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Diffstat (limited to 'crypto/openssl/CHANGES')
| -rw-r--r-- | crypto/openssl/CHANGES | 13784 |
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diff --git a/crypto/openssl/CHANGES b/crypto/openssl/CHANGES deleted file mode 100644 index 647aebd0bd22..000000000000 --- a/crypto/openssl/CHANGES +++ /dev/null @@ -1,13784 +0,0 @@ - - OpenSSL CHANGES - _______________ - - This is a high-level summary of the most important changes. - For a full list of changes, see the git commit log; for example, - https://github.com/openssl/openssl/commits/ and pick the appropriate - release branch. - - Changes between 1.1.1p and 1.1.1q [5 Jul 2022] - - *) AES OCB mode for 32-bit x86 platforms using the AES-NI assembly optimised - implementation would not encrypt the entirety of the data under some - circumstances. This could reveal sixteen bytes of data that was - preexisting in the memory that wasn't written. In the special case of - "in place" encryption, sixteen bytes of the plaintext would be revealed. - - Since OpenSSL does not support OCB based cipher suites for TLS and DTLS, - they are both unaffected. - (CVE-2022-2097) - [Alex Chernyakhovsky, David Benjamin, Alejandro Sedeño] - - Changes between 1.1.1o and 1.1.1p [21 Jun 2022] - - *) In addition to the c_rehash shell command injection identified in - CVE-2022-1292, further bugs where the c_rehash script does not - properly sanitise shell metacharacters to prevent command injection have been - fixed. - - When the CVE-2022-1292 was fixed it was not discovered that there - are other places in the script where the file names of certificates - being hashed were possibly passed to a command executed through the shell. - - This script is distributed by some operating systems in a manner where - it is automatically executed. On such operating systems, an attacker - could execute arbitrary commands with the privileges of the script. - - Use of the c_rehash script is considered obsolete and should be replaced - by the OpenSSL rehash command line tool. - (CVE-2022-2068) - [Daniel Fiala, Tomáš Mráz] - - *) When OpenSSL TLS client is connecting without any supported elliptic - curves and TLS-1.3 protocol is disabled the connection will no longer fail - if a ciphersuite that does not use a key exchange based on elliptic - curves can be negotiated. - [Tomáš Mráz] - - Changes between 1.1.1n and 1.1.1o [3 May 2022] - - *) Fixed a bug in the c_rehash script which was not properly sanitising shell - metacharacters to prevent command injection. This script is distributed - by some operating systems in a manner where it is automatically executed. - On such operating systems, an attacker could execute arbitrary commands - with the privileges of the script. - - Use of the c_rehash script is considered obsolete and should be replaced - by the OpenSSL rehash command line tool. - (CVE-2022-1292) - [Tomáš Mráz] - - Changes between 1.1.1m and 1.1.1n [15 Mar 2022] - - *) Fixed a bug in the BN_mod_sqrt() function that can cause it to loop forever - for non-prime moduli. - - Internally this function is used when parsing certificates that contain - elliptic curve public keys in compressed form or explicit elliptic curve - parameters with a base point encoded in compressed form. - - It is possible to trigger the infinite loop by crafting a certificate that - has invalid explicit curve parameters. - - Since certificate parsing happens prior to verification of the certificate - signature, any process that parses an externally supplied certificate may - thus be subject to a denial of service attack. The infinite loop can also - be reached when parsing crafted private keys as they can contain explicit - elliptic curve parameters. - - Thus vulnerable situations include: - - - TLS clients consuming server certificates - - TLS servers consuming client certificates - - Hosting providers taking certificates or private keys from customers - - Certificate authorities parsing certification requests from subscribers - - Anything else which parses ASN.1 elliptic curve parameters - - Also any other applications that use the BN_mod_sqrt() where the attacker - can control the parameter values are vulnerable to this DoS issue. - (CVE-2022-0778) - [Tomáš Mráz] - - *) Add ciphersuites based on DHE_PSK (RFC 4279) and ECDHE_PSK (RFC 5489) - to the list of ciphersuites providing Perfect Forward Secrecy as - required by SECLEVEL >= 3. - - [Dmitry Belyavskiy, Nicola Tuveri] - - Changes between 1.1.1l and 1.1.1m [14 Dec 2021] - - *) Avoid loading of a dynamic engine twice. - - [Bernd Edlinger] - - *) Fixed building on Debian with kfreebsd kernels - - [Mattias Ellert] - - *) Prioritise DANE TLSA issuer certs over peer certs - - [Viktor Dukhovni] - - *) Fixed random API for MacOS prior to 10.12 - - These MacOS versions don't support the CommonCrypto APIs - - [Lenny Primak] - - Changes between 1.1.1k and 1.1.1l [24 Aug 2021] - - *) Fixed an SM2 Decryption Buffer Overflow. - - In order to decrypt SM2 encrypted data an application is expected to call the - API function EVP_PKEY_decrypt(). Typically an application will call this - function twice. The first time, on entry, the "out" parameter can be NULL and, - on exit, the "outlen" parameter is populated with the buffer size required to - hold the decrypted plaintext. The application can then allocate a sufficiently - sized buffer and call EVP_PKEY_decrypt() again, but this time passing a non-NULL - value for the "out" parameter. - - A bug in the implementation of the SM2 decryption code means that the - calculation of the buffer size required to hold the plaintext returned by the - first call to EVP_PKEY_decrypt() can be smaller than the actual size required by - the second call. This can lead to a buffer overflow when EVP_PKEY_decrypt() is - called by the application a second time with a buffer that is too small. - - A malicious attacker who is able present SM2 content for decryption to an - application could cause attacker chosen data to overflow the buffer by up to a - maximum of 62 bytes altering the contents of other data held after the - buffer, possibly changing application behaviour or causing the application to - crash. The location of the buffer is application dependent but is typically - heap allocated. - (CVE-2021-3711) - [Matt Caswell] - - *) Fixed various read buffer overruns processing ASN.1 strings - - ASN.1 strings are represented internally within OpenSSL as an ASN1_STRING - structure which contains a buffer holding the string data and a field holding - the buffer length. This contrasts with normal C strings which are repesented as - a buffer for the string data which is terminated with a NUL (0) byte. - - Although not a strict requirement, ASN.1 strings that are parsed using OpenSSL's - own "d2i" functions (and other similar parsing functions) as well as any string - whose value has been set with the ASN1_STRING_set() function will additionally - NUL terminate the byte array in the ASN1_STRING structure. - - However, it is possible for applications to directly construct valid ASN1_STRING - structures which do not NUL terminate the byte array by directly setting the - "data" and "length" fields in the ASN1_STRING array. This can also happen by - using the ASN1_STRING_set0() function. - - Numerous OpenSSL functions that print ASN.1 data have been found to assume that - the ASN1_STRING byte array will be NUL terminated, even though this is not - guaranteed for strings that have been directly constructed. Where an application - requests an ASN.1 structure to be printed, and where that ASN.1 structure - contains ASN1_STRINGs that have been directly constructed by the application - without NUL terminating the "data" field, then a read buffer overrun can occur. - - The same thing can also occur during name constraints processing of certificates - (for example if a certificate has been directly constructed by the application - instead of loading it via the OpenSSL parsing functions, and the certificate - contains non NUL terminated ASN1_STRING structures). It can also occur in the - X509_get1_email(), X509_REQ_get1_email() and X509_get1_ocsp() functions. - - If a malicious actor can cause an application to directly construct an - ASN1_STRING and then process it through one of the affected OpenSSL functions - then this issue could be hit. This might result in a crash (causing a Denial of - Service attack). It could also result in the disclosure of private memory - contents (such as private keys, or sensitive plaintext). - (CVE-2021-3712) - [Matt Caswell] - - Changes between 1.1.1j and 1.1.1k [25 Mar 2021] - - *) Fixed a problem with verifying a certificate chain when using the - X509_V_FLAG_X509_STRICT flag. This flag enables additional security checks - of the certificates present in a certificate chain. It is not set by - default. - - Starting from OpenSSL version 1.1.1h a check to disallow certificates in - the chain that have explicitly encoded elliptic curve parameters was added - as an additional strict check. - - An error in the implementation of this check meant that the result of a - previous check to confirm that certificates in the chain are valid CA - certificates was overwritten. This effectively bypasses the check - that non-CA certificates must not be able to issue other certificates. - - If a "purpose" has been configured then there is a subsequent opportunity - for checks that the certificate is a valid CA. All of the named "purpose" - values implemented in libcrypto perform this check. Therefore, where - a purpose is set the certificate chain will still be rejected even when the - strict flag has been used. A purpose is set by default in libssl client and - server certificate verification routines, but it can be overridden or - removed by an application. - - In order to be affected, an application must explicitly set the - X509_V_FLAG_X509_STRICT verification flag and either not set a purpose - for the certificate verification or, in the case of TLS client or server - applications, override the default purpose. - (CVE-2021-3450) - [Tomáš Mráz] - - *) Fixed an issue where an OpenSSL TLS server may crash if sent a maliciously - crafted renegotiation ClientHello message from a client. If a TLSv1.2 - renegotiation ClientHello omits the signature_algorithms extension (where - it was present in the initial ClientHello), but includes a - signature_algorithms_cert extension then a NULL pointer dereference will - result, leading to a crash and a denial of service attack. - - A server is only vulnerable if it has TLSv1.2 and renegotiation enabled - (which is the default configuration). OpenSSL TLS clients are not impacted - by this issue. - (CVE-2021-3449) - [Peter Kästle and Samuel Sapalski] - - Changes between 1.1.1i and 1.1.1j [16 Feb 2021] - - *) Fixed the X509_issuer_and_serial_hash() function. It attempts to - create a unique hash value based on the issuer and serial number data - contained within an X509 certificate. However it was failing to correctly - handle any errors that may occur while parsing the issuer field (which might - occur if the issuer field is maliciously constructed). This may subsequently - result in a NULL pointer deref and a crash leading to a potential denial of - service attack. - (CVE-2021-23841) - [Matt Caswell] - - *) Fixed the RSA_padding_check_SSLv23() function and the RSA_SSLV23_PADDING - padding mode to correctly check for rollback attacks. This is considered a - bug in OpenSSL 1.1.1 because it does not support SSLv2. In 1.0.2 this is - CVE-2021-23839. - [Matt Caswell] - - *) Fixed the EVP_CipherUpdate, EVP_EncryptUpdate and EVP_DecryptUpdate - functions. Previously they could overflow the output length argument in some - cases where the input length is close to the maximum permissable length for - an integer on the platform. In such cases the return value from the function - call would be 1 (indicating success), but the output length value would be - negative. This could cause applications to behave incorrectly or crash. - (CVE-2021-23840) - [Matt Caswell] - - *) Fixed SRP_Calc_client_key so that it runs in constant time. The previous - implementation called BN_mod_exp without setting BN_FLG_CONSTTIME. This - could be exploited in a side channel attack to recover the password. Since - the attack is local host only this is outside of the current OpenSSL - threat model and therefore no CVE is assigned. - - Thanks to Mohammed Sabt and Daniel De Almeida Braga for reporting this - issue. - [Matt Caswell] - - Changes between 1.1.1h and 1.1.1i [8 Dec 2020] - - *) Fixed NULL pointer deref in the GENERAL_NAME_cmp function - This function could crash if both GENERAL_NAMEs contain an EDIPARTYNAME. - If an attacker can control both items being compared then this could lead - to a possible denial of service attack. OpenSSL itself uses the - GENERAL_NAME_cmp function for two purposes: - 1) Comparing CRL distribution point names between an available CRL and a - CRL distribution point embedded in an X509 certificate - 2) When verifying that a timestamp response token signer matches the - timestamp authority name (exposed via the API functions - TS_RESP_verify_response and TS_RESP_verify_token) - (CVE-2020-1971) - [Matt Caswell] - - *) Add support for Apple Silicon M1 Macs with the darwin64-arm64-cc target. - [Stuart Carnie] - - *) The security callback, which can be customised by application code, supports - the security operation SSL_SECOP_TMP_DH. This is defined to take an EVP_PKEY - in the "other" parameter. In most places this is what is passed. All these - places occur server side. However there was one client side call of this - security operation and it passed a DH object instead. This is incorrect - according to the definition of SSL_SECOP_TMP_DH, and is inconsistent with all - of the other locations. Therefore this client side call has been changed to - pass an EVP_PKEY instead. - [Matt Caswell] - - *) In 1.1.1h, an expired trusted (root) certificate was not anymore rejected - when validating a certificate path. This check is restored in 1.1.1i. - [David von Oheimb] - - Changes between 1.1.1g and 1.1.1h [22 Sep 2020] - - *) Certificates with explicit curve parameters are now disallowed in - verification chains if the X509_V_FLAG_X509_STRICT flag is used. - [Tomas Mraz] - - *) The 'MinProtocol' and 'MaxProtocol' configuration commands now silently - ignore TLS protocol version bounds when configuring DTLS-based contexts, and - conversely, silently ignore DTLS protocol version bounds when configuring - TLS-based contexts. The commands can be repeated to set bounds of both - types. The same applies with the corresponding "min_protocol" and - "max_protocol" command-line switches, in case some application uses both TLS - and DTLS. - - SSL_CTX instances that are created for a fixed protocol version (e.g. - TLSv1_server_method()) also silently ignore version bounds. Previously - attempts to apply bounds to these protocol versions would result in an - error. Now only the "version-flexible" SSL_CTX instances are subject to - limits in configuration files in command-line options. - [Viktor Dukhovni] - - *) Handshake now fails if Extended Master Secret extension is dropped - on renegotiation. - [Tomas Mraz] - - *) Accidentally, an expired trusted (root) certificate is not anymore rejected - when validating a certificate path. - [David von Oheimb] - - *) The Oracle Developer Studio compiler will start reporting deprecated APIs - - Changes between 1.1.1f and 1.1.1g [21 Apr 2020] - - *) Fixed segmentation fault in SSL_check_chain() - Server or client applications that call the SSL_check_chain() function - during or after a TLS 1.3 handshake may crash due to a NULL pointer - dereference as a result of incorrect handling of the - "signature_algorithms_cert" TLS extension. The crash occurs if an invalid - or unrecognised signature algorithm is received from the peer. This could - be exploited by a malicious peer in a Denial of Service attack. - (CVE-2020-1967) - [Benjamin Kaduk] - - *) Added AES consttime code for no-asm configurations - an optional constant time support for AES was added - when building openssl for no-asm. - Enable with: ./config no-asm -DOPENSSL_AES_CONST_TIME - Disable with: ./config no-asm -DOPENSSL_NO_AES_CONST_TIME - At this time this feature is by default disabled. - It will be enabled by default in 3.0. - [Bernd Edlinger] - - Changes between 1.1.1e and 1.1.1f [31 Mar 2020] - - *) Revert the change of EOF detection while reading in libssl to avoid - regressions in applications depending on the current way of reporting - the EOF. As the existing method is not fully accurate the change to - reporting the EOF via SSL_ERROR_SSL is kept on the current development - branch and will be present in the 3.0 release. - [Tomas Mraz] - - *) Revised BN_generate_prime_ex to not avoid factors 3..17863 in p-1 - when primes for RSA keys are computed. - Since we previously always generated primes == 2 (mod 3) for RSA keys, - the 2-prime and 3-prime RSA modules were easy to distinguish, since - N = p*q = 1 (mod 3), but N = p*q*r = 2 (mod 3). Therefore fingerprinting - 2-prime vs. 3-prime RSA keys was possible by computing N mod 3. - This avoids possible fingerprinting of newly generated RSA modules. - [Bernd Edlinger] - - Changes between 1.1.1d and 1.1.1e [17 Mar 2020] - *) Properly detect EOF while reading in libssl. Previously if we hit an EOF - while reading in libssl then we would report an error back to the - application (SSL_ERROR_SYSCALL) but errno would be 0. We now add - an error to the stack (which means we instead return SSL_ERROR_SSL) and - therefore give a hint as to what went wrong. - [Matt Caswell] - - *) Check that ed25519 and ed448 are allowed by the security level. Previously - signature algorithms not using an MD were not being checked that they were - allowed by the security level. - [Kurt Roeckx] - - *) Fixed SSL_get_servername() behaviour. The behaviour of SSL_get_servername() - was not quite right. The behaviour was not consistent between resumption - and normal handshakes, and also not quite consistent with historical - behaviour. The behaviour in various scenarios has been clarified and - it has been updated to make it match historical behaviour as closely as - possible. - [Matt Caswell] - - *) [VMS only] The header files that the VMS compilers include automatically, - __DECC_INCLUDE_PROLOGUE.H and __DECC_INCLUDE_EPILOGUE.H, use pragmas that - the C++ compiler doesn't understand. This is a shortcoming in the - compiler, but can be worked around with __cplusplus guards. - - C++ applications that use OpenSSL libraries must be compiled using the - qualifier '/NAMES=(AS_IS,SHORTENED)' to be able to use all the OpenSSL - functions. Otherwise, only functions with symbols of less than 31 - characters can be used, as the linker will not be able to successfully - resolve symbols with longer names. - [Richard Levitte] - - *) Corrected the documentation of the return values from the EVP_DigestSign* - set of functions. The documentation mentioned negative values for some - errors, but this was never the case, so the mention of negative values - was removed. - - Code that followed the documentation and thereby check with something - like 'EVP_DigestSignInit(...) <= 0' will continue to work undisturbed. - [Richard Levitte] - - *) Fixed an an overflow bug in the x64_64 Montgomery squaring procedure - used in exponentiation with 512-bit moduli. No EC algorithms are - affected. Analysis suggests that attacks against 2-prime RSA1024, - 3-prime RSA1536, and DSA1024 as a result of this defect would be very - difficult to perform and are not believed likely. Attacks against DH512 - are considered just feasible. However, for an attack the target would - have to re-use the DH512 private key, which is not recommended anyway. - Also applications directly using the low level API BN_mod_exp may be - affected if they use BN_FLG_CONSTTIME. - (CVE-2019-1551) - [Andy Polyakov] - - *) Added a new method to gather entropy on VMS, based on SYS$GET_ENTROPY. - The presence of this system service is determined at run-time. - [Richard Levitte] - - *) Added newline escaping functionality to a filename when using openssl dgst. - This output format is to replicate the output format found in the '*sum' - checksum programs. This aims to preserve backward compatibility. - [Matt Eaton, Richard Levitte, and Paul Dale] - - *) Print all values for a PKCS#12 attribute with 'openssl pkcs12', not just - the first value. - [Jon Spillett] - - Changes between 1.1.1c and 1.1.1d [10 Sep 2019] - - *) Fixed a fork protection issue. OpenSSL 1.1.1 introduced a rewritten random - number generator (RNG). This was intended to include protection in the - event of a fork() system call in order to ensure that the parent and child - processes did not share the same RNG state. However this protection was not - being used in the default case. - - A partial mitigation for this issue is that the output from a high - precision timer is mixed into the RNG state so the likelihood of a parent - and child process sharing state is significantly reduced. - - If an application already calls OPENSSL_init_crypto() explicitly using - OPENSSL_INIT_ATFORK then this problem does not occur at all. - (CVE-2019-1549) - [Matthias St. Pierre] - - *) For built-in EC curves, ensure an EC_GROUP built from the curve name is - used even when parsing explicit parameters, when loading a serialized key - or calling `EC_GROUP_new_from_ecpkparameters()`/ - `EC_GROUP_new_from_ecparameters()`. - This prevents bypass of security hardening and performance gains, - especially for curves with specialized EC_METHODs. - By default, if a key encoded with explicit parameters is loaded and later - serialized, the output is still encoded with explicit parameters, even if - internally a "named" EC_GROUP is used for computation. - [Nicola Tuveri] - - *) Compute ECC cofactors if not provided during EC_GROUP construction. Before - this change, EC_GROUP_set_generator would accept order and/or cofactor as - NULL. After this change, only the cofactor parameter can be NULL. It also - does some minimal sanity checks on the passed order. - (CVE-2019-1547) - [Billy Bob Brumley] - - *) Fixed a padding oracle in PKCS7_dataDecode and CMS_decrypt_set1_pkey. - An attack is simple, if the first CMS_recipientInfo is valid but the - second CMS_recipientInfo is chosen ciphertext. If the second - recipientInfo decodes to PKCS #1 v1.5 form plaintext, the correct - encryption key will be replaced by garbage, and the message cannot be - decoded, but if the RSA decryption fails, the correct encryption key is - used and the recipient will not notice the attack. - As a work around for this potential attack the length of the decrypted - key must be equal to the cipher default key length, in case the - certifiate is not given and all recipientInfo are tried out. - The old behaviour can be re-enabled in the CMS code by setting the - CMS_DEBUG_DECRYPT flag. - (CVE-2019-1563) - [Bernd Edlinger] - - *) Early start up entropy quality from the DEVRANDOM seed source has been - improved for older Linux systems. The RAND subsystem will wait for - /dev/random to be producing output before seeding from /dev/urandom. - The seeded state is stored for future library initialisations using - a system global shared memory segment. The shared memory identifier - can be configured by defining OPENSSL_RAND_SEED_DEVRANDOM_SHM_ID to - the desired value. The default identifier is 114. - [Paul Dale] - - *) Correct the extended master secret constant on EBCDIC systems. Without this - fix TLS connections between an EBCDIC system and a non-EBCDIC system that - negotiate EMS will fail. Unfortunately this also means that TLS connections - between EBCDIC systems with this fix, and EBCDIC systems without this - fix will fail if they negotiate EMS. - [Matt Caswell] - - *) Use Windows installation paths in the mingw builds - - Mingw isn't a POSIX environment per se, which means that Windows - paths should be used for installation. - (CVE-2019-1552) - [Richard Levitte] - - *) Changed DH_check to accept parameters with order q and 2q subgroups. - With order 2q subgroups the bit 0 of the private key is not secret - but DH_generate_key works around that by clearing bit 0 of the - private key for those. This avoids leaking bit 0 of the private key. - [Bernd Edlinger] - - *) Significantly reduce secure memory usage by the randomness pools. - [Paul Dale] - - *) Revert the DEVRANDOM_WAIT feature for Linux systems - - The DEVRANDOM_WAIT feature added a select() call to wait for the - /dev/random device to become readable before reading from the - /dev/urandom device. - - It turned out that this change had negative side effects on - performance which were not acceptable. After some discussion it - was decided to revert this feature and leave it up to the OS - resp. the platform maintainer to ensure a proper initialization - during early boot time. - [Matthias St. Pierre] - - Changes between 1.1.1b and 1.1.1c [28 May 2019] - - *) Add build tests for C++. These are generated files that only do one - thing, to include one public OpenSSL head file each. This tests that - the public header files can be usefully included in a C++ application. - - This test isn't enabled by default. It can be enabled with the option - 'enable-buildtest-c++'. - [Richard Levitte] - - *) Enable SHA3 pre-hashing for ECDSA and DSA. - [Patrick Steuer] - - *) Change the default RSA, DSA and DH size to 2048 bit instead of 1024. - This changes the size when using the genpkey app when no size is given. It - fixes an omission in earlier changes that changed all RSA, DSA and DH - generation apps to use 2048 bits by default. - [Kurt Roeckx] - - *) Reorganize the manual pages to consistently have RETURN VALUES, - EXAMPLES, SEE ALSO and HISTORY come in that order, and adjust - util/fix-doc-nits accordingly. - [Paul Yang, Joshua Lock] - - *) Add the missing accessor EVP_PKEY_get0_engine() - [Matt Caswell] - - *) Have apps like 's_client' and 's_server' output the signature scheme - along with other cipher suite parameters when debugging. - [Lorinczy Zsigmond] - - *) Make OPENSSL_config() error agnostic again. - [Richard Levitte] - - *) Do the error handling in RSA decryption constant time. - [Bernd Edlinger] - - *) Prevent over long nonces in ChaCha20-Poly1305. - - ChaCha20-Poly1305 is an AEAD cipher, and requires a unique nonce input - for every encryption operation. RFC 7539 specifies that the nonce value - (IV) should be 96 bits (12 bytes). OpenSSL allows a variable nonce length - and front pads the nonce with 0 bytes if it is less than 12 - bytes. However it also incorrectly allows a nonce to be set of up to 16 - bytes. In this case only the last 12 bytes are significant and any - additional leading bytes are ignored. - - It is a requirement of using this cipher that nonce values are - unique. Messages encrypted using a reused nonce value are susceptible to - serious confidentiality and integrity attacks. If an application changes - the default nonce length to be longer than 12 bytes and then makes a - change to the leading bytes of the nonce expecting the new value to be a - new unique nonce then such an application could inadvertently encrypt - messages with a reused nonce. - - Additionally the ignored bytes in a long nonce are not covered by the - integrity guarantee of this cipher. Any application that relies on the - integrity of these ignored leading bytes of a long nonce may be further - affected. Any OpenSSL internal use of this cipher, including in SSL/TLS, - is safe because no such use sets such a long nonce value. However user - applications that use this cipher directly and set a non-default nonce - length to be longer than 12 bytes may be vulnerable. - - This issue was reported to OpenSSL on 16th of March 2019 by Joran Dirk - Greef of Ronomon. - (CVE-2019-1543) - [Matt Caswell] - - *) Add DEVRANDOM_WAIT feature for Linux systems - - On older Linux systems where the getrandom() system call is not available, - OpenSSL normally uses the /dev/urandom device for seeding its CSPRNG. - Contrary to getrandom(), the /dev/urandom device will not block during - early boot when the kernel CSPRNG has not been seeded yet. - - To mitigate this known weakness, use select() to wait for /dev/random to - become readable before reading from /dev/urandom. - - *) Ensure that SM2 only uses SM3 as digest algorithm - [Paul Yang] - - Changes between 1.1.1a and 1.1.1b [26 Feb 2019] - - *) Added SCA hardening for modular field inversion in EC_GROUP through - a new dedicated field_inv() pointer in EC_METHOD. - This also addresses a leakage affecting conversions from projective - to affine coordinates. - [Billy Bob Brumley, Nicola Tuveri] - - *) Change the info callback signals for the start and end of a post-handshake - message exchange in TLSv1.3. In 1.1.1/1.1.1a we used SSL_CB_HANDSHAKE_START - and SSL_CB_HANDSHAKE_DONE. Experience has shown that many applications get - confused by this and assume that a TLSv1.2 renegotiation has started. This - can break KeyUpdate handling. Instead we no longer signal the start and end - of a post handshake message exchange (although the messages themselves are - still signalled). This could break some applications that were expecting - the old signals. However without this KeyUpdate is not usable for many - applications. - [Matt Caswell] - - *) Fix a bug in the computation of the endpoint-pair shared secret used - by DTLS over SCTP. This breaks interoperability with older versions - of OpenSSL like OpenSSL 1.1.0 and OpenSSL 1.0.2. There is a runtime - switch SSL_MODE_DTLS_SCTP_LABEL_LENGTH_BUG (off by default) enabling - interoperability with such broken implementations. However, enabling - this switch breaks interoperability with correct implementations. - - *) Fix a use after free bug in d2i_X509_PUBKEY when overwriting a - re-used X509_PUBKEY object if the second PUBKEY is malformed. - [Bernd Edlinger] - - *) Move strictness check from EVP_PKEY_asn1_new() to EVP_PKEY_asn1_add0(). - [Richard Levitte] - - *) Remove the 'dist' target and add a tarball building script. The - 'dist' target has fallen out of use, and it shouldn't be - necessary to configure just to create a source distribution. - [Richard Levitte] - - *) Added support for Linux Kernel TLS data-path. The Linux Kernel data-path - improves application performance by removing data copies and providing - applications with zero-copy system calls such as sendfile and splice. - [Boris Pismenny] - - Changes between 1.1.1 and 1.1.1a [20 Nov 2018] - - *) Timing vulnerability in DSA signature generation - - The OpenSSL DSA signature algorithm has been shown to be vulnerable to a - timing side channel attack. An attacker could use variations in the signing - algorithm to recover the private key. - - This issue was reported to OpenSSL on 16th October 2018 by Samuel Weiser. - (CVE-2018-0734) - [Paul Dale] - - *) Timing vulnerability in ECDSA signature generation - - The OpenSSL ECDSA signature algorithm has been shown to be vulnerable to a - timing side channel attack. An attacker could use variations in the signing - algorithm to recover the private key. - - This issue was reported to OpenSSL on 25th October 2018 by Samuel Weiser. - (CVE-2018-0735) - [Paul Dale] - - *) Added EVP_PKEY_ECDH_KDF_X9_63 and ecdh_KDF_X9_63() as replacements for - the EVP_PKEY_ECDH_KDF_X9_62 KDF type and ECDH_KDF_X9_62(). The old names - are retained for backwards compatibility. - [Antoine Salon] - - *) Fixed the issue that RAND_add()/RAND_seed() silently discards random input - if its length exceeds 4096 bytes. The limit has been raised to a buffer size - of two gigabytes and the error handling improved. - - This issue was reported to OpenSSL by Dr. Falko Strenzke. It has been - categorized as a normal bug, not a security issue, because the DRBG reseeds - automatically and is fully functional even without additional randomness - provided by the application. - - Changes between 1.1.0i and 1.1.1 [11 Sep 2018] - - *) Add a new ClientHello callback. Provides a callback interface that gives - the application the ability to adjust the nascent SSL object at the - earliest stage of ClientHello processing, immediately after extensions have - been collected but before they have been processed. In particular, this - callback can adjust the supported TLS versions in response to the contents - of the ClientHello - [Benjamin Kaduk] - - *) Add SM2 base algorithm support. - [Jack Lloyd] - - *) s390x assembly pack: add (improved) hardware-support for the following - cryptographic primitives: sha3, shake, aes-gcm, aes-ccm, aes-ctr, aes-ofb, - aes-cfb/cfb8, aes-ecb. - [Patrick Steuer] - - *) Make EVP_PKEY_asn1_new() a bit stricter about its input. A NULL pem_str - parameter is no longer accepted, as it leads to a corrupt table. NULL - pem_str is reserved for alias entries only. - [Richard Levitte] - - *) Use the new ec_scalar_mul_ladder scaffold to implement a specialized ladder - step for prime curves. The new implementation is based on formulae from - differential addition-and-doubling in homogeneous projective coordinates - from Izu-Takagi "A fast parallel elliptic curve multiplication resistant - against side channel attacks" and Brier-Joye "Weierstrass Elliptic Curves - and Side-Channel Attacks" Eq. (8) for y-coordinate recovery, modified - to work in projective coordinates. - [Billy Bob Brumley, Nicola Tuveri] - - *) Change generating and checking of primes so that the error rate of not - being prime depends on the intended use based on the size of the input. - For larger primes this will result in more rounds of Miller-Rabin. - The maximal error rate for primes with more than 1080 bits is lowered - to 2^-128. - [Kurt Roeckx, Annie Yousar] - - *) Increase the number of Miller-Rabin rounds for DSA key generating to 64. - [Kurt Roeckx] - - *) The 'tsget' script is renamed to 'tsget.pl', to avoid confusion when - moving between systems, and to avoid confusion when a Windows build is - done with mingw vs with MSVC. For POSIX installs, there's still a - symlink or copy named 'tsget' to avoid that confusion as well. - [Richard Levitte] - - *) Revert blinding in ECDSA sign and instead make problematic addition - length-invariant. Switch even to fixed-length Montgomery multiplication. - [Andy Polyakov] - - *) Use the new ec_scalar_mul_ladder scaffold to implement a specialized ladder - step for binary curves. The new implementation is based on formulae from - differential addition-and-doubling in mixed Lopez-Dahab projective - coordinates, modified to independently blind the operands. - [Billy Bob Brumley, Sohaib ul Hassan, Nicola Tuveri] - - *) Add a scaffold to optionally enhance the Montgomery ladder implementation - for `ec_scalar_mul_ladder` (formerly `ec_mul_consttime`) allowing - EC_METHODs to implement their own specialized "ladder step", to take - advantage of more favorable coordinate systems or more efficient - differential addition-and-doubling algorithms. - [Billy Bob Brumley, Sohaib ul Hassan, Nicola Tuveri] - - *) Modified the random device based seed sources to keep the relevant - file descriptors open rather than reopening them on each access. - This allows such sources to operate in a chroot() jail without - the associated device nodes being available. This behaviour can be - controlled using RAND_keep_random_devices_open(). - [Paul Dale] - - *) Numerous side-channel attack mitigations have been applied. This may have - performance impacts for some algorithms for the benefit of improved - security. Specific changes are noted in this change log by their respective - authors. - [Matt Caswell] - - *) AIX shared library support overhaul. Switch to AIX "natural" way of - handling shared libraries, which means collecting shared objects of - different versions and bitnesses in one common archive. This allows to - mitigate conflict between 1.0 and 1.1 side-by-side installations. It - doesn't affect the way 3rd party applications are linked, only how - multi-version installation is managed. - [Andy Polyakov] - - *) Make ec_group_do_inverse_ord() more robust and available to other - EC cryptosystems, so that irrespective of BN_FLG_CONSTTIME, SCA - mitigations are applied to the fallback BN_mod_inverse(). - When using this function rather than BN_mod_inverse() directly, new - EC cryptosystem implementations are then safer-by-default. - [Billy Bob Brumley] - - *) Add coordinate blinding for EC_POINT and implement projective - coordinate blinding for generic prime curves as a countermeasure to - chosen point SCA attacks. - [Sohaib ul Hassan, Nicola Tuveri, Billy Bob Brumley] - - *) Add blinding to ECDSA and DSA signatures to protect against side channel - attacks discovered by Keegan Ryan (NCC Group). - [Matt Caswell] - - *) Enforce checking in the pkeyutl command line app to ensure that the input - length does not exceed the maximum supported digest length when performing - a sign, verify or verifyrecover operation. - [Matt Caswell] - - *) SSL_MODE_AUTO_RETRY is enabled by default. Applications that use blocking - I/O in combination with something like select() or poll() will hang. This - can be turned off again using SSL_CTX_clear_mode(). - Many applications do not properly handle non-application data records, and - TLS 1.3 sends more of such records. Setting SSL_MODE_AUTO_RETRY works - around the problems in those applications, but can also break some. - It's recommended to read the manpages about SSL_read(), SSL_write(), - SSL_get_error(), SSL_shutdown(), SSL_CTX_set_mode() and - SSL_CTX_set_read_ahead() again. - [Kurt Roeckx] - - *) When unlocking a pass phrase protected PEM file or PKCS#8 container, we - now allow empty (zero character) pass phrases. - [Richard Levitte] - - *) Apply blinding to binary field modular inversion and remove patent - pending (OPENSSL_SUN_GF2M_DIV) BN_GF2m_mod_div implementation. - [Billy Bob Brumley] - - *) Deprecate ec2_mult.c and unify scalar multiplication code paths for - binary and prime elliptic curves. - [Billy Bob Brumley] - - *) Remove ECDSA nonce padding: EC_POINT_mul is now responsible for - constant time fixed point multiplication. - [Billy Bob Brumley] - - *) Revise elliptic curve scalar multiplication with timing attack - defenses: ec_wNAF_mul redirects to a constant time implementation - when computing fixed point and variable point multiplication (which - in OpenSSL are mostly used with secret scalars in keygen, sign, - ECDH derive operations). - [Billy Bob Brumley, Nicola Tuveri, Cesar Pereida García, - Sohaib ul Hassan] - - *) Updated CONTRIBUTING - [Rich Salz] - - *) Updated DRBG / RAND to request nonce and additional low entropy - randomness from the system. - [Matthias St. Pierre] - - *) Updated 'openssl rehash' to use OpenSSL consistent default. - [Richard Levitte] - - *) Moved the load of the ssl_conf module to libcrypto, which helps - loading engines that libssl uses before libssl is initialised. - [Matt Caswell] - - *) Added EVP_PKEY_sign() and EVP_PKEY_verify() for EdDSA - [Matt Caswell] - - *) Fixed X509_NAME_ENTRY_set to get multi-valued RDNs right in all cases. - [Ingo Schwarze, Rich Salz] - - *) Added output of accepting IP address and port for 'openssl s_server' - [Richard Levitte] - - *) Added a new API for TLSv1.3 ciphersuites: - SSL_CTX_set_ciphersuites() - SSL_set_ciphersuites() - [Matt Caswell] - - *) Memory allocation failures consistently add an error to the error - stack. - [Rich Salz] - - *) Don't use OPENSSL_ENGINES and OPENSSL_CONF environment values - in libcrypto when run as setuid/setgid. - [Bernd Edlinger] - - *) Load any config file by default when libssl is used. - [Matt Caswell] - - *) Added new public header file <openssl/rand_drbg.h> and documentation - for the RAND_DRBG API. See manual page RAND_DRBG(7) for an overview. - [Matthias St. Pierre] - - *) QNX support removed (cannot find contributors to get their approval - for the license change). - [Rich Salz] - - *) TLSv1.3 replay protection for early data has been implemented. See the - SSL_read_early_data() man page for further details. - [Matt Caswell] - - *) Separated TLSv1.3 ciphersuite configuration out from TLSv1.2 ciphersuite - configuration. TLSv1.3 ciphersuites are not compatible with TLSv1.2 and - below. Similarly TLSv1.2 ciphersuites are not compatible with TLSv1.3. - In order to avoid issues where legacy TLSv1.2 ciphersuite configuration - would otherwise inadvertently disable all TLSv1.3 ciphersuites the - configuration has been separated out. See the ciphers man page or the - SSL_CTX_set_ciphersuites() man page for more information. - [Matt Caswell] - - *) On POSIX (BSD, Linux, ...) systems the ocsp(1) command running - in responder mode now supports the new "-multi" option, which - spawns the specified number of child processes to handle OCSP - requests. The "-timeout" option now also limits the OCSP - responder's patience to wait to receive the full client request - on a newly accepted connection. Child processes are respawned - as needed, and the CA index file is automatically reloaded - when changed. This makes it possible to run the "ocsp" responder - as a long-running service, making the OpenSSL CA somewhat more - feature-complete. In this mode, most diagnostic messages logged - after entering the event loop are logged via syslog(3) rather than - written to stderr. - [Viktor Dukhovni] - - *) Added support for X448 and Ed448. Heavily based on original work by - Mike Hamburg. - [Matt Caswell] - - *) Extend OSSL_STORE with capabilities to search and to narrow the set of - objects loaded. This adds the functions OSSL_STORE_expect() and - OSSL_STORE_find() as well as needed tools to construct searches and - get the search data out of them. - [Richard Levitte] - - *) Support for TLSv1.3 added. Note that users upgrading from an earlier - version of OpenSSL should review their configuration settings to ensure - that they are still appropriate for TLSv1.3. For further information see: - https://wiki.openssl.org/index.php/TLS1.3 - [Matt Caswell] - - *) Grand redesign of the OpenSSL random generator - - The default RAND method now utilizes an AES-CTR DRBG according to - NIST standard SP 800-90Ar1. The new random generator is essentially - a port of the default random generator from the OpenSSL FIPS 2.0 - object module. It is a hybrid deterministic random bit generator - using an AES-CTR bit stream and which seeds and reseeds itself - automatically using trusted system entropy sources. - - Some of its new features are: - o Support for multiple DRBG instances with seed chaining. - o The default RAND method makes use of a DRBG. - o There is a public and private DRBG instance. - o The DRBG instances are fork-safe. - o Keep all global DRBG instances on the secure heap if it is enabled. - o The public and private DRBG instance are per thread for lock free - operation - [Paul Dale, Benjamin Kaduk, Kurt Roeckx, Rich Salz, Matthias St. Pierre] - - *) Changed Configure so it only says what it does and doesn't dump - so much data. Instead, ./configdata.pm should be used as a script - to display all sorts of configuration data. - [Richard Levitte] - - *) Added processing of "make variables" to Configure. - [Richard Levitte] - - *) Added SHA512/224 and SHA512/256 algorithm support. - [Paul Dale] - - *) The last traces of Netware support, first removed in 1.1.0, have - now been removed. - [Rich Salz] - - *) Get rid of Makefile.shared, and in the process, make the processing - of certain files (rc.obj, or the .def/.map/.opt files produced from - the ordinal files) more visible and hopefully easier to trace and - debug (or make silent). - [Richard Levitte] - - *) Make it possible to have environment variable assignments as - arguments to config / Configure. - [Richard Levitte] - - *) Add multi-prime RSA (RFC 8017) support. - [Paul Yang] - - *) Add SM3 implemented according to GB/T 32905-2016 - [ Jack Lloyd <jack.lloyd@ribose.com>, - Ronald Tse <ronald.tse@ribose.com>, - Erick Borsboom <erick.borsboom@ribose.com> ] - - *) Add 'Maximum Fragment Length' TLS extension negotiation and support - as documented in RFC6066. - Based on a patch from Tomasz Moń - [Filipe Raimundo da Silva] - - *) Add SM4 implemented according to GB/T 32907-2016. - [ Jack Lloyd <jack.lloyd@ribose.com>, - Ronald Tse <ronald.tse@ribose.com>, - Erick Borsboom <erick.borsboom@ribose.com> ] - - *) Reimplement -newreq-nodes and ERR_error_string_n; the - original author does not agree with the license change. - [Rich Salz] - - *) Add ARIA AEAD TLS support. - [Jon Spillett] - - *) Some macro definitions to support VS6 have been removed. Visual - Studio 6 has not worked since 1.1.0 - [Rich Salz] - - *) Add ERR_clear_last_mark(), to allow callers to clear the last mark - without clearing the errors. - [Richard Levitte] - - *) Add "atfork" functions. If building on a system that without - pthreads, see doc/man3/OPENSSL_fork_prepare.pod for application - requirements. The RAND facility now uses/requires this. - [Rich Salz] - - *) Add SHA3. - [Andy Polyakov] - - *) The UI API becomes a permanent and integral part of libcrypto, i.e. - not possible to disable entirely. However, it's still possible to - disable the console reading UI method, UI_OpenSSL() (use UI_null() - as a fallback). - - To disable, configure with 'no-ui-console'. 'no-ui' is still - possible to use as an alias. Check at compile time with the - macro OPENSSL_NO_UI_CONSOLE. The macro OPENSSL_NO_UI is still - possible to check and is an alias for OPENSSL_NO_UI_CONSOLE. - [Richard Levitte] - - *) Add a STORE module, which implements a uniform and URI based reader of - stores that can contain keys, certificates, CRLs and numerous other - objects. The main API is loosely based on a few stdio functions, - and includes OSSL_STORE_open, OSSL_STORE_load, OSSL_STORE_eof, - OSSL_STORE_error and OSSL_STORE_close. - The implementation uses backends called "loaders" to implement arbitrary - URI schemes. There is one built in "loader" for the 'file' scheme. - [Richard Levitte] - - *) Add devcrypto engine. This has been implemented against cryptodev-linux, - then adjusted to work on FreeBSD 8.4 as well. - Enable by configuring with 'enable-devcryptoeng'. This is done by default - on BSD implementations, as cryptodev.h is assumed to exist on all of them. - [Richard Levitte] - - *) Module names can prefixed with OSSL_ or OPENSSL_. This affects - util/mkerr.pl, which is adapted to allow those prefixes, leading to - error code calls like this: - - OSSL_FOOerr(OSSL_FOO_F_SOMETHING, OSSL_FOO_R_WHATEVER); - - With this change, we claim the namespaces OSSL and OPENSSL in a manner - that can be encoded in C. For the foreseeable future, this will only - affect new modules. - [Richard Levitte and Tim Hudson] - - *) Removed BSD cryptodev engine. - [Rich Salz] - - *) Add a build target 'build_all_generated', to build all generated files - and only that. This can be used to prepare everything that requires - things like perl for a system that lacks perl and then move everything - to that system and do the rest of the build there. - [Richard Levitte] - - *) In the UI interface, make it possible to duplicate the user data. This - can be used by engines that need to retain the data for a longer time - than just the call where this user data is passed. - [Richard Levitte] - - *) Ignore the '-named_curve auto' value for compatibility of applications - with OpenSSL 1.0.2. - [Tomas Mraz <tmraz@fedoraproject.org>] - - *) Fragmented SSL/TLS alerts are no longer accepted. An alert message is 2 - bytes long. In theory it is permissible in SSLv3 - TLSv1.2 to fragment such - alerts across multiple records (some of which could be empty). In practice - it make no sense to send an empty alert record, or to fragment one. TLSv1.3 - prohibits this altogether and other libraries (BoringSSL, NSS) do not - support this at all. Supporting it adds significant complexity to the - record layer, and its removal is unlikely to cause interoperability - issues. - [Matt Caswell] - - *) Add the ASN.1 types INT32, UINT32, INT64, UINT64 and variants prefixed - with Z. These are meant to replace LONG and ZLONG and to be size safe. - The use of LONG and ZLONG is discouraged and scheduled for deprecation - in OpenSSL 1.2.0. - [Richard Levitte] - - *) Add the 'z' and 'j' modifiers to BIO_printf() et al formatting string, - 'z' is to be used for [s]size_t, and 'j' - with [u]int64_t. - [Richard Levitte, Andy Polyakov] - - *) Add EC_KEY_get0_engine(), which does for EC_KEY what RSA_get0_engine() - does for RSA, etc. - [Richard Levitte] - - *) Have 'config' recognise 64-bit mingw and choose 'mingw64' as the target - platform rather than 'mingw'. - [Richard Levitte] - - *) The functions X509_STORE_add_cert and X509_STORE_add_crl return - success if they are asked to add an object which already exists - in the store. This change cascades to other functions which load - certificates and CRLs. - [Paul Dale] - - *) x86_64 assembly pack: annotate code with DWARF CFI directives to - facilitate stack unwinding even from assembly subroutines. - [Andy Polyakov] - - *) Remove VAX C specific definitions of OPENSSL_EXPORT, OPENSSL_EXTERN. - Also remove OPENSSL_GLOBAL entirely, as it became a no-op. - [Richard Levitte] - - *) Remove the VMS-specific reimplementation of gmtime from crypto/o_times.c. - VMS C's RTL has a fully up to date gmtime() and gmtime_r() since V7.1, - which is the minimum version we support. - [Richard Levitte] - - *) Certificate time validation (X509_cmp_time) enforces stricter - compliance with RFC 5280. Fractional seconds and timezone offsets - are no longer allowed. - [Emilia Käsper] - - *) Add support for ARIA - [Paul Dale] - - *) s_client will now send the Server Name Indication (SNI) extension by - default unless the new "-noservername" option is used. The server name is - based on the host provided to the "-connect" option unless overridden by - using "-servername". - [Matt Caswell] - - *) Add support for SipHash - [Todd Short] - - *) OpenSSL now fails if it receives an unrecognised record type in TLS1.0 - or TLS1.1. Previously this only happened in SSLv3 and TLS1.2. This is to - prevent issues where no progress is being made and the peer continually - sends unrecognised record types, using up resources processing them. - [Matt Caswell] - - *) 'openssl passwd' can now produce SHA256 and SHA512 based output, - using the algorithm defined in - https://www.akkadia.org/drepper/SHA-crypt.txt - [Richard Levitte] - - *) Heartbeat support has been removed; the ABI is changed for now. - [Richard Levitte, Rich Salz] - - *) Support for SSL_OP_NO_ENCRYPT_THEN_MAC in SSL_CONF_cmd. - [Emilia Käsper] - - *) The RSA "null" method, which was partially supported to avoid patent - issues, has been replaced to always returns NULL. - [Rich Salz] - - - Changes between 1.1.0h and 1.1.0i [xx XXX xxxx] - - *) Client DoS due to large DH parameter - - During key agreement in a TLS handshake using a DH(E) based ciphersuite a - malicious server can send a very large prime value to the client. This will - cause the client to spend an unreasonably long period of time generating a - key for this prime resulting in a hang until the client has finished. This - could be exploited in a Denial Of Service attack. - - This issue was reported to OpenSSL on 5th June 2018 by Guido Vranken - (CVE-2018-0732) - [Guido Vranken] - - *) Cache timing vulnerability in RSA Key Generation - - The OpenSSL RSA Key generation algorithm has been shown to be vulnerable to - a cache timing side channel attack. An attacker with sufficient access to - mount cache timing attacks during the RSA key generation process could - recover the private key. - - This issue was reported to OpenSSL on 4th April 2018 by Alejandro Cabrera - Aldaya, Billy Brumley, Cesar Pereida Garcia and Luis Manuel Alvarez Tapia. - (CVE-2018-0737) - [Billy Brumley] - - *) Make EVP_PKEY_asn1_new() a bit stricter about its input. A NULL pem_str - parameter is no longer accepted, as it leads to a corrupt table. NULL - pem_str is reserved for alias entries only. - [Richard Levitte] - - *) Revert blinding in ECDSA sign and instead make problematic addition - length-invariant. Switch even to fixed-length Montgomery multiplication. - [Andy Polyakov] - - *) Change generating and checking of primes so that the error rate of not - being prime depends on the intended use based on the size of the input. - For larger primes this will result in more rounds of Miller-Rabin. - The maximal error rate for primes with more than 1080 bits is lowered - to 2^-128. - [Kurt Roeckx, Annie Yousar] - - *) Increase the number of Miller-Rabin rounds for DSA key generating to 64. - [Kurt Roeckx] - - *) Add blinding to ECDSA and DSA signatures to protect against side channel - attacks discovered by Keegan Ryan (NCC Group). - [Matt Caswell] - - *) When unlocking a pass phrase protected PEM file or PKCS#8 container, we - now allow empty (zero character) pass phrases. - [Richard Levitte] - - *) Certificate time validation (X509_cmp_time) enforces stricter - compliance with RFC 5280. Fractional seconds and timezone offsets - are no longer allowed. - [Emilia Käsper] - - *) Fixed a text canonicalisation bug in CMS - - Where a CMS detached signature is used with text content the text goes - through a canonicalisation process first prior to signing or verifying a - signature. This process strips trailing space at the end of lines, converts - line terminators to CRLF and removes additional trailing line terminators - at the end of a file. A bug in the canonicalisation process meant that - some characters, such as form-feed, were incorrectly treated as whitespace - and removed. This is contrary to the specification (RFC5485). This fix - could mean that detached text data signed with an earlier version of - OpenSSL 1.1.0 may fail to verify using the fixed version, or text data - signed with a fixed OpenSSL may fail to verify with an earlier version of - OpenSSL 1.1.0. A workaround is to only verify the canonicalised text data - and use the "-binary" flag (for the "cms" command line application) or set - the SMIME_BINARY/PKCS7_BINARY/CMS_BINARY flags (if using CMS_verify()). - [Matt Caswell] - - Changes between 1.1.0g and 1.1.0h [27 Mar 2018] - - *) Constructed ASN.1 types with a recursive definition could exceed the stack - - Constructed ASN.1 types with a recursive definition (such as can be found - in PKCS7) could eventually exceed the stack given malicious input with - excessive recursion. This could result in a Denial Of Service attack. There - are no such structures used within SSL/TLS that come from untrusted sources - so this is considered safe. - - This issue was reported to OpenSSL on 4th January 2018 by the OSS-fuzz - project. - (CVE-2018-0739) - [Matt Caswell] - - *) Incorrect CRYPTO_memcmp on HP-UX PA-RISC - - Because of an implementation bug the PA-RISC CRYPTO_memcmp function is - effectively reduced to only comparing the least significant bit of each - byte. This allows an attacker to forge messages that would be considered as - authenticated in an amount of tries lower than that guaranteed by the - security claims of the scheme. The module can only be compiled by the - HP-UX assembler, so that only HP-UX PA-RISC targets are affected. - - This issue was reported to OpenSSL on 2nd March 2018 by Peter Waltenberg - (IBM). - (CVE-2018-0733) - [Andy Polyakov] - - *) Add a build target 'build_all_generated', to build all generated files - and only that. This can be used to prepare everything that requires - things like perl for a system that lacks perl and then move everything - to that system and do the rest of the build there. - [Richard Levitte] - - *) Backport SSL_OP_NO_RENGOTIATION - - OpenSSL 1.0.2 and below had the ability to disable renegotiation using the - (undocumented) SSL3_FLAGS_NO_RENEGOTIATE_CIPHERS flag. Due to the opacity - changes this is no longer possible in 1.1.0. Therefore the new - SSL_OP_NO_RENEGOTIATION option from 1.1.1-dev has been backported to - 1.1.0 to provide equivalent functionality. - - Note that if an application built against 1.1.0h headers (or above) is run - using an older version of 1.1.0 (prior to 1.1.0h) then the option will be - accepted but nothing will happen, i.e. renegotiation will not be prevented. - [Matt Caswell] - - *) Removed the OS390-Unix config target. It relied on a script that doesn't - exist. - [Rich Salz] - - *) rsaz_1024_mul_avx2 overflow bug on x86_64 - - There is an overflow bug in the AVX2 Montgomery multiplication procedure - used in exponentiation with 1024-bit moduli. No EC algorithms are affected. - Analysis suggests that attacks against RSA and DSA as a result of this - defect would be very difficult to perform and are not believed likely. - Attacks against DH1024 are considered just feasible, because most of the - work necessary to deduce information about a private key may be performed - offline. The amount of resources required for such an attack would be - significant. However, for an attack on TLS to be meaningful, the server - would have to share the DH1024 private key among multiple clients, which is - no longer an option since CVE-2016-0701. - - This only affects processors that support the AVX2 but not ADX extensions - like Intel Haswell (4th generation). - - This issue was reported to OpenSSL by David Benjamin (Google). The issue - was originally found via the OSS-Fuzz project. - (CVE-2017-3738) - [Andy Polyakov] - - Changes between 1.1.0f and 1.1.0g [2 Nov 2017] - - *) bn_sqrx8x_internal carry bug on x86_64 - - There is a carry propagating bug in the x86_64 Montgomery squaring - procedure. No EC algorithms are affected. Analysis suggests that attacks - against RSA and DSA as a result of this defect would be very difficult to - perform and are not believed likely. Attacks against DH are considered just - feasible (although very difficult) because most of the work necessary to - deduce information about a private key may be performed offline. The amount - of resources required for such an attack would be very significant and - likely only accessible to a limited number of attackers. An attacker would - additionally need online access to an unpatched system using the target - private key in a scenario with persistent DH parameters and a private - key that is shared between multiple clients. - - This only affects processors that support the BMI1, BMI2 and ADX extensions - like Intel Broadwell (5th generation) and later or AMD Ryzen. - - This issue was reported to OpenSSL by the OSS-Fuzz project. - (CVE-2017-3736) - [Andy Polyakov] - - *) Malformed X.509 IPAddressFamily could cause OOB read - - If an X.509 certificate has a malformed IPAddressFamily extension, - OpenSSL could do a one-byte buffer overread. The most likely result - would be an erroneous display of the certificate in text format. - - This issue was reported to OpenSSL by the OSS-Fuzz project. - (CVE-2017-3735) - [Rich Salz] - - Changes between 1.1.0e and 1.1.0f [25 May 2017] - - *) Have 'config' recognise 64-bit mingw and choose 'mingw64' as the target - platform rather than 'mingw'. - [Richard Levitte] - - *) Remove the VMS-specific reimplementation of gmtime from crypto/o_times.c. - VMS C's RTL has a fully up to date gmtime() and gmtime_r() since V7.1, - which is the minimum version we support. - [Richard Levitte] - - Changes between 1.1.0d and 1.1.0e [16 Feb 2017] - - *) Encrypt-Then-Mac renegotiation crash - - During a renegotiation handshake if the Encrypt-Then-Mac extension is - negotiated where it was not in the original handshake (or vice-versa) then - this can cause OpenSSL to crash (dependant on ciphersuite). Both clients - and servers are affected. - - This issue was reported to OpenSSL by Joe Orton (Red Hat). - (CVE-2017-3733) - [Matt Caswell] - - Changes between 1.1.0c and 1.1.0d [26 Jan 2017] - - *) Truncated packet could crash via OOB read - - If one side of an SSL/TLS path is running on a 32-bit host and a specific - cipher is being used, then a truncated packet can cause that host to - perform an out-of-bounds read, usually resulting in a crash. - - This issue was reported to OpenSSL by Robert Święcki of Google. - (CVE-2017-3731) - [Andy Polyakov] - - *) Bad (EC)DHE parameters cause a client crash - - If a malicious server supplies bad parameters for a DHE or ECDHE key - exchange then this can result in the client attempting to dereference a - NULL pointer leading to a client crash. This could be exploited in a Denial - of Service attack. - - This issue was reported to OpenSSL by Guido Vranken. - (CVE-2017-3730) - [Matt Caswell] - - *) BN_mod_exp may produce incorrect results on x86_64 - - There is a carry propagating bug in the x86_64 Montgomery squaring - procedure. No EC algorithms are affected. Analysis suggests that attacks - against RSA and DSA as a result of this defect would be very difficult to - perform and are not believed likely. Attacks against DH are considered just - feasible (although very difficult) because most of the work necessary to - deduce information about a private key may be performed offline. The amount - of resources required for such an attack would be very significant and - likely only accessible to a limited number of attackers. An attacker would - additionally need online access to an unpatched system using the target - private key in a scenario with persistent DH parameters and a private - key that is shared between multiple clients. For example this can occur by - default in OpenSSL DHE based SSL/TLS ciphersuites. Note: This issue is very - similar to CVE-2015-3193 but must be treated as a separate problem. - - This issue was reported to OpenSSL by the OSS-Fuzz project. - (CVE-2017-3732) - [Andy Polyakov] - - Changes between 1.1.0b and 1.1.0c [10 Nov 2016] - - *) ChaCha20/Poly1305 heap-buffer-overflow - - TLS connections using *-CHACHA20-POLY1305 ciphersuites are susceptible to - a DoS attack by corrupting larger payloads. This can result in an OpenSSL - crash. This issue is not considered to be exploitable beyond a DoS. - - This issue was reported to OpenSSL by Robert Święcki (Google Security Team) - (CVE-2016-7054) - [Richard Levitte] - - *) CMS Null dereference - - Applications parsing invalid CMS structures can crash with a NULL pointer - dereference. This is caused by a bug in the handling of the ASN.1 CHOICE - type in OpenSSL 1.1.0 which can result in a NULL value being passed to the - structure callback if an attempt is made to free certain invalid encodings. - Only CHOICE structures using a callback which do not handle NULL value are - affected. - - This issue was reported to OpenSSL by Tyler Nighswander of ForAllSecure. - (CVE-2016-7053) - [Stephen Henson] - - *) Montgomery multiplication may produce incorrect results - - There is a carry propagating bug in the Broadwell-specific Montgomery - multiplication procedure that handles input lengths divisible by, but - longer than 256 bits. Analysis suggests that attacks against RSA, DSA - and DH private keys are impossible. This is because the subroutine in - question is not used in operations with the private key itself and an input - of the attacker's direct choice. Otherwise the bug can manifest itself as - transient authentication and key negotiation failures or reproducible - erroneous outcome of public-key operations with specially crafted input. - Among EC algorithms only Brainpool P-512 curves are affected and one - presumably can attack ECDH key negotiation. Impact was not analyzed in - detail, because pre-requisites for attack are considered unlikely. Namely - multiple clients have to choose the curve in question and the server has to - share the private key among them, neither of which is default behaviour. - Even then only clients that chose the curve will be affected. - - This issue was publicly reported as transient failures and was not - initially recognized as a security issue. Thanks to Richard Morgan for - providing reproducible case. - (CVE-2016-7055) - [Andy Polyakov] - - *) Removed automatic addition of RPATH in shared libraries and executables, - as this was a remainder from OpenSSL 1.0.x and isn't needed any more. - [Richard Levitte] - - Changes between 1.1.0a and 1.1.0b [26 Sep 2016] - - *) Fix Use After Free for large message sizes - - The patch applied to address CVE-2016-6307 resulted in an issue where if a - message larger than approx 16k is received then the underlying buffer to - store the incoming message is reallocated and moved. Unfortunately a - dangling pointer to the old location is left which results in an attempt to - write to the previously freed location. This is likely to result in a - crash, however it could potentially lead to execution of arbitrary code. - - This issue only affects OpenSSL 1.1.0a. - - This issue was reported to OpenSSL by Robert Święcki. - (CVE-2016-6309) - [Matt Caswell] - - Changes between 1.1.0 and 1.1.0a [22 Sep 2016] - - *) OCSP Status Request extension unbounded memory growth - - A malicious client can send an excessively large OCSP Status Request - extension. If that client continually requests renegotiation, sending a - large OCSP Status Request extension each time, then there will be unbounded - memory growth on the server. This will eventually lead to a Denial Of - Service attack through memory exhaustion. Servers with a default - configuration are vulnerable even if they do not support OCSP. Builds using - the "no-ocsp" build time option are not affected. - - This issue was reported to OpenSSL by Shi Lei (Gear Team, Qihoo 360 Inc.) - (CVE-2016-6304) - [Matt Caswell] - - *) SSL_peek() hang on empty record - - OpenSSL 1.1.0 SSL/TLS will hang during a call to SSL_peek() if the peer - sends an empty record. This could be exploited by a malicious peer in a - Denial Of Service attack. - - This issue was reported to OpenSSL by Alex Gaynor. - (CVE-2016-6305) - [Matt Caswell] - - *) Excessive allocation of memory in tls_get_message_header() and - dtls1_preprocess_fragment() - - A (D)TLS message includes 3 bytes for its length in the header for the - message. This would allow for messages up to 16Mb in length. Messages of - this length are excessive and OpenSSL includes a check to ensure that a - peer is sending reasonably sized messages in order to avoid too much memory - being consumed to service a connection. A flaw in the logic of version - 1.1.0 means that memory for the message is allocated too early, prior to - the excessive message length check. Due to way memory is allocated in - OpenSSL this could mean an attacker could force up to 21Mb to be allocated - to service a connection. This could lead to a Denial of Service through - memory exhaustion. However, the excessive message length check still takes - place, and this would cause the connection to immediately fail. Assuming - that the application calls SSL_free() on the failed connection in a timely - manner then the 21Mb of allocated memory will then be immediately freed - again. Therefore the excessive memory allocation will be transitory in - nature. This then means that there is only a security impact if: - - 1) The application does not call SSL_free() in a timely manner in the event - that the connection fails - or - 2) The application is working in a constrained environment where there is - very little free memory - or - 3) The attacker initiates multiple connection attempts such that there are - multiple connections in a state where memory has been allocated for the - connection; SSL_free() has not yet been called; and there is insufficient - memory to service the multiple requests. - - Except in the instance of (1) above any Denial Of Service is likely to be - transitory because as soon as the connection fails the memory is - subsequently freed again in the SSL_free() call. However there is an - increased risk during this period of application crashes due to the lack of - memory - which would then mean a more serious Denial of Service. - - This issue was reported to OpenSSL by Shi Lei (Gear Team, Qihoo 360 Inc.) - (CVE-2016-6307 and CVE-2016-6308) - [Matt Caswell] - - *) solaris-x86-cc, i.e. 32-bit configuration with vendor compiler, - had to be removed. Primary reason is that vendor assembler can't - assemble our modules with -KPIC flag. As result it, assembly - support, was not even available as option. But its lack means - lack of side-channel resistant code, which is incompatible with - security by todays standards. Fortunately gcc is readily available - prepackaged option, which we firmly point at... - [Andy Polyakov] - - Changes between 1.0.2h and 1.1.0 [25 Aug 2016] - - *) Windows command-line tool supports UTF-8 opt-in option for arguments - and console input. Setting OPENSSL_WIN32_UTF8 environment variable - (to any value) allows Windows user to access PKCS#12 file generated - with Windows CryptoAPI and protected with non-ASCII password, as well - as files generated under UTF-8 locale on Linux also protected with - non-ASCII password. - [Andy Polyakov] - - *) To mitigate the SWEET32 attack (CVE-2016-2183), 3DES cipher suites - have been disabled by default and removed from DEFAULT, just like RC4. - See the RC4 item below to re-enable both. - [Rich Salz] - - *) The method for finding the storage location for the Windows RAND seed file - has changed. First we check %RANDFILE%. If that is not set then we check - the directories %HOME%, %USERPROFILE% and %SYSTEMROOT% in that order. If - all else fails we fall back to C:\. - [Matt Caswell] - - *) The EVP_EncryptUpdate() function has had its return type changed from void - to int. A return of 0 indicates and error while a return of 1 indicates - success. - [Matt Caswell] - - *) The flags RSA_FLAG_NO_CONSTTIME, DSA_FLAG_NO_EXP_CONSTTIME and - DH_FLAG_NO_EXP_CONSTTIME which previously provided the ability to switch - off the constant time implementation for RSA, DSA and DH have been made - no-ops and deprecated. - [Matt Caswell] - - *) Windows RAND implementation was simplified to only get entropy by - calling CryptGenRandom(). Various other RAND-related tickets - were also closed. - [Joseph Wylie Yandle, Rich Salz] - - *) The stack and lhash API's were renamed to start with OPENSSL_SK_ - and OPENSSL_LH_, respectively. The old names are available - with API compatibility. They new names are now completely documented. - [Rich Salz] - - *) Unify TYPE_up_ref(obj) methods signature. - SSL_CTX_up_ref(), SSL_up_ref(), X509_up_ref(), EVP_PKEY_up_ref(), - X509_CRL_up_ref(), X509_OBJECT_up_ref_count() methods are now returning an - int (instead of void) like all others TYPE_up_ref() methods. - So now these methods also check the return value of CRYPTO_atomic_add(), - and the validity of object reference counter. - [fdasilvayy@gmail.com] - - *) With Windows Visual Studio builds, the .pdb files are installed - alongside the installed libraries and executables. For a static - library installation, ossl_static.pdb is the associate compiler - generated .pdb file to be used when linking programs. - [Richard Levitte] - - *) Remove openssl.spec. Packaging files belong with the packagers. - [Richard Levitte] - - *) Automatic Darwin/OSX configuration has had a refresh, it will now - recognise x86_64 architectures automatically. You can still decide - to build for a different bitness with the environment variable - KERNEL_BITS (can be 32 or 64), for example: - - KERNEL_BITS=32 ./config - - [Richard Levitte] - - *) Change default algorithms in pkcs8 utility to use PKCS#5 v2.0, - 256 bit AES and HMAC with SHA256. - [Steve Henson] - - *) Remove support for MIPS o32 ABI on IRIX (and IRIX only). - [Andy Polyakov] - - *) Triple-DES ciphers have been moved from HIGH to MEDIUM. - [Rich Salz] - - *) To enable users to have their own config files and build file templates, - Configure looks in the directory indicated by the environment variable - OPENSSL_LOCAL_CONFIG_DIR as well as the in-source Configurations/ - directory. On VMS, OPENSSL_LOCAL_CONFIG_DIR is expected to be a logical - name and is used as is. - [Richard Levitte] - - *) The following datatypes were made opaque: X509_OBJECT, X509_STORE_CTX, - X509_STORE, X509_LOOKUP, and X509_LOOKUP_METHOD. The unused type - X509_CERT_FILE_CTX was removed. - [Rich Salz] - - *) "shared" builds are now the default. To create only static libraries use - the "no-shared" Configure option. - [Matt Caswell] - - *) Remove the no-aes, no-hmac, no-rsa, no-sha and no-md5 Configure options. - All of these option have not worked for some while and are fundamental - algorithms. - [Matt Caswell] - - *) Make various cleanup routines no-ops and mark them as deprecated. Most - global cleanup functions are no longer required because they are handled - via auto-deinit (see OPENSSL_init_crypto and OPENSSL_init_ssl man pages). - Explicitly de-initing can cause problems (e.g. where a library that uses - OpenSSL de-inits, but an application is still using it). The affected - functions are CONF_modules_free(), ENGINE_cleanup(), OBJ_cleanup(), - EVP_cleanup(), BIO_sock_cleanup(), CRYPTO_cleanup_all_ex_data(), - RAND_cleanup(), SSL_COMP_free_compression_methods(), ERR_free_strings() and - COMP_zlib_cleanup(). - [Matt Caswell] - - *) --strict-warnings no longer enables runtime debugging options - such as REF_DEBUG. Instead, debug options are automatically - enabled with '--debug' builds. - [Andy Polyakov, Emilia Käsper] - - *) Made DH and DH_METHOD opaque. The structures for managing DH objects - have been moved out of the public header files. New functions for managing - these have been added. - [Matt Caswell] - - *) Made RSA and RSA_METHOD opaque. The structures for managing RSA - objects have been moved out of the public header files. New - functions for managing these have been added. - [Richard Levitte] - - *) Made DSA and DSA_METHOD opaque. The structures for managing DSA objects - have been moved out of the public header files. New functions for managing - these have been added. - [Matt Caswell] - - *) Made BIO and BIO_METHOD opaque. The structures for managing BIOs have been - moved out of the public header files. New functions for managing these - have been added. - [Matt Caswell] - - *) Removed no-rijndael as a config option. Rijndael is an old name for AES. - [Matt Caswell] - - *) Removed the mk1mf build scripts. - [Richard Levitte] - - *) Headers are now wrapped, if necessary, with OPENSSL_NO_xxx, so - it is always safe to #include a header now. - [Rich Salz] - - *) Removed the aged BC-32 config and all its supporting scripts - [Richard Levitte] - - *) Removed support for Ultrix, Netware, and OS/2. - [Rich Salz] - - *) Add support for HKDF. - [Alessandro Ghedini] - - *) Add support for blake2b and blake2s - [Bill Cox] - - *) Added support for "pipelining". Ciphers that have the - EVP_CIPH_FLAG_PIPELINE flag set have a capability to process multiple - encryptions/decryptions simultaneously. There are currently no built-in - ciphers with this property but the expectation is that engines will be able - to offer it to significantly improve throughput. Support has been extended - into libssl so that multiple records for a single connection can be - processed in one go (for >=TLS 1.1). - [Matt Caswell] - - *) Added the AFALG engine. This is an async capable engine which is able to - offload work to the Linux kernel. In this initial version it only supports - AES128-CBC. The kernel must be version 4.1.0 or greater. - [Catriona Lucey] - - *) OpenSSL now uses a new threading API. It is no longer necessary to - set locking callbacks to use OpenSSL in a multi-threaded environment. There - are two supported threading models: pthreads and windows threads. It is - also possible to configure OpenSSL at compile time for "no-threads". The - old threading API should no longer be used. The functions have been - replaced with "no-op" compatibility macros. - [Alessandro Ghedini, Matt Caswell] - - *) Modify behavior of ALPN to invoke callback after SNI/servername - callback, such that updates to the SSL_CTX affect ALPN. - [Todd Short] - - *) Add SSL_CIPHER queries for authentication and key-exchange. - [Todd Short] - - *) Changes to the DEFAULT cipherlist: - - Prefer (EC)DHE handshakes over plain RSA. - - Prefer AEAD ciphers over legacy ciphers. - - Prefer ECDSA over RSA when both certificates are available. - - Prefer TLSv1.2 ciphers/PRF. - - Remove DSS, SEED, IDEA, CAMELLIA, and AES-CCM from the - default cipherlist. - [Emilia Käsper] - - *) Change the ECC default curve list to be this, in order: x25519, - secp256r1, secp521r1, secp384r1. - [Rich Salz] - - *) RC4 based libssl ciphersuites are now classed as "weak" ciphers and are - disabled by default. They can be re-enabled using the - enable-weak-ssl-ciphers option to Configure. - [Matt Caswell] - - *) If the server has ALPN configured, but supports no protocols that the - client advertises, send a fatal "no_application_protocol" alert. - This behaviour is SHALL in RFC 7301, though it isn't universally - implemented by other servers. - [Emilia Käsper] - - *) Add X25519 support. - Add ASN.1 and EVP_PKEY methods for X25519. This includes support - for public and private key encoding using the format documented in - draft-ietf-curdle-pkix-02. The corresponding EVP_PKEY method supports - key generation and key derivation. - - TLS support complies with draft-ietf-tls-rfc4492bis-08 and uses - X25519(29). - [Steve Henson] - - *) Deprecate SRP_VBASE_get_by_user. - SRP_VBASE_get_by_user had inconsistent memory management behaviour. - In order to fix an unavoidable memory leak (CVE-2016-0798), - SRP_VBASE_get_by_user was changed to ignore the "fake user" SRP - seed, even if the seed is configured. - - Users should use SRP_VBASE_get1_by_user instead. Note that in - SRP_VBASE_get1_by_user, caller must free the returned value. Note - also that even though configuring the SRP seed attempts to hide - invalid usernames by continuing the handshake with fake - credentials, this behaviour is not constant time and no strong - guarantees are made that the handshake is indistinguishable from - that of a valid user. - [Emilia Käsper] - - *) Configuration change; it's now possible to build dynamic engines - without having to build shared libraries and vice versa. This - only applies to the engines in engines/, those in crypto/engine/ - will always be built into libcrypto (i.e. "static"). - - Building dynamic engines is enabled by default; to disable, use - the configuration option "disable-dynamic-engine". - - The only requirements for building dynamic engines are the - presence of the DSO module and building with position independent - code, so they will also automatically be disabled if configuring - with "disable-dso" or "disable-pic". - - The macros OPENSSL_NO_STATIC_ENGINE and OPENSSL_NO_DYNAMIC_ENGINE - are also taken away from openssl/opensslconf.h, as they are - irrelevant. - [Richard Levitte] - - *) Configuration change; if there is a known flag to compile - position independent code, it will always be applied on the - libcrypto and libssl object files, and never on the application - object files. This means other libraries that use routines from - libcrypto / libssl can be made into shared libraries regardless - of how OpenSSL was configured. - - If this isn't desirable, the configuration options "disable-pic" - or "no-pic" can be used to disable the use of PIC. This will - also disable building shared libraries and dynamic engines. - [Richard Levitte] - - *) Removed JPAKE code. It was experimental and has no wide use. - [Rich Salz] - - *) The INSTALL_PREFIX Makefile variable has been renamed to - DESTDIR. That makes for less confusion on what this variable - is for. Also, the configuration option --install_prefix is - removed. - [Richard Levitte] - - *) Heartbeat for TLS has been removed and is disabled by default - for DTLS; configure with enable-heartbeats. Code that uses the - old #define's might need to be updated. - [Emilia Käsper, Rich Salz] - - *) Rename REF_CHECK to REF_DEBUG. - [Rich Salz] - - *) New "unified" build system - - The "unified" build system is aimed to be a common system for all - platforms we support. With it comes new support for VMS. - - This system builds supports building in a different directory tree - than the source tree. It produces one Makefile (for unix family - or lookalikes), or one descrip.mms (for VMS). - - The source of information to make the Makefile / descrip.mms is - small files called 'build.info', holding the necessary - information for each directory with source to compile, and a - template in Configurations, like unix-Makefile.tmpl or - descrip.mms.tmpl. - - With this change, the library names were also renamed on Windows - and on VMS. They now have names that are closer to the standard - on Unix, and include the major version number, and in certain - cases, the architecture they are built for. See "Notes on shared - libraries" in INSTALL. - - We rely heavily on the perl module Text::Template. - [Richard Levitte] - - *) Added support for auto-initialisation and de-initialisation of the library. - OpenSSL no longer requires explicit init or deinit routines to be called, - except in certain circumstances. See the OPENSSL_init_crypto() and - OPENSSL_init_ssl() man pages for further information. - [Matt Caswell] - - *) The arguments to the DTLSv1_listen function have changed. Specifically the - "peer" argument is now expected to be a BIO_ADDR object. - - *) Rewrite of BIO networking library. The BIO library lacked consistent - support of IPv6, and adding it required some more extensive - modifications. This introduces the BIO_ADDR and BIO_ADDRINFO types, - which hold all types of addresses and chains of address information. - It also introduces a new API, with functions like BIO_socket, - BIO_connect, BIO_listen, BIO_lookup and a rewrite of BIO_accept. - The source/sink BIOs BIO_s_connect, BIO_s_accept and BIO_s_datagram - have been adapted accordingly. - [Richard Levitte] - - *) RSA_padding_check_PKCS1_type_1 now accepts inputs with and without - the leading 0-byte. - [Emilia Käsper] - - *) CRIME protection: disable compression by default, even if OpenSSL is - compiled with zlib enabled. Applications can still enable compression - by calling SSL_CTX_clear_options(ctx, SSL_OP_NO_COMPRESSION), or by - using the SSL_CONF library to configure compression. - [Emilia Käsper] - - *) The signature of the session callback configured with - SSL_CTX_sess_set_get_cb was changed. The read-only input buffer - was explicitly marked as 'const unsigned char*' instead of - 'unsigned char*'. - [Emilia Käsper] - - *) Always DPURIFY. Remove the use of uninitialized memory in the - RNG, and other conditional uses of DPURIFY. This makes -DPURIFY a no-op. - [Emilia Käsper] - - *) Removed many obsolete configuration items, including - DES_PTR, DES_RISC1, DES_RISC2, DES_INT - MD2_CHAR, MD2_INT, MD2_LONG - BF_PTR, BF_PTR2 - IDEA_SHORT, IDEA_LONG - RC2_SHORT, RC2_LONG, RC4_LONG, RC4_CHUNK, RC4_INDEX - [Rich Salz, with advice from Andy Polyakov] - - *) Many BN internals have been moved to an internal header file. - [Rich Salz with help from Andy Polyakov] - - *) Configuration and writing out the results from it has changed. - Files such as Makefile include/openssl/opensslconf.h and are now - produced through general templates, such as Makefile.in and - crypto/opensslconf.h.in and some help from the perl module - Text::Template. - - Also, the center of configuration information is no longer - Makefile. Instead, Configure produces a perl module in - configdata.pm which holds most of the config data (in the hash - table %config), the target data that comes from the target - configuration in one of the Configurations/*.conf files (in - %target). - [Richard Levitte] - - *) To clarify their intended purposes, the Configure options - --prefix and --openssldir change their semantics, and become more - straightforward and less interdependent. - - --prefix shall be used exclusively to give the location INSTALLTOP - where programs, scripts, libraries, include files and manuals are - going to be installed. The default is now /usr/local. - - --openssldir shall be used exclusively to give the default - location OPENSSLDIR where certificates, private keys, CRLs are - managed. This is also where the default openssl.cnf gets - installed. - If the directory given with this option is a relative path, the - values of both the --prefix value and the --openssldir value will - be combined to become OPENSSLDIR. - The default for --openssldir is INSTALLTOP/ssl. - - Anyone who uses --openssldir to specify where OpenSSL is to be - installed MUST change to use --prefix instead. - [Richard Levitte] - - *) The GOST engine was out of date and therefore it has been removed. An up - to date GOST engine is now being maintained in an external repository. - See: https://wiki.openssl.org/index.php/Binaries. Libssl still retains - support for GOST ciphersuites (these are only activated if a GOST engine - is present). - [Matt Caswell] - - *) EGD is no longer supported by default; use enable-egd when - configuring. - [Ben Kaduk and Rich Salz] - - *) The distribution now has Makefile.in files, which are used to - create Makefile's when Configure is run. *Configure must be run - before trying to build now.* - [Rich Salz] - - *) The return value for SSL_CIPHER_description() for error conditions - has changed. - [Rich Salz] - - *) Support for RFC6698/RFC7671 DANE TLSA peer authentication. - - Obtaining and performing DNSSEC validation of TLSA records is - the application's responsibility. The application provides - the TLSA records of its choice to OpenSSL, and these are then - used to authenticate the peer. - - The TLSA records need not even come from DNS. They can, for - example, be used to implement local end-entity certificate or - trust-anchor "pinning", where the "pin" data takes the form - of TLSA records, which can augment or replace verification - based on the usual WebPKI public certification authorities. - [Viktor Dukhovni] - - *) Revert default OPENSSL_NO_DEPRECATED setting. Instead OpenSSL - continues to support deprecated interfaces in default builds. - However, applications are strongly advised to compile their - source files with -DOPENSSL_API_COMPAT=0x10100000L, which hides - the declarations of all interfaces deprecated in 0.9.8, 1.0.0 - or the 1.1.0 releases. - - In environments in which all applications have been ported to - not use any deprecated interfaces OpenSSL's Configure script - should be used with the --api=1.1.0 option to entirely remove - support for the deprecated features from the library and - unconditionally disable them in the installed headers. - Essentially the same effect can be achieved with the "no-deprecated" - argument to Configure, except that this will always restrict - the build to just the latest API, rather than a fixed API - version. - - As applications are ported to future revisions of the API, - they should update their compile-time OPENSSL_API_COMPAT define - accordingly, but in most cases should be able to continue to - compile with later releases. - - The OPENSSL_API_COMPAT versions for 1.0.0, and 0.9.8 are - 0x10000000L and 0x00908000L, respectively. However those - versions did not support the OPENSSL_API_COMPAT feature, and - so applications are not typically tested for explicit support - of just the undeprecated features of either release. - [Viktor Dukhovni] - - *) Add support for setting the minimum and maximum supported protocol. - It can bet set via the SSL_set_min_proto_version() and - SSL_set_max_proto_version(), or via the SSL_CONF's MinProtocol and - MaxProtocol. It's recommended to use the new APIs to disable - protocols instead of disabling individual protocols using - SSL_set_options() or SSL_CONF's Protocol. This change also - removes support for disabling TLS 1.2 in the OpenSSL TLS - client at compile time by defining OPENSSL_NO_TLS1_2_CLIENT. - [Kurt Roeckx] - - *) Support for ChaCha20 and Poly1305 added to libcrypto and libssl. - [Andy Polyakov] - - *) New EC_KEY_METHOD, this replaces the older ECDSA_METHOD and ECDH_METHOD - and integrates ECDSA and ECDH functionality into EC. Implementations can - now redirect key generation and no longer need to convert to or from - ECDSA_SIG format. - - Note: the ecdsa.h and ecdh.h headers are now no longer needed and just - include the ec.h header file instead. - [Steve Henson] - - *) Remove support for all 40 and 56 bit ciphers. This includes all the export - ciphers who are no longer supported and drops support the ephemeral RSA key - exchange. The LOW ciphers currently doesn't have any ciphers in it. - [Kurt Roeckx] - - *) Made EVP_MD_CTX, EVP_MD, EVP_CIPHER_CTX, EVP_CIPHER and HMAC_CTX - opaque. For HMAC_CTX, the following constructors and destructors - were added: - - HMAC_CTX *HMAC_CTX_new(void); - void HMAC_CTX_free(HMAC_CTX *ctx); - - For EVP_MD and EVP_CIPHER, complete APIs to create, fill and - destroy such methods has been added. See EVP_MD_meth_new(3) and - EVP_CIPHER_meth_new(3) for documentation. - - Additional changes: - 1) EVP_MD_CTX_cleanup(), EVP_CIPHER_CTX_cleanup() and - HMAC_CTX_cleanup() were removed. HMAC_CTX_reset() and - EVP_MD_CTX_reset() should be called instead to reinitialise - an already created structure. - 2) For consistency with the majority of our object creators and - destructors, EVP_MD_CTX_(create|destroy) were renamed to - EVP_MD_CTX_(new|free). The old names are retained as macros - for deprecated builds. - [Richard Levitte] - - *) Added ASYNC support. Libcrypto now includes the async sub-library to enable - cryptographic operations to be performed asynchronously as long as an - asynchronous capable engine is used. See the ASYNC_start_job() man page for - further details. Libssl has also had this capability integrated with the - introduction of the new mode SSL_MODE_ASYNC and associated error - SSL_ERROR_WANT_ASYNC. See the SSL_CTX_set_mode() and SSL_get_error() man - pages. This work was developed in partnership with Intel Corp. - [Matt Caswell] - - *) SSL_{CTX_}set_ecdh_auto() has been removed and ECDH is support is - always enabled now. If you want to disable the support you should - exclude it using the list of supported ciphers. This also means that the - "-no_ecdhe" option has been removed from s_server. - [Kurt Roeckx] - - *) SSL_{CTX}_set_tmp_ecdh() which can set 1 EC curve now internally calls - SSL_{CTX_}set1_curves() which can set a list. - [Kurt Roeckx] - - *) Remove support for SSL_{CTX_}set_tmp_ecdh_callback(). You should set the - curve you want to support using SSL_{CTX_}set1_curves(). - [Kurt Roeckx] - - *) State machine rewrite. The state machine code has been significantly - refactored in order to remove much duplication of code and solve issues - with the old code (see ssl/statem/README for further details). This change - does have some associated API changes. Notably the SSL_state() function - has been removed and replaced by SSL_get_state which now returns an - "OSSL_HANDSHAKE_STATE" instead of an int. SSL_set_state() has been removed - altogether. The previous handshake states defined in ssl.h and ssl3.h have - also been removed. - [Matt Caswell] - - *) All instances of the string "ssleay" in the public API were replaced - with OpenSSL (case-matching; e.g., OPENSSL_VERSION for #define's) - Some error codes related to internal RSA_eay API's were renamed. - [Rich Salz] - - *) The demo files in crypto/threads were moved to demo/threads. - [Rich Salz] - - *) Removed obsolete engines: 4758cca, aep, atalla, cswift, nuron, gmp, - sureware and ubsec. - [Matt Caswell, Rich Salz] - - *) New ASN.1 embed macro. - - New ASN.1 macro ASN1_EMBED. This is the same as ASN1_SIMPLE except the - structure is not allocated: it is part of the parent. That is instead of - - FOO *x; - - it must be: - - FOO x; - - This reduces memory fragmentation and make it impossible to accidentally - set a mandatory field to NULL. - - This currently only works for some fields specifically a SEQUENCE, CHOICE, - or ASN1_STRING type which is part of a parent SEQUENCE. Since it is - equivalent to ASN1_SIMPLE it cannot be tagged, OPTIONAL, SET OF or - SEQUENCE OF. - [Steve Henson] - - *) Remove EVP_CHECK_DES_KEY, a compile-time option that never compiled. - [Emilia Käsper] - - *) Removed DES and RC4 ciphersuites from DEFAULT. Also removed RC2 although - in 1.0.2 EXPORT was already removed and the only RC2 ciphersuite is also - an EXPORT one. COMPLEMENTOFDEFAULT has been updated accordingly to add - DES and RC4 ciphersuites. - [Matt Caswell] - - *) Rewrite EVP_DecodeUpdate (base64 decoding) to fix several bugs. - This changes the decoding behaviour for some invalid messages, - though the change is mostly in the more lenient direction, and - legacy behaviour is preserved as much as possible. - [Emilia Käsper] - - *) Fix no-stdio build. - [ David Woodhouse <David.Woodhouse@intel.com> and also - Ivan Nestlerode <ivan.nestlerode@sonos.com> ] - - *) New testing framework - The testing framework has been largely rewritten and is now using - perl and the perl modules Test::Harness and an extended variant of - Test::More called OpenSSL::Test to do its work. All test scripts in - test/ have been rewritten into test recipes, and all direct calls to - executables in test/Makefile have become individual recipes using the - simplified testing OpenSSL::Test::Simple. - - For documentation on our testing modules, do: - - perldoc test/testlib/OpenSSL/Test/Simple.pm - perldoc test/testlib/OpenSSL/Test.pm - - [Richard Levitte] - - *) Revamped memory debug; only -DCRYPTO_MDEBUG and -DCRYPTO_MDEBUG_ABORT - are used; the latter aborts on memory leaks (usually checked on exit). - Some undocumented "set malloc, etc., hooks" functions were removed - and others were changed. All are now documented. - [Rich Salz] - - *) In DSA_generate_parameters_ex, if the provided seed is too short, - return an error - [Rich Salz and Ismo Puustinen <ismo.puustinen@intel.com>] - - *) Rewrite PSK to support ECDHE_PSK, DHE_PSK and RSA_PSK. Add ciphersuites - from RFC4279, RFC4785, RFC5487, RFC5489. - - Thanks to Christian J. Dietrich and Giuseppe D'Angelo for the - original RSA_PSK patch. - [Steve Henson] - - *) Dropped support for the SSL3_FLAGS_DELAY_CLIENT_FINISHED flag. This SSLeay - era flag was never set throughout the codebase (only read). Also removed - SSL3_FLAGS_POP_BUFFER which was only used if - SSL3_FLAGS_DELAY_CLIENT_FINISHED was also set. - [Matt Caswell] - - *) Changed the default name options in the "ca", "crl", "req" and "x509" - to be "oneline" instead of "compat". - [Richard Levitte] - - *) Remove SSL_OP_TLS_BLOCK_PADDING_BUG. This is SSLeay legacy, we're - not aware of clients that still exhibit this bug, and the workaround - hasn't been working properly for a while. - [Emilia Käsper] - - *) The return type of BIO_number_read() and BIO_number_written() as well as - the corresponding num_read and num_write members in the BIO structure has - changed from unsigned long to uint64_t. On platforms where an unsigned - long is 32 bits (e.g. Windows) these counters could overflow if >4Gb is - transferred. - [Matt Caswell] - - *) Given the pervasive nature of TLS extensions it is inadvisable to run - OpenSSL without support for them. It also means that maintaining - the OPENSSL_NO_TLSEXT option within the code is very invasive (and probably - not well tested). Therefore the OPENSSL_NO_TLSEXT option has been removed. - [Matt Caswell] - - *) Removed support for the two export grade static DH ciphersuites - EXP-DH-RSA-DES-CBC-SHA and EXP-DH-DSS-DES-CBC-SHA. These two ciphersuites - were newly added (along with a number of other static DH ciphersuites) to - 1.0.2. However the two export ones have *never* worked since they were - introduced. It seems strange in any case to be adding new export - ciphersuites, and given "logjam" it also does not seem correct to fix them. - [Matt Caswell] - - *) Version negotiation has been rewritten. In particular SSLv23_method(), - SSLv23_client_method() and SSLv23_server_method() have been deprecated, - and turned into macros which simply call the new preferred function names - TLS_method(), TLS_client_method() and TLS_server_method(). All new code - should use the new names instead. Also as part of this change the ssl23.h - header file has been removed. - [Matt Caswell] - - *) Support for Kerberos ciphersuites in TLS (RFC2712) has been removed. This - code and the associated standard is no longer considered fit-for-purpose. - [Matt Caswell] - - *) RT2547 was closed. When generating a private key, try to make the - output file readable only by the owner. This behavior change might - be noticeable when interacting with other software. - - *) Documented all exdata functions. Added CRYPTO_free_ex_index. - Added a test. - [Rich Salz] - - *) Added HTTP GET support to the ocsp command. - [Rich Salz] - - *) Changed default digest for the dgst and enc commands from MD5 to - sha256 - [Rich Salz] - - *) RAND_pseudo_bytes has been deprecated. Users should use RAND_bytes instead. - [Matt Caswell] - - *) Added support for TLS extended master secret from - draft-ietf-tls-session-hash-03.txt. Thanks for Alfredo Pironti for an - initial patch which was a great help during development. - [Steve Henson] - - *) All libssl internal structures have been removed from the public header - files, and the OPENSSL_NO_SSL_INTERN option has been removed (since it is - now redundant). Users should not attempt to access internal structures - directly. Instead they should use the provided API functions. - [Matt Caswell] - - *) config has been changed so that by default OPENSSL_NO_DEPRECATED is used. - Access to deprecated functions can be re-enabled by running config with - "enable-deprecated". In addition applications wishing to use deprecated - functions must define OPENSSL_USE_DEPRECATED. Note that this new behaviour - will, by default, disable some transitive includes that previously existed - in the header files (e.g. ec.h will no longer, by default, include bn.h) - [Matt Caswell] - - *) Added support for OCB mode. OpenSSL has been granted a patent license - compatible with the OpenSSL license for use of OCB. Details are available - at https://www.openssl.org/source/OCB-patent-grant-OpenSSL.pdf. Support - for OCB can be removed by calling config with no-ocb. - [Matt Caswell] - - *) SSLv2 support has been removed. It still supports receiving a SSLv2 - compatible client hello. - [Kurt Roeckx] - - *) Increased the minimal RSA keysize from 256 to 512 bits [Rich Salz], - done while fixing the error code for the key-too-small case. - [Annie Yousar <a.yousar@informatik.hu-berlin.de>] - - *) CA.sh has been removed; use CA.pl instead. - [Rich Salz] - - *) Removed old DES API. - [Rich Salz] - - *) Remove various unsupported platforms: - Sony NEWS4 - BEOS and BEOS_R5 - NeXT - SUNOS - MPE/iX - Sinix/ReliantUNIX RM400 - DGUX - NCR - Tandem - Cray - 16-bit platforms such as WIN16 - [Rich Salz] - - *) Clean up OPENSSL_NO_xxx #define's - Use setbuf() and remove OPENSSL_NO_SETVBUF_IONBF - Rename OPENSSL_SYSNAME_xxx to OPENSSL_SYS_xxx - OPENSSL_NO_EC{DH,DSA} merged into OPENSSL_NO_EC - OPENSSL_NO_RIPEMD160, OPENSSL_NO_RIPEMD merged into OPENSSL_NO_RMD160 - OPENSSL_NO_FP_API merged into OPENSSL_NO_STDIO - Remove OPENSSL_NO_BIO OPENSSL_NO_BUFFER OPENSSL_NO_CHAIN_VERIFY - OPENSSL_NO_EVP OPENSSL_NO_FIPS_ERR OPENSSL_NO_HASH_COMP - OPENSSL_NO_LHASH OPENSSL_NO_OBJECT OPENSSL_NO_SPEED OPENSSL_NO_STACK - OPENSSL_NO_X509 OPENSSL_NO_X509_VERIFY - Remove MS_STATIC; it's a relic from platforms <32 bits. - [Rich Salz] - - *) Cleaned up dead code - Remove all but one '#ifdef undef' which is to be looked at. - [Rich Salz] - - *) Clean up calling of xxx_free routines. - Just like free(), fix most of the xxx_free routines to accept - NULL. Remove the non-null checks from callers. Save much code. - [Rich Salz] - - *) Add secure heap for storage of private keys (when possible). - Add BIO_s_secmem(), CBIGNUM, etc. - Contributed by Akamai Technologies under our Corporate CLA. - [Rich Salz] - - *) Experimental support for a new, fast, unbiased prime candidate generator, - bn_probable_prime_dh_coprime(). Not currently used by any prime generator. - [Felix Laurie von Massenbach <felix@erbridge.co.uk>] - - *) New output format NSS in the sess_id command line tool. This allows - exporting the session id and the master key in NSS keylog format. - [Martin Kaiser <martin@kaiser.cx>] - - *) Harmonize version and its documentation. -f flag is used to display - compilation flags. - [mancha <mancha1@zoho.com>] - - *) Fix eckey_priv_encode so it immediately returns an error upon a failure - in i2d_ECPrivateKey. Thanks to Ted Unangst for feedback on this issue. - [mancha <mancha1@zoho.com>] - - *) Fix some double frees. These are not thought to be exploitable. - [mancha <mancha1@zoho.com>] - - *) A missing bounds check in the handling of the TLS heartbeat extension - can be used to reveal up to 64k of memory to a connected client or - server. - - Thanks for Neel Mehta of Google Security for discovering this bug and to - Adam Langley <agl@chromium.org> and Bodo Moeller <bmoeller@acm.org> for - preparing the fix (CVE-2014-0160) - [Adam Langley, Bodo Moeller] - - *) Fix for the attack described in the paper "Recovering OpenSSL - ECDSA Nonces Using the FLUSH+RELOAD Cache Side-channel Attack" - by Yuval Yarom and Naomi Benger. Details can be obtained from: - http://eprint.iacr.org/2014/140 - - Thanks to Yuval Yarom and Naomi Benger for discovering this - flaw and to Yuval Yarom for supplying a fix (CVE-2014-0076) - [Yuval Yarom and Naomi Benger] - - *) Use algorithm specific chains in SSL_CTX_use_certificate_chain_file(): - this fixes a limitation in previous versions of OpenSSL. - [Steve Henson] - - *) Experimental encrypt-then-mac support. - - Experimental support for encrypt then mac from - draft-gutmann-tls-encrypt-then-mac-02.txt - - To enable it set the appropriate extension number (0x42 for the test - server) using e.g. -DTLSEXT_TYPE_encrypt_then_mac=0x42 - - For non-compliant peers (i.e. just about everything) this should have no - effect. - - WARNING: EXPERIMENTAL, SUBJECT TO CHANGE. - - [Steve Henson] - - *) Add EVP support for key wrapping algorithms, to avoid problems with - existing code the flag EVP_CIPHER_CTX_WRAP_ALLOW has to be set in - the EVP_CIPHER_CTX or an error is returned. Add AES and DES3 wrap - algorithms and include tests cases. - [Steve Henson] - - *) Extend CMS code to support RSA-PSS signatures and RSA-OAEP for - enveloped data. - [Steve Henson] - - *) Extended RSA OAEP support via EVP_PKEY API. Options to specify digest, - MGF1 digest and OAEP label. - [Steve Henson] - - *) Make openssl verify return errors. - [Chris Palmer <palmer@google.com> and Ben Laurie] - - *) New function ASN1_TIME_diff to calculate the difference between two - ASN1_TIME structures or one structure and the current time. - [Steve Henson] - - *) Update fips_test_suite to support multiple command line options. New - test to induce all self test errors in sequence and check expected - failures. - [Steve Henson] - - *) Add FIPS_{rsa,dsa,ecdsa}_{sign,verify} functions which digest and - sign or verify all in one operation. - [Steve Henson] - - *) Add fips_algvs: a multicall fips utility incorporating all the algorithm - test programs and fips_test_suite. Includes functionality to parse - the minimal script output of fipsalgest.pl directly. - [Steve Henson] - - *) Add authorisation parameter to FIPS_module_mode_set(). - [Steve Henson] - - *) Add FIPS selftest for ECDH algorithm using P-224 and B-233 curves. - [Steve Henson] - - *) Use separate DRBG fields for internal and external flags. New function - FIPS_drbg_health_check() to perform on demand health checking. Add - generation tests to fips_test_suite with reduced health check interval to - demonstrate periodic health checking. Add "nodh" option to - fips_test_suite to skip very slow DH test. - [Steve Henson] - - *) New function FIPS_get_cipherbynid() to lookup FIPS supported ciphers - based on NID. - [Steve Henson] - - *) More extensive health check for DRBG checking many more failure modes. - New function FIPS_selftest_drbg_all() to handle every possible DRBG - combination: call this in fips_test_suite. - [Steve Henson] - - *) Add support for canonical generation of DSA parameter 'g'. See - FIPS 186-3 A.2.3. - - *) Add support for HMAC DRBG from SP800-90. Update DRBG algorithm test and - POST to handle HMAC cases. - [Steve Henson] - - *) Add functions FIPS_module_version() and FIPS_module_version_text() - to return numerical and string versions of the FIPS module number. - [Steve Henson] - - *) Rename FIPS_mode_set and FIPS_mode to FIPS_module_mode_set and - FIPS_module_mode. FIPS_mode and FIPS_mode_set will be implemented - outside the validated module in the FIPS capable OpenSSL. - [Steve Henson] - - *) Minor change to DRBG entropy callback semantics. In some cases - there is no multiple of the block length between min_len and - max_len. Allow the callback to return more than max_len bytes - of entropy but discard any extra: it is the callback's responsibility - to ensure that the extra data discarded does not impact the - requested amount of entropy. - [Steve Henson] - - *) Add PRNG security strength checks to RSA, DSA and ECDSA using - information in FIPS186-3, SP800-57 and SP800-131A. - [Steve Henson] - - *) CCM support via EVP. Interface is very similar to GCM case except we - must supply all data in one chunk (i.e. no update, final) and the - message length must be supplied if AAD is used. Add algorithm test - support. - [Steve Henson] - - *) Initial version of POST overhaul. Add POST callback to allow the status - of POST to be monitored and/or failures induced. Modify fips_test_suite - to use callback. Always run all selftests even if one fails. - [Steve Henson] - - *) XTS support including algorithm test driver in the fips_gcmtest program. - Note: this does increase the maximum key length from 32 to 64 bytes but - there should be no binary compatibility issues as existing applications - will never use XTS mode. - [Steve Henson] - - *) Extensive reorganisation of FIPS PRNG behaviour. Remove all dependencies - to OpenSSL RAND code and replace with a tiny FIPS RAND API which also - performs algorithm blocking for unapproved PRNG types. Also do not - set PRNG type in FIPS_mode_set(): leave this to the application. - Add default OpenSSL DRBG handling: sets up FIPS PRNG and seeds with - the standard OpenSSL PRNG: set additional data to a date time vector. - [Steve Henson] - - *) Rename old X9.31 PRNG functions of the form FIPS_rand* to FIPS_x931*. - This shouldn't present any incompatibility problems because applications - shouldn't be using these directly and any that are will need to rethink - anyway as the X9.31 PRNG is now deprecated by FIPS 140-2 - [Steve Henson] - - *) Extensive self tests and health checking required by SP800-90 DRBG. - Remove strength parameter from FIPS_drbg_instantiate and always - instantiate at maximum supported strength. - [Steve Henson] - - *) Add ECDH code to fips module and fips_ecdhvs for primitives only testing. - [Steve Henson] - - *) New algorithm test program fips_dhvs to handle DH primitives only testing. - [Steve Henson] - - *) New function DH_compute_key_padded() to compute a DH key and pad with - leading zeroes if needed: this complies with SP800-56A et al. - [Steve Henson] - - *) Initial implementation of SP800-90 DRBGs for Hash and CTR. Not used by - anything, incomplete, subject to change and largely untested at present. - [Steve Henson] - - *) Modify fipscanisteronly build option to only build the necessary object - files by filtering FIPS_EX_OBJ through a perl script in crypto/Makefile. - [Steve Henson] - - *) Add experimental option FIPSSYMS to give all symbols in - fipscanister.o and FIPS or fips prefix. This will avoid - conflicts with future versions of OpenSSL. Add perl script - util/fipsas.pl to preprocess assembly language source files - and rename any affected symbols. - [Steve Henson] - - *) Add selftest checks and algorithm block of non-fips algorithms in - FIPS mode. Remove DES2 from selftests. - [Steve Henson] - - *) Add ECDSA code to fips module. Add tiny fips_ecdsa_check to just - return internal method without any ENGINE dependencies. Add new - tiny fips sign and verify functions. - [Steve Henson] - - *) New build option no-ec2m to disable characteristic 2 code. - [Steve Henson] - - *) New build option "fipscanisteronly". This only builds fipscanister.o - and (currently) associated fips utilities. Uses the file Makefile.fips - instead of Makefile.org as the prototype. - [Steve Henson] - - *) Add some FIPS mode restrictions to GCM. Add internal IV generator. - Update fips_gcmtest to use IV generator. - [Steve Henson] - - *) Initial, experimental EVP support for AES-GCM. AAD can be input by - setting output buffer to NULL. The *Final function must be - called although it will not retrieve any additional data. The tag - can be set or retrieved with a ctrl. The IV length is by default 12 - bytes (96 bits) but can be set to an alternative value. If the IV - length exceeds the maximum IV length (currently 16 bytes) it cannot be - set before the key. - [Steve Henson] - - *) New flag in ciphers: EVP_CIPH_FLAG_CUSTOM_CIPHER. This means the - underlying do_cipher function handles all cipher semantics itself - including padding and finalisation. This is useful if (for example) - an ENGINE cipher handles block padding itself. The behaviour of - do_cipher is subtly changed if this flag is set: the return value - is the number of characters written to the output buffer (zero is - no longer an error code) or a negative error code. Also if the - input buffer is NULL and length 0 finalisation should be performed. - [Steve Henson] - - *) If a candidate issuer certificate is already part of the constructed - path ignore it: new debug notification X509_V_ERR_PATH_LOOP for this case. - [Steve Henson] - - *) Improve forward-security support: add functions - - void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx, int (*cb)(SSL *ssl, int is_forward_secure)) - void SSL_set_not_resumable_session_callback(SSL *ssl, int (*cb)(SSL *ssl, int is_forward_secure)) - - for use by SSL/TLS servers; the callback function will be called whenever a - new session is created, and gets to decide whether the session may be - cached to make it resumable (return 0) or not (return 1). (As by the - SSL/TLS protocol specifications, the session_id sent by the server will be - empty to indicate that the session is not resumable; also, the server will - not generate RFC 4507 (RFC 5077) session tickets.) - - A simple reasonable callback implementation is to return is_forward_secure. - This parameter will be set to 1 or 0 depending on the ciphersuite selected - by the SSL/TLS server library, indicating whether it can provide forward - security. - [Emilia Käsper <emilia.kasper@esat.kuleuven.be> (Google)] - - *) New -verify_name option in command line utilities to set verification - parameters by name. - [Steve Henson] - - *) Initial CMAC implementation. WARNING: EXPERIMENTAL, API MAY CHANGE. - Add CMAC pkey methods. - [Steve Henson] - - *) Experimental renegotiation in s_server -www mode. If the client - browses /reneg connection is renegotiated. If /renegcert it is - renegotiated requesting a certificate. - [Steve Henson] - - *) Add an "external" session cache for debugging purposes to s_server. This - should help trace issues which normally are only apparent in deployed - multi-process servers. - [Steve Henson] - - *) Extensive audit of libcrypto with DEBUG_UNUSED. Fix many cases where - return value is ignored. NB. The functions RAND_add(), RAND_seed(), - BIO_set_cipher() and some obscure PEM functions were changed so they - can now return an error. The RAND changes required a change to the - RAND_METHOD structure. - [Steve Henson] - - *) New macro __owur for "OpenSSL Warn Unused Result". This makes use of - a gcc attribute to warn if the result of a function is ignored. This - is enable if DEBUG_UNUSED is set. Add to several functions in evp.h - whose return value is often ignored. - [Steve Henson] - - *) New -noct, -requestct, -requirect and -ctlogfile options for s_client. - These allow SCTs (signed certificate timestamps) to be requested and - validated when establishing a connection. - [Rob Percival <robpercival@google.com>] - - Changes between 1.0.2g and 1.0.2h [3 May 2016] - - *) Prevent padding oracle in AES-NI CBC MAC check - - A MITM attacker can use a padding oracle attack to decrypt traffic - when the connection uses an AES CBC cipher and the server support - AES-NI. - - This issue was introduced as part of the fix for Lucky 13 padding - attack (CVE-2013-0169). The padding check was rewritten to be in - constant time by making sure that always the same bytes are read and - compared against either the MAC or padding bytes. But it no longer - checked that there was enough data to have both the MAC and padding - bytes. - - This issue was reported by Juraj Somorovsky using TLS-Attacker. - (CVE-2016-2107) - [Kurt Roeckx] - - *) Fix EVP_EncodeUpdate overflow - - An overflow can occur in the EVP_EncodeUpdate() function which is used for - Base64 encoding of binary data. If an attacker is able to supply very large - amounts of input data then a length check can overflow resulting in a heap - corruption. - - Internally to OpenSSL the EVP_EncodeUpdate() function is primarily used by - the PEM_write_bio* family of functions. These are mainly used within the - OpenSSL command line applications, so any application which processes data - from an untrusted source and outputs it as a PEM file should be considered - vulnerable to this issue. User applications that call these APIs directly - with large amounts of untrusted data may also be vulnerable. - - This issue was reported by Guido Vranken. - (CVE-2016-2105) - [Matt Caswell] - - *) Fix EVP_EncryptUpdate overflow - - An overflow can occur in the EVP_EncryptUpdate() function. If an attacker - is able to supply very large amounts of input data after a previous call to - EVP_EncryptUpdate() with a partial block then a length check can overflow - resulting in a heap corruption. Following an analysis of all OpenSSL - internal usage of the EVP_EncryptUpdate() function all usage is one of two - forms. The first form is where the EVP_EncryptUpdate() call is known to be - the first called function after an EVP_EncryptInit(), and therefore that - specific call must be safe. The second form is where the length passed to - EVP_EncryptUpdate() can be seen from the code to be some small value and - therefore there is no possibility of an overflow. Since all instances are - one of these two forms, it is believed that there can be no overflows in - internal code due to this problem. It should be noted that - EVP_DecryptUpdate() can call EVP_EncryptUpdate() in certain code paths. - Also EVP_CipherUpdate() is a synonym for EVP_EncryptUpdate(). All instances - of these calls have also been analysed too and it is believed there are no - instances in internal usage where an overflow could occur. - - This issue was reported by Guido Vranken. - (CVE-2016-2106) - [Matt Caswell] - - *) Prevent ASN.1 BIO excessive memory allocation - - When ASN.1 data is read from a BIO using functions such as d2i_CMS_bio() - a short invalid encoding can cause allocation of large amounts of memory - potentially consuming excessive resources or exhausting memory. - - Any application parsing untrusted data through d2i BIO functions is - affected. The memory based functions such as d2i_X509() are *not* affected. - Since the memory based functions are used by the TLS library, TLS - applications are not affected. - - This issue was reported by Brian Carpenter. - (CVE-2016-2109) - [Stephen Henson] - - *) EBCDIC overread - - ASN1 Strings that are over 1024 bytes can cause an overread in applications - using the X509_NAME_oneline() function on EBCDIC systems. This could result - in arbitrary stack data being returned in the buffer. - - This issue was reported by Guido Vranken. - (CVE-2016-2176) - [Matt Caswell] - - *) Modify behavior of ALPN to invoke callback after SNI/servername - callback, such that updates to the SSL_CTX affect ALPN. - [Todd Short] - - *) Remove LOW from the DEFAULT cipher list. This removes singles DES from the - default. - [Kurt Roeckx] - - *) Only remove the SSLv2 methods with the no-ssl2-method option. When the - methods are enabled and ssl2 is disabled the methods return NULL. - [Kurt Roeckx] - - Changes between 1.0.2f and 1.0.2g [1 Mar 2016] - - * Disable weak ciphers in SSLv3 and up in default builds of OpenSSL. - Builds that are not configured with "enable-weak-ssl-ciphers" will not - provide any "EXPORT" or "LOW" strength ciphers. - [Viktor Dukhovni] - - * Disable SSLv2 default build, default negotiation and weak ciphers. SSLv2 - is by default disabled at build-time. Builds that are not configured with - "enable-ssl2" will not support SSLv2. Even if "enable-ssl2" is used, - users who want to negotiate SSLv2 via the version-flexible SSLv23_method() - will need to explicitly call either of: - - SSL_CTX_clear_options(ctx, SSL_OP_NO_SSLv2); - or - SSL_clear_options(ssl, SSL_OP_NO_SSLv2); - - as appropriate. Even if either of those is used, or the application - explicitly uses the version-specific SSLv2_method() or its client and - server variants, SSLv2 ciphers vulnerable to exhaustive search key - recovery have been removed. Specifically, the SSLv2 40-bit EXPORT - ciphers, and SSLv2 56-bit DES are no longer available. - (CVE-2016-0800) - [Viktor Dukhovni] - - *) Fix a double-free in DSA code - - A double free bug was discovered when OpenSSL parses malformed DSA private - keys and could lead to a DoS attack or memory corruption for applications - that receive DSA private keys from untrusted sources. This scenario is - considered rare. - - This issue was reported to OpenSSL by Adam Langley(Google/BoringSSL) using - libFuzzer. - (CVE-2016-0705) - [Stephen Henson] - - *) Disable SRP fake user seed to address a server memory leak. - - Add a new method SRP_VBASE_get1_by_user that handles the seed properly. - - SRP_VBASE_get_by_user had inconsistent memory management behaviour. - In order to fix an unavoidable memory leak, SRP_VBASE_get_by_user - was changed to ignore the "fake user" SRP seed, even if the seed - is configured. - - Users should use SRP_VBASE_get1_by_user instead. Note that in - SRP_VBASE_get1_by_user, caller must free the returned value. Note - also that even though configuring the SRP seed attempts to hide - invalid usernames by continuing the handshake with fake - credentials, this behaviour is not constant time and no strong - guarantees are made that the handshake is indistinguishable from - that of a valid user. - (CVE-2016-0798) - [Emilia Käsper] - - *) Fix BN_hex2bn/BN_dec2bn NULL pointer deref/heap corruption - - In the BN_hex2bn function the number of hex digits is calculated using an - int value |i|. Later |bn_expand| is called with a value of |i * 4|. For - large values of |i| this can result in |bn_expand| not allocating any - memory because |i * 4| is negative. This can leave the internal BIGNUM data - field as NULL leading to a subsequent NULL ptr deref. For very large values - of |i|, the calculation |i * 4| could be a positive value smaller than |i|. - In this case memory is allocated to the internal BIGNUM data field, but it - is insufficiently sized leading to heap corruption. A similar issue exists - in BN_dec2bn. This could have security consequences if BN_hex2bn/BN_dec2bn - is ever called by user applications with very large untrusted hex/dec data. - This is anticipated to be a rare occurrence. - - All OpenSSL internal usage of these functions use data that is not expected - to be untrusted, e.g. config file data or application command line - arguments. If user developed applications generate config file data based - on untrusted data then it is possible that this could also lead to security - consequences. This is also anticipated to be rare. - - This issue was reported to OpenSSL by Guido Vranken. - (CVE-2016-0797) - [Matt Caswell] - - *) Fix memory issues in BIO_*printf functions - - The internal |fmtstr| function used in processing a "%s" format string in - the BIO_*printf functions could overflow while calculating the length of a - string and cause an OOB read when printing very long strings. - - Additionally the internal |doapr_outch| function can attempt to write to an - OOB memory location (at an offset from the NULL pointer) in the event of a - memory allocation failure. In 1.0.2 and below this could be caused where - the size of a buffer to be allocated is greater than INT_MAX. E.g. this - could be in processing a very long "%s" format string. Memory leaks can - also occur. - - The first issue may mask the second issue dependent on compiler behaviour. - These problems could enable attacks where large amounts of untrusted data - is passed to the BIO_*printf functions. If applications use these functions - in this way then they could be vulnerable. OpenSSL itself uses these - functions when printing out human-readable dumps of ASN.1 data. Therefore - applications that print this data could be vulnerable if the data is from - untrusted sources. OpenSSL command line applications could also be - vulnerable where they print out ASN.1 data, or if untrusted data is passed - as command line arguments. - - Libssl is not considered directly vulnerable. Additionally certificates etc - received via remote connections via libssl are also unlikely to be able to - trigger these issues because of message size limits enforced within libssl. - - This issue was reported to OpenSSL Guido Vranken. - (CVE-2016-0799) - [Matt Caswell] - - *) Side channel attack on modular exponentiation - - A side-channel attack was found which makes use of cache-bank conflicts on - the Intel Sandy-Bridge microarchitecture which could lead to the recovery - of RSA keys. The ability to exploit this issue is limited as it relies on - an attacker who has control of code in a thread running on the same - hyper-threaded core as the victim thread which is performing decryptions. - - This issue was reported to OpenSSL by Yuval Yarom, The University of - Adelaide and NICTA, Daniel Genkin, Technion and Tel Aviv University, and - Nadia Heninger, University of Pennsylvania with more information at - http://cachebleed.info. - (CVE-2016-0702) - [Andy Polyakov] - - *) Change the req app to generate a 2048-bit RSA/DSA key by default, - if no keysize is specified with default_bits. This fixes an - omission in an earlier change that changed all RSA/DSA key generation - apps to use 2048 bits by default. - [Emilia Käsper] - - Changes between 1.0.2e and 1.0.2f [28 Jan 2016] - *) DH small subgroups - - Historically OpenSSL only ever generated DH parameters based on "safe" - primes. More recently (in version 1.0.2) support was provided for - generating X9.42 style parameter files such as those required for RFC 5114 - support. The primes used in such files may not be "safe". Where an - application is using DH configured with parameters based on primes that are - not "safe" then an attacker could use this fact to find a peer's private - DH exponent. This attack requires that the attacker complete multiple - handshakes in which the peer uses the same private DH exponent. For example - this could be used to discover a TLS server's private DH exponent if it's - reusing the private DH exponent or it's using a static DH ciphersuite. - - OpenSSL provides the option SSL_OP_SINGLE_DH_USE for ephemeral DH (DHE) in - TLS. It is not on by default. If the option is not set then the server - reuses the same private DH exponent for the life of the server process and - would be vulnerable to this attack. It is believed that many popular - applications do set this option and would therefore not be at risk. - - The fix for this issue adds an additional check where a "q" parameter is - available (as is the case in X9.42 based parameters). This detects the - only known attack, and is the only possible defense for static DH - ciphersuites. This could have some performance impact. - - Additionally the SSL_OP_SINGLE_DH_USE option has been switched on by - default and cannot be disabled. This could have some performance impact. - - This issue was reported to OpenSSL by Antonio Sanso (Adobe). - (CVE-2016-0701) - [Matt Caswell] - - *) SSLv2 doesn't block disabled ciphers - - A malicious client can negotiate SSLv2 ciphers that have been disabled on - the server and complete SSLv2 handshakes even if all SSLv2 ciphers have - been disabled, provided that the SSLv2 protocol was not also disabled via - SSL_OP_NO_SSLv2. - - This issue was reported to OpenSSL on 26th December 2015 by Nimrod Aviram - and Sebastian Schinzel. - (CVE-2015-3197) - [Viktor Dukhovni] - - Changes between 1.0.2d and 1.0.2e [3 Dec 2015] - - *) BN_mod_exp may produce incorrect results on x86_64 - - There is a carry propagating bug in the x86_64 Montgomery squaring - procedure. No EC algorithms are affected. Analysis suggests that attacks - against RSA and DSA as a result of this defect would be very difficult to - perform and are not believed likely. Attacks against DH are considered just - feasible (although very difficult) because most of the work necessary to - deduce information about a private key may be performed offline. The amount - of resources required for such an attack would be very significant and - likely only accessible to a limited number of attackers. An attacker would - additionally need online access to an unpatched system using the target - private key in a scenario with persistent DH parameters and a private - key that is shared between multiple clients. For example this can occur by - default in OpenSSL DHE based SSL/TLS ciphersuites. - - This issue was reported to OpenSSL by Hanno Böck. - (CVE-2015-3193) - [Andy Polyakov] - - *) Certificate verify crash with missing PSS parameter - - The signature verification routines will crash with a NULL pointer - dereference if presented with an ASN.1 signature using the RSA PSS - algorithm and absent mask generation function parameter. Since these - routines are used to verify certificate signature algorithms this can be - used to crash any certificate verification operation and exploited in a - DoS attack. Any application which performs certificate verification is - vulnerable including OpenSSL clients and servers which enable client - authentication. - - This issue was reported to OpenSSL by Loïc Jonas Etienne (Qnective AG). - (CVE-2015-3194) - [Stephen Henson] - - *) X509_ATTRIBUTE memory leak - - When presented with a malformed X509_ATTRIBUTE structure OpenSSL will leak - memory. This structure is used by the PKCS#7 and CMS routines so any - application which reads PKCS#7 or CMS data from untrusted sources is - affected. SSL/TLS is not affected. - - This issue was reported to OpenSSL by Adam Langley (Google/BoringSSL) using - libFuzzer. - (CVE-2015-3195) - [Stephen Henson] - - *) Rewrite EVP_DecodeUpdate (base64 decoding) to fix several bugs. - This changes the decoding behaviour for some invalid messages, - though the change is mostly in the more lenient direction, and - legacy behaviour is preserved as much as possible. - [Emilia Käsper] - - *) In DSA_generate_parameters_ex, if the provided seed is too short, - return an error - [Rich Salz and Ismo Puustinen <ismo.puustinen@intel.com>] - - Changes between 1.0.2c and 1.0.2d [9 Jul 2015] - - *) Alternate chains certificate forgery - - During certificate verification, OpenSSL will attempt to find an - alternative certificate chain if the first attempt to build such a chain - fails. An error in the implementation of this logic can mean that an - attacker could cause certain checks on untrusted certificates to be - bypassed, such as the CA flag, enabling them to use a valid leaf - certificate to act as a CA and "issue" an invalid certificate. - - This issue was reported to OpenSSL by Adam Langley/David Benjamin - (Google/BoringSSL). - [Matt Caswell] - - Changes between 1.0.2b and 1.0.2c [12 Jun 2015] - - *) Fix HMAC ABI incompatibility. The previous version introduced an ABI - incompatibility in the handling of HMAC. The previous ABI has now been - restored. - [Matt Caswell] - - Changes between 1.0.2a and 1.0.2b [11 Jun 2015] - - *) Malformed ECParameters causes infinite loop - - When processing an ECParameters structure OpenSSL enters an infinite loop - if the curve specified is over a specially malformed binary polynomial - field. - - This can be used to perform denial of service against any - system which processes public keys, certificate requests or - certificates. This includes TLS clients and TLS servers with - client authentication enabled. - - This issue was reported to OpenSSL by Joseph Barr-Pixton. - (CVE-2015-1788) - [Andy Polyakov] - - *) Exploitable out-of-bounds read in X509_cmp_time - - X509_cmp_time does not properly check the length of the ASN1_TIME - string and can read a few bytes out of bounds. In addition, - X509_cmp_time accepts an arbitrary number of fractional seconds in the - time string. - - An attacker can use this to craft malformed certificates and CRLs of - various sizes and potentially cause a segmentation fault, resulting in - a DoS on applications that verify certificates or CRLs. TLS clients - that verify CRLs are affected. TLS clients and servers with client - authentication enabled may be affected if they use custom verification - callbacks. - - This issue was reported to OpenSSL by Robert Swiecki (Google), and - independently by Hanno Böck. - (CVE-2015-1789) - [Emilia Käsper] - - *) PKCS7 crash with missing EnvelopedContent - - The PKCS#7 parsing code does not handle missing inner EncryptedContent - correctly. An attacker can craft malformed ASN.1-encoded PKCS#7 blobs - with missing content and trigger a NULL pointer dereference on parsing. - - Applications that decrypt PKCS#7 data or otherwise parse PKCS#7 - structures from untrusted sources are affected. OpenSSL clients and - servers are not affected. - - This issue was reported to OpenSSL by Michal Zalewski (Google). - (CVE-2015-1790) - [Emilia Käsper] - - *) CMS verify infinite loop with unknown hash function - - When verifying a signedData message the CMS code can enter an infinite loop - if presented with an unknown hash function OID. This can be used to perform - denial of service against any system which verifies signedData messages using - the CMS code. - This issue was reported to OpenSSL by Johannes Bauer. - (CVE-2015-1792) - [Stephen Henson] - - *) Race condition handling NewSessionTicket - - If a NewSessionTicket is received by a multi-threaded client when attempting to - reuse a previous ticket then a race condition can occur potentially leading to - a double free of the ticket data. - (CVE-2015-1791) - [Matt Caswell] - - *) Only support 256-bit or stronger elliptic curves with the - 'ecdh_auto' setting (server) or by default (client). Of supported - curves, prefer P-256 (both). - [Emilia Kasper] - - Changes between 1.0.2 and 1.0.2a [19 Mar 2015] - - *) ClientHello sigalgs DoS fix - - If a client connects to an OpenSSL 1.0.2 server and renegotiates with an - invalid signature algorithms extension a NULL pointer dereference will - occur. This can be exploited in a DoS attack against the server. - - This issue was was reported to OpenSSL by David Ramos of Stanford - University. - (CVE-2015-0291) - [Stephen Henson and Matt Caswell] - - *) Multiblock corrupted pointer fix - - OpenSSL 1.0.2 introduced the "multiblock" performance improvement. This - feature only applies on 64 bit x86 architecture platforms that support AES - NI instructions. A defect in the implementation of "multiblock" can cause - OpenSSL's internal write buffer to become incorrectly set to NULL when - using non-blocking IO. Typically, when the user application is using a - socket BIO for writing, this will only result in a failed connection. - However if some other BIO is used then it is likely that a segmentation - fault will be triggered, thus enabling a potential DoS attack. - - This issue was reported to OpenSSL by Daniel Danner and Rainer Mueller. - (CVE-2015-0290) - [Matt Caswell] - - *) Segmentation fault in DTLSv1_listen fix - - The DTLSv1_listen function is intended to be stateless and processes the - initial ClientHello from many peers. It is common for user code to loop - over the call to DTLSv1_listen until a valid ClientHello is received with - an associated cookie. A defect in the implementation of DTLSv1_listen means - that state is preserved in the SSL object from one invocation to the next - that can lead to a segmentation fault. Errors processing the initial - ClientHello can trigger this scenario. An example of such an error could be - that a DTLS1.0 only client is attempting to connect to a DTLS1.2 only - server. - - This issue was reported to OpenSSL by Per Allansson. - (CVE-2015-0207) - [Matt Caswell] - - *) Segmentation fault in ASN1_TYPE_cmp fix - - The function ASN1_TYPE_cmp will crash with an invalid read if an attempt is - made to compare ASN.1 boolean types. Since ASN1_TYPE_cmp is used to check - certificate signature algorithm consistency this can be used to crash any - certificate verification operation and exploited in a DoS attack. Any - application which performs certificate verification is vulnerable including - OpenSSL clients and servers which enable client authentication. - (CVE-2015-0286) - [Stephen Henson] - - *) Segmentation fault for invalid PSS parameters fix - - The signature verification routines will crash with a NULL pointer - dereference if presented with an ASN.1 signature using the RSA PSS - algorithm and invalid parameters. Since these routines are used to verify - certificate signature algorithms this can be used to crash any - certificate verification operation and exploited in a DoS attack. Any - application which performs certificate verification is vulnerable including - OpenSSL clients and servers which enable client authentication. - - This issue was was reported to OpenSSL by Brian Carpenter. - (CVE-2015-0208) - [Stephen Henson] - - *) ASN.1 structure reuse memory corruption fix - - Reusing a structure in ASN.1 parsing may allow an attacker to cause - memory corruption via an invalid write. Such reuse is and has been - strongly discouraged and is believed to be rare. - - Applications that parse structures containing CHOICE or ANY DEFINED BY - components may be affected. Certificate parsing (d2i_X509 and related - functions) are however not affected. OpenSSL clients and servers are - not affected. - (CVE-2015-0287) - [Stephen Henson] - - *) PKCS7 NULL pointer dereferences fix - - The PKCS#7 parsing code does not handle missing outer ContentInfo - correctly. An attacker can craft malformed ASN.1-encoded PKCS#7 blobs with - missing content and trigger a NULL pointer dereference on parsing. - - Applications that verify PKCS#7 signatures, decrypt PKCS#7 data or - otherwise parse PKCS#7 structures from untrusted sources are - affected. OpenSSL clients and servers are not affected. - - This issue was reported to OpenSSL by Michal Zalewski (Google). - (CVE-2015-0289) - [Emilia Käsper] - - *) DoS via reachable assert in SSLv2 servers fix - - A malicious client can trigger an OPENSSL_assert (i.e., an abort) in - servers that both support SSLv2 and enable export cipher suites by sending - a specially crafted SSLv2 CLIENT-MASTER-KEY message. - - This issue was discovered by Sean Burford (Google) and Emilia Käsper - (OpenSSL development team). - (CVE-2015-0293) - [Emilia Käsper] - - *) Empty CKE with client auth and DHE fix - - If client auth is used then a server can seg fault in the event of a DHE - ciphersuite being selected and a zero length ClientKeyExchange message - being sent by the client. This could be exploited in a DoS attack. - (CVE-2015-1787) - [Matt Caswell] - - *) Handshake with unseeded PRNG fix - - Under certain conditions an OpenSSL 1.0.2 client can complete a handshake - with an unseeded PRNG. The conditions are: - - The client is on a platform where the PRNG has not been seeded - automatically, and the user has not seeded manually - - A protocol specific client method version has been used (i.e. not - SSL_client_methodv23) - - A ciphersuite is used that does not require additional random data from - the PRNG beyond the initial ClientHello client random (e.g. PSK-RC4-SHA). - - If the handshake succeeds then the client random that has been used will - have been generated from a PRNG with insufficient entropy and therefore the - output may be predictable. - - For example using the following command with an unseeded openssl will - succeed on an unpatched platform: - - openssl s_client -psk 1a2b3c4d -tls1_2 -cipher PSK-RC4-SHA - (CVE-2015-0285) - [Matt Caswell] - - *) Use After Free following d2i_ECPrivatekey error fix - - A malformed EC private key file consumed via the d2i_ECPrivateKey function - could cause a use after free condition. This, in turn, could cause a double - free in several private key parsing functions (such as d2i_PrivateKey - or EVP_PKCS82PKEY) and could lead to a DoS attack or memory corruption - for applications that receive EC private keys from untrusted - sources. This scenario is considered rare. - - This issue was discovered by the BoringSSL project and fixed in their - commit 517073cd4b. - (CVE-2015-0209) - [Matt Caswell] - - *) X509_to_X509_REQ NULL pointer deref fix - - The function X509_to_X509_REQ will crash with a NULL pointer dereference if - the certificate key is invalid. This function is rarely used in practice. - - This issue was discovered by Brian Carpenter. - (CVE-2015-0288) - [Stephen Henson] - - *) Removed the export ciphers from the DEFAULT ciphers - [Kurt Roeckx] - - Changes between 1.0.1l and 1.0.2 [22 Jan 2015] - - *) Facilitate "universal" ARM builds targeting range of ARM ISAs, e.g. - ARMv5 through ARMv8, as opposite to "locking" it to single one. - So far those who have to target multiple platforms would compromise - and argue that binary targeting say ARMv5 would still execute on - ARMv8. "Universal" build resolves this compromise by providing - near-optimal performance even on newer platforms. - [Andy Polyakov] - - *) Accelerated NIST P-256 elliptic curve implementation for x86_64 - (other platforms pending). - [Shay Gueron & Vlad Krasnov (Intel Corp), Andy Polyakov] - - *) Add support for the SignedCertificateTimestampList certificate and - OCSP response extensions from RFC6962. - [Rob Stradling] - - *) Fix ec_GFp_simple_points_make_affine (thus, EC_POINTs_mul etc.) - for corner cases. (Certain input points at infinity could lead to - bogus results, with non-infinity inputs mapped to infinity too.) - [Bodo Moeller] - - *) Initial support for PowerISA 2.0.7, first implemented in POWER8. - This covers AES, SHA256/512 and GHASH. "Initial" means that most - common cases are optimized and there still is room for further - improvements. Vector Permutation AES for Altivec is also added. - [Andy Polyakov] - - *) Add support for little-endian ppc64 Linux target. - [Marcelo Cerri (IBM)] - - *) Initial support for AMRv8 ISA crypto extensions. This covers AES, - SHA1, SHA256 and GHASH. "Initial" means that most common cases - are optimized and there still is room for further improvements. - Both 32- and 64-bit modes are supported. - [Andy Polyakov, Ard Biesheuvel (Linaro)] - - *) Improved ARMv7 NEON support. - [Andy Polyakov] - - *) Support for SPARC Architecture 2011 crypto extensions, first - implemented in SPARC T4. This covers AES, DES, Camellia, SHA1, - SHA256/512, MD5, GHASH and modular exponentiation. - [Andy Polyakov, David Miller] - - *) Accelerated modular exponentiation for Intel processors, a.k.a. - RSAZ. - [Shay Gueron & Vlad Krasnov (Intel Corp)] - - *) Support for new and upcoming Intel processors, including AVX2, - BMI and SHA ISA extensions. This includes additional "stitched" - implementations, AESNI-SHA256 and GCM, and multi-buffer support - for TLS encrypt. - - This work was sponsored by Intel Corp. - [Andy Polyakov] - - *) Support for DTLS 1.2. This adds two sets of DTLS methods: DTLS_*_method() - supports both DTLS 1.2 and 1.0 and should use whatever version the peer - supports and DTLSv1_2_*_method() which supports DTLS 1.2 only. - [Steve Henson] - - *) Use algorithm specific chains in SSL_CTX_use_certificate_chain_file(): - this fixes a limitation in previous versions of OpenSSL. - [Steve Henson] - - *) Extended RSA OAEP support via EVP_PKEY API. Options to specify digest, - MGF1 digest and OAEP label. - [Steve Henson] - - *) Add EVP support for key wrapping algorithms, to avoid problems with - existing code the flag EVP_CIPHER_CTX_WRAP_ALLOW has to be set in - the EVP_CIPHER_CTX or an error is returned. Add AES and DES3 wrap - algorithms and include tests cases. - [Steve Henson] - - *) Add functions to allocate and set the fields of an ECDSA_METHOD - structure. - [Douglas E. Engert, Steve Henson] - - *) New functions OPENSSL_gmtime_diff and ASN1_TIME_diff to find the - difference in days and seconds between two tm or ASN1_TIME structures. - [Steve Henson] - - *) Add -rev test option to s_server to just reverse order of characters - received by client and send back to server. Also prints an abbreviated - summary of the connection parameters. - [Steve Henson] - - *) New option -brief for s_client and s_server to print out a brief summary - of connection parameters. - [Steve Henson] - - *) Add callbacks for arbitrary TLS extensions. - [Trevor Perrin <trevp@trevp.net> and Ben Laurie] - - *) New option -crl_download in several openssl utilities to download CRLs - from CRLDP extension in certificates. - [Steve Henson] - - *) New options -CRL and -CRLform for s_client and s_server for CRLs. - [Steve Henson] - - *) New function X509_CRL_diff to generate a delta CRL from the difference - of two full CRLs. Add support to "crl" utility. - [Steve Henson] - - *) New functions to set lookup_crls function and to retrieve - X509_STORE from X509_STORE_CTX. - [Steve Henson] - - *) Print out deprecated issuer and subject unique ID fields in - certificates. - [Steve Henson] - - *) Extend OCSP I/O functions so they can be used for simple general purpose - HTTP as well as OCSP. New wrapper function which can be used to download - CRLs using the OCSP API. - [Steve Henson] - - *) Delegate command line handling in s_client/s_server to SSL_CONF APIs. - [Steve Henson] - - *) SSL_CONF* functions. These provide a common framework for application - configuration using configuration files or command lines. - [Steve Henson] - - *) SSL/TLS tracing code. This parses out SSL/TLS records using the - message callback and prints the results. Needs compile time option - "enable-ssl-trace". New options to s_client and s_server to enable - tracing. - [Steve Henson] - - *) New ctrl and macro to retrieve supported points extensions. - Print out extension in s_server and s_client. - [Steve Henson] - - *) New functions to retrieve certificate signature and signature - OID NID. - [Steve Henson] - - *) Add functions to retrieve and manipulate the raw cipherlist sent by a - client to OpenSSL. - [Steve Henson] - - *) New Suite B modes for TLS code. These use and enforce the requirements - of RFC6460: restrict ciphersuites, only permit Suite B algorithms and - only use Suite B curves. The Suite B modes can be set by using the - strings "SUITEB128", "SUITEB192" or "SUITEB128ONLY" for the cipherstring. - [Steve Henson] - - *) New chain verification flags for Suite B levels of security. Check - algorithms are acceptable when flags are set in X509_verify_cert. - [Steve Henson] - - *) Make tls1_check_chain return a set of flags indicating checks passed - by a certificate chain. Add additional tests to handle client - certificates: checks for matching certificate type and issuer name - comparison. - [Steve Henson] - - *) If an attempt is made to use a signature algorithm not in the peer - preference list abort the handshake. If client has no suitable - signature algorithms in response to a certificate request do not - use the certificate. - [Steve Henson] - - *) If server EC tmp key is not in client preference list abort handshake. - [Steve Henson] - - *) Add support for certificate stores in CERT structure. This makes it - possible to have different stores per SSL structure or one store in - the parent SSL_CTX. Include distinct stores for certificate chain - verification and chain building. New ctrl SSL_CTRL_BUILD_CERT_CHAIN - to build and store a certificate chain in CERT structure: returning - an error if the chain cannot be built: this will allow applications - to test if a chain is correctly configured. - - Note: if the CERT based stores are not set then the parent SSL_CTX - store is used to retain compatibility with existing behaviour. - - [Steve Henson] - - *) New function ssl_set_client_disabled to set a ciphersuite disabled - mask based on the current session, check mask when sending client - hello and checking the requested ciphersuite. - [Steve Henson] - - *) New ctrls to retrieve and set certificate types in a certificate - request message. Print out received values in s_client. If certificate - types is not set with custom values set sensible values based on - supported signature algorithms. - [Steve Henson] - - *) Support for distinct client and server supported signature algorithms. - [Steve Henson] - - *) Add certificate callback. If set this is called whenever a certificate - is required by client or server. An application can decide which - certificate chain to present based on arbitrary criteria: for example - supported signature algorithms. Add very simple example to s_server. - This fixes many of the problems and restrictions of the existing client - certificate callback: for example you can now clear an existing - certificate and specify the whole chain. - [Steve Henson] - - *) Add new "valid_flags" field to CERT_PKEY structure which determines what - the certificate can be used for (if anything). Set valid_flags field - in new tls1_check_chain function. Simplify ssl_set_cert_masks which used - to have similar checks in it. - - Add new "cert_flags" field to CERT structure and include a "strict mode". - This enforces some TLS certificate requirements (such as only permitting - certificate signature algorithms contained in the supported algorithms - extension) which some implementations ignore: this option should be used - with caution as it could cause interoperability issues. - [Steve Henson] - - *) Update and tidy signature algorithm extension processing. Work out - shared signature algorithms based on preferences and peer algorithms - and print them out in s_client and s_server. Abort handshake if no - shared signature algorithms. - [Steve Henson] - - *) Add new functions to allow customised supported signature algorithms - for SSL and SSL_CTX structures. Add options to s_client and s_server - to support them. - [Steve Henson] - - *) New function SSL_certs_clear() to delete all references to certificates - from an SSL structure. Before this once a certificate had been added - it couldn't be removed. - [Steve Henson] - - *) Integrate hostname, email address and IP address checking with certificate - verification. New verify options supporting checking in openssl utility. - [Steve Henson] - - *) Fixes and wildcard matching support to hostname and email checking - functions. Add manual page. - [Florian Weimer (Red Hat Product Security Team)] - - *) New functions to check a hostname email or IP address against a - certificate. Add options x509 utility to print results of checks against - a certificate. - [Steve Henson] - - *) Fix OCSP checking. - [Rob Stradling <rob.stradling@comodo.com> and Ben Laurie] - - *) Initial experimental support for explicitly trusted non-root CAs. - OpenSSL still tries to build a complete chain to a root but if an - intermediate CA has a trust setting included that is used. The first - setting is used: whether to trust (e.g., -addtrust option to the x509 - utility) or reject. - [Steve Henson] - - *) Add -trusted_first option which attempts to find certificates in the - trusted store even if an untrusted chain is also supplied. - [Steve Henson] - - *) MIPS assembly pack updates: support for MIPS32r2 and SmartMIPS ASE, - platform support for Linux and Android. - [Andy Polyakov] - - *) Support for linux-x32, ILP32 environment in x86_64 framework. - [Andy Polyakov] - - *) Experimental multi-implementation support for FIPS capable OpenSSL. - When in FIPS mode the approved implementations are used as normal, - when not in FIPS mode the internal unapproved versions are used instead. - This means that the FIPS capable OpenSSL isn't forced to use the - (often lower performance) FIPS implementations outside FIPS mode. - [Steve Henson] - - *) Transparently support X9.42 DH parameters when calling - PEM_read_bio_DHparameters. This means existing applications can handle - the new parameter format automatically. - [Steve Henson] - - *) Initial experimental support for X9.42 DH parameter format: mainly - to support use of 'q' parameter for RFC5114 parameters. - [Steve Henson] - - *) Add DH parameters from RFC5114 including test data to dhtest. - [Steve Henson] - - *) Support for automatic EC temporary key parameter selection. If enabled - the most preferred EC parameters are automatically used instead of - hardcoded fixed parameters. Now a server just has to call: - SSL_CTX_set_ecdh_auto(ctx, 1) and the server will automatically - support ECDH and use the most appropriate parameters. - [Steve Henson] - - *) Enhance and tidy EC curve and point format TLS extension code. Use - static structures instead of allocation if default values are used. - New ctrls to set curves we wish to support and to retrieve shared curves. - Print out shared curves in s_server. New options to s_server and s_client - to set list of supported curves. - [Steve Henson] - - *) New ctrls to retrieve supported signature algorithms and - supported curve values as an array of NIDs. Extend openssl utility - to print out received values. - [Steve Henson] - - *) Add new APIs EC_curve_nist2nid and EC_curve_nid2nist which convert - between NIDs and the more common NIST names such as "P-256". Enhance - ecparam utility and ECC method to recognise the NIST names for curves. - [Steve Henson] - - *) Enhance SSL/TLS certificate chain handling to support different - chains for each certificate instead of one chain in the parent SSL_CTX. - [Steve Henson] - - *) Support for fixed DH ciphersuite client authentication: where both - server and client use DH certificates with common parameters. - [Steve Henson] - - *) Support for fixed DH ciphersuites: those requiring DH server - certificates. - [Steve Henson] - - *) New function i2d_re_X509_tbs for re-encoding the TBS portion of - the certificate. - Note: Related 1.0.2-beta specific macros X509_get_cert_info, - X509_CINF_set_modified, X509_CINF_get_issuer, X509_CINF_get_extensions and - X509_CINF_get_signature were reverted post internal team review. - - Changes between 1.0.1k and 1.0.1l [15 Jan 2015] - - *) Build fixes for the Windows and OpenVMS platforms - [Matt Caswell and Richard Levitte] - - Changes between 1.0.1j and 1.0.1k [8 Jan 2015] - - *) Fix DTLS segmentation fault in dtls1_get_record. A carefully crafted DTLS - message can cause a segmentation fault in OpenSSL due to a NULL pointer - dereference. This could lead to a Denial Of Service attack. Thanks to - Markus Stenberg of Cisco Systems, Inc. for reporting this issue. - (CVE-2014-3571) - [Steve Henson] - - *) Fix DTLS memory leak in dtls1_buffer_record. A memory leak can occur in the - dtls1_buffer_record function under certain conditions. In particular this - could occur if an attacker sent repeated DTLS records with the same - sequence number but for the next epoch. The memory leak could be exploited - by an attacker in a Denial of Service attack through memory exhaustion. - Thanks to Chris Mueller for reporting this issue. - (CVE-2015-0206) - [Matt Caswell] - - *) Fix issue where no-ssl3 configuration sets method to NULL. When openssl is - built with the no-ssl3 option and a SSL v3 ClientHello is received the ssl - method would be set to NULL which could later result in a NULL pointer - dereference. Thanks to Frank Schmirler for reporting this issue. - (CVE-2014-3569) - [Kurt Roeckx] - - *) Abort handshake if server key exchange message is omitted for ephemeral - ECDH ciphersuites. - - Thanks to Karthikeyan Bhargavan of the PROSECCO team at INRIA for - reporting this issue. - (CVE-2014-3572) - [Steve Henson] - - *) Remove non-export ephemeral RSA code on client and server. This code - violated the TLS standard by allowing the use of temporary RSA keys in - non-export ciphersuites and could be used by a server to effectively - downgrade the RSA key length used to a value smaller than the server - certificate. Thanks for Karthikeyan Bhargavan of the PROSECCO team at - INRIA or reporting this issue. - (CVE-2015-0204) - [Steve Henson] - - *) Fixed issue where DH client certificates are accepted without verification. - An OpenSSL server will accept a DH certificate for client authentication - without the certificate verify message. This effectively allows a client to - authenticate without the use of a private key. This only affects servers - which trust a client certificate authority which issues certificates - containing DH keys: these are extremely rare and hardly ever encountered. - Thanks for Karthikeyan Bhargavan of the PROSECCO team at INRIA or reporting - this issue. - (CVE-2015-0205) - [Steve Henson] - - *) Ensure that the session ID context of an SSL is updated when its - SSL_CTX is updated via SSL_set_SSL_CTX. - - The session ID context is typically set from the parent SSL_CTX, - and can vary with the CTX. - [Adam Langley] - - *) Fix various certificate fingerprint issues. - - By using non-DER or invalid encodings outside the signed portion of a - certificate the fingerprint can be changed without breaking the signature. - Although no details of the signed portion of the certificate can be changed - this can cause problems with some applications: e.g. those using the - certificate fingerprint for blacklists. - - 1. Reject signatures with non zero unused bits. - - If the BIT STRING containing the signature has non zero unused bits reject - the signature. All current signature algorithms require zero unused bits. - - 2. Check certificate algorithm consistency. - - Check the AlgorithmIdentifier inside TBS matches the one in the - certificate signature. NB: this will result in signature failure - errors for some broken certificates. - - Thanks to Konrad Kraszewski from Google for reporting this issue. - - 3. Check DSA/ECDSA signatures use DER. - - Re-encode DSA/ECDSA signatures and compare with the original received - signature. Return an error if there is a mismatch. - - This will reject various cases including garbage after signature - (thanks to Antti Karjalainen and Tuomo Untinen from the Codenomicon CROSS - program for discovering this case) and use of BER or invalid ASN.1 INTEGERs - (negative or with leading zeroes). - - Further analysis was conducted and fixes were developed by Stephen Henson - of the OpenSSL core team. - - (CVE-2014-8275) - [Steve Henson] - - *) Correct Bignum squaring. Bignum squaring (BN_sqr) may produce incorrect - results on some platforms, including x86_64. This bug occurs at random - with a very low probability, and is not known to be exploitable in any - way, though its exact impact is difficult to determine. Thanks to Pieter - Wuille (Blockstream) who reported this issue and also suggested an initial - fix. Further analysis was conducted by the OpenSSL development team and - Adam Langley of Google. The final fix was developed by Andy Polyakov of - the OpenSSL core team. - (CVE-2014-3570) - [Andy Polyakov] - - *) Do not resume sessions on the server if the negotiated protocol - version does not match the session's version. Resuming with a different - version, while not strictly forbidden by the RFC, is of questionable - sanity and breaks all known clients. - [David Benjamin, Emilia Käsper] - - *) Tighten handling of the ChangeCipherSpec (CCS) message: reject - early CCS messages during renegotiation. (Note that because - renegotiation is encrypted, this early CCS was not exploitable.) - [Emilia Käsper] - - *) Tighten client-side session ticket handling during renegotiation: - ensure that the client only accepts a session ticket if the server sends - the extension anew in the ServerHello. Previously, a TLS client would - reuse the old extension state and thus accept a session ticket if one was - announced in the initial ServerHello. - - Similarly, ensure that the client requires a session ticket if one - was advertised in the ServerHello. Previously, a TLS client would - ignore a missing NewSessionTicket message. - [Emilia Käsper] - - Changes between 1.0.1i and 1.0.1j [15 Oct 2014] - - *) SRTP Memory Leak. - - A flaw in the DTLS SRTP extension parsing code allows an attacker, who - sends a carefully crafted handshake message, to cause OpenSSL to fail - to free up to 64k of memory causing a memory leak. This could be - exploited in a Denial Of Service attack. This issue affects OpenSSL - 1.0.1 server implementations for both SSL/TLS and DTLS regardless of - whether SRTP is used or configured. Implementations of OpenSSL that - have been compiled with OPENSSL_NO_SRTP defined are not affected. - - The fix was developed by the OpenSSL team. - (CVE-2014-3513) - [OpenSSL team] - - *) Session Ticket Memory Leak. - - When an OpenSSL SSL/TLS/DTLS server receives a session ticket the - integrity of that ticket is first verified. In the event of a session - ticket integrity check failing, OpenSSL will fail to free memory - causing a memory leak. By sending a large number of invalid session - tickets an attacker could exploit this issue in a Denial Of Service - attack. - (CVE-2014-3567) - [Steve Henson] - - *) Build option no-ssl3 is incomplete. - - When OpenSSL is configured with "no-ssl3" as a build option, servers - could accept and complete a SSL 3.0 handshake, and clients could be - configured to send them. - (CVE-2014-3568) - [Akamai and the OpenSSL team] - - *) Add support for TLS_FALLBACK_SCSV. - Client applications doing fallback retries should call - SSL_set_mode(s, SSL_MODE_SEND_FALLBACK_SCSV). - (CVE-2014-3566) - [Adam Langley, Bodo Moeller] - - *) Add additional DigestInfo checks. - - Re-encode DigestInto in DER and check against the original when - verifying RSA signature: this will reject any improperly encoded - DigestInfo structures. - - Note: this is a precautionary measure and no attacks are currently known. - - [Steve Henson] - - Changes between 1.0.1h and 1.0.1i [6 Aug 2014] - - *) Fix SRP buffer overrun vulnerability. Invalid parameters passed to the - SRP code can be overrun an internal buffer. Add sanity check that - g, A, B < N to SRP code. - - Thanks to Sean Devlin and Watson Ladd of Cryptography Services, NCC - Group for discovering this issue. - (CVE-2014-3512) - [Steve Henson] - - *) A flaw in the OpenSSL SSL/TLS server code causes the server to negotiate - TLS 1.0 instead of higher protocol versions when the ClientHello message - is badly fragmented. This allows a man-in-the-middle attacker to force a - downgrade to TLS 1.0 even if both the server and the client support a - higher protocol version, by modifying the client's TLS records. - - Thanks to David Benjamin and Adam Langley (Google) for discovering and - researching this issue. - (CVE-2014-3511) - [David Benjamin] - - *) OpenSSL DTLS clients enabling anonymous (EC)DH ciphersuites are subject - to a denial of service attack. A malicious server can crash the client - with a null pointer dereference (read) by specifying an anonymous (EC)DH - ciphersuite and sending carefully crafted handshake messages. - - Thanks to Felix Gröbert (Google) for discovering and researching this - issue. - (CVE-2014-3510) - [Emilia Käsper] - - *) By sending carefully crafted DTLS packets an attacker could cause openssl - to leak memory. This can be exploited through a Denial of Service attack. - Thanks to Adam Langley for discovering and researching this issue. - (CVE-2014-3507) - [Adam Langley] - - *) An attacker can force openssl to consume large amounts of memory whilst - processing DTLS handshake messages. This can be exploited through a - Denial of Service attack. - Thanks to Adam Langley for discovering and researching this issue. - (CVE-2014-3506) - [Adam Langley] - - *) An attacker can force an error condition which causes openssl to crash - whilst processing DTLS packets due to memory being freed twice. This - can be exploited through a Denial of Service attack. - Thanks to Adam Langley and Wan-Teh Chang for discovering and researching - this issue. - (CVE-2014-3505) - [Adam Langley] - - *) If a multithreaded client connects to a malicious server using a resumed - session and the server sends an ec point format extension it could write - up to 255 bytes to freed memory. - - Thanks to Gabor Tyukasz (LogMeIn Inc) for discovering and researching this - issue. - (CVE-2014-3509) - [Gabor Tyukasz] - - *) A malicious server can crash an OpenSSL client with a null pointer - dereference (read) by specifying an SRP ciphersuite even though it was not - properly negotiated with the client. This can be exploited through a - Denial of Service attack. - - Thanks to Joonas Kuorilehto and Riku Hietamäki (Codenomicon) for - discovering and researching this issue. - (CVE-2014-5139) - [Steve Henson] - - *) A flaw in OBJ_obj2txt may cause pretty printing functions such as - X509_name_oneline, X509_name_print_ex et al. to leak some information - from the stack. Applications may be affected if they echo pretty printing - output to the attacker. - - Thanks to Ivan Fratric (Google) for discovering this issue. - (CVE-2014-3508) - [Emilia Käsper, and Steve Henson] - - *) Fix ec_GFp_simple_points_make_affine (thus, EC_POINTs_mul etc.) - for corner cases. (Certain input points at infinity could lead to - bogus results, with non-infinity inputs mapped to infinity too.) - [Bodo Moeller] - - Changes between 1.0.1g and 1.0.1h [5 Jun 2014] - - *) Fix for SSL/TLS MITM flaw. An attacker using a carefully crafted - handshake can force the use of weak keying material in OpenSSL - SSL/TLS clients and servers. - - Thanks to KIKUCHI Masashi (Lepidum Co. Ltd.) for discovering and - researching this issue. (CVE-2014-0224) - [KIKUCHI Masashi, Steve Henson] - - *) Fix DTLS recursion flaw. By sending an invalid DTLS handshake to an - OpenSSL DTLS client the code can be made to recurse eventually crashing - in a DoS attack. - - Thanks to Imre Rad (Search-Lab Ltd.) for discovering this issue. - (CVE-2014-0221) - [Imre Rad, Steve Henson] - - *) Fix DTLS invalid fragment vulnerability. A buffer overrun attack can - be triggered by sending invalid DTLS fragments to an OpenSSL DTLS - client or server. This is potentially exploitable to run arbitrary - code on a vulnerable client or server. - - Thanks to Jüri Aedla for reporting this issue. (CVE-2014-0195) - [Jüri Aedla, Steve Henson] - - *) Fix bug in TLS code where clients enable anonymous ECDH ciphersuites - are subject to a denial of service attack. - - Thanks to Felix Gröbert and Ivan Fratric at Google for discovering - this issue. (CVE-2014-3470) - [Felix Gröbert, Ivan Fratric, Steve Henson] - - *) Harmonize version and its documentation. -f flag is used to display - compilation flags. - [mancha <mancha1@zoho.com>] - - *) Fix eckey_priv_encode so it immediately returns an error upon a failure - in i2d_ECPrivateKey. - [mancha <mancha1@zoho.com>] - - *) Fix some double frees. These are not thought to be exploitable. - [mancha <mancha1@zoho.com>] - - Changes between 1.0.1f and 1.0.1g [7 Apr 2014] - - *) A missing bounds check in the handling of the TLS heartbeat extension - can be used to reveal up to 64k of memory to a connected client or - server. - - Thanks for Neel Mehta of Google Security for discovering this bug and to - Adam Langley <agl@chromium.org> and Bodo Moeller <bmoeller@acm.org> for - preparing the fix (CVE-2014-0160) - [Adam Langley, Bodo Moeller] - - *) Fix for the attack described in the paper "Recovering OpenSSL - ECDSA Nonces Using the FLUSH+RELOAD Cache Side-channel Attack" - by Yuval Yarom and Naomi Benger. Details can be obtained from: - http://eprint.iacr.org/2014/140 - - Thanks to Yuval Yarom and Naomi Benger for discovering this - flaw and to Yuval Yarom for supplying a fix (CVE-2014-0076) - [Yuval Yarom and Naomi Benger] - - *) TLS pad extension: draft-agl-tls-padding-03 - - Workaround for the "TLS hang bug" (see FAQ and PR#2771): if the - TLS client Hello record length value would otherwise be > 255 and - less that 512 pad with a dummy extension containing zeroes so it - is at least 512 bytes long. - - [Adam Langley, Steve Henson] - - Changes between 1.0.1e and 1.0.1f [6 Jan 2014] - - *) Fix for TLS record tampering bug. A carefully crafted invalid - handshake could crash OpenSSL with a NULL pointer exception. - Thanks to Anton Johansson for reporting this issues. - (CVE-2013-4353) - - *) Keep original DTLS digest and encryption contexts in retransmission - structures so we can use the previous session parameters if they need - to be resent. (CVE-2013-6450) - [Steve Henson] - - *) Add option SSL_OP_SAFARI_ECDHE_ECDSA_BUG (part of SSL_OP_ALL) which - avoids preferring ECDHE-ECDSA ciphers when the client appears to be - Safari on OS X. Safari on OS X 10.8..10.8.3 advertises support for - several ECDHE-ECDSA ciphers, but fails to negotiate them. The bug - is fixed in OS X 10.8.4, but Apple have ruled out both hot fixing - 10.8..10.8.3 and forcing users to upgrade to 10.8.4 or newer. - [Rob Stradling, Adam Langley] - - Changes between 1.0.1d and 1.0.1e [11 Feb 2013] - - *) Correct fix for CVE-2013-0169. The original didn't work on AES-NI - supporting platforms or when small records were transferred. - [Andy Polyakov, Steve Henson] - - Changes between 1.0.1c and 1.0.1d [5 Feb 2013] - - *) Make the decoding of SSLv3, TLS and DTLS CBC records constant time. - - This addresses the flaw in CBC record processing discovered by - Nadhem Alfardan and Kenny Paterson. Details of this attack can be found - at: http://www.isg.rhul.ac.uk/tls/ - - Thanks go to Nadhem Alfardan and Kenny Paterson of the Information - Security Group at Royal Holloway, University of London - (www.isg.rhul.ac.uk) for discovering this flaw and Adam Langley and - Emilia Käsper for the initial patch. - (CVE-2013-0169) - [Emilia Käsper, Adam Langley, Ben Laurie, Andy Polyakov, Steve Henson] - - *) Fix flaw in AESNI handling of TLS 1.2 and 1.1 records for CBC mode - ciphersuites which can be exploited in a denial of service attack. - Thanks go to and to Adam Langley <agl@chromium.org> for discovering - and detecting this bug and to Wolfgang Ettlinger - <wolfgang.ettlinger@gmail.com> for independently discovering this issue. - (CVE-2012-2686) - [Adam Langley] - - *) Return an error when checking OCSP signatures when key is NULL. - This fixes a DoS attack. (CVE-2013-0166) - [Steve Henson] - - *) Make openssl verify return errors. - [Chris Palmer <palmer@google.com> and Ben Laurie] - - *) Call OCSP Stapling callback after ciphersuite has been chosen, so - the right response is stapled. Also change SSL_get_certificate() - so it returns the certificate actually sent. - See http://rt.openssl.org/Ticket/Display.html?id=2836. - [Rob Stradling <rob.stradling@comodo.com>] - - *) Fix possible deadlock when decoding public keys. - [Steve Henson] - - *) Don't use TLS 1.0 record version number in initial client hello - if renegotiating. - [Steve Henson] - - Changes between 1.0.1b and 1.0.1c [10 May 2012] - - *) Sanity check record length before skipping explicit IV in TLS - 1.2, 1.1 and DTLS to fix DoS attack. - - Thanks to Codenomicon for discovering this issue using Fuzz-o-Matic - fuzzing as a service testing platform. - (CVE-2012-2333) - [Steve Henson] - - *) Initialise tkeylen properly when encrypting CMS messages. - Thanks to Solar Designer of Openwall for reporting this issue. - [Steve Henson] - - *) In FIPS mode don't try to use composite ciphers as they are not - approved. - [Steve Henson] - - Changes between 1.0.1a and 1.0.1b [26 Apr 2012] - - *) OpenSSL 1.0.0 sets SSL_OP_ALL to 0x80000FFFL and OpenSSL 1.0.1 and - 1.0.1a set SSL_OP_NO_TLSv1_1 to 0x00000400L which would unfortunately - mean any application compiled against OpenSSL 1.0.0 headers setting - SSL_OP_ALL would also set SSL_OP_NO_TLSv1_1, unintentionally disabling - TLS 1.1 also. Fix this by changing the value of SSL_OP_NO_TLSv1_1 to - 0x10000000L Any application which was previously compiled against - OpenSSL 1.0.1 or 1.0.1a headers and which cares about SSL_OP_NO_TLSv1_1 - will need to be recompiled as a result. Letting be results in - inability to disable specifically TLS 1.1 and in client context, - in unlike event, limit maximum offered version to TLS 1.0 [see below]. - [Steve Henson] - - *) In order to ensure interoperability SSL_OP_NO_protocolX does not - disable just protocol X, but all protocols above X *if* there are - protocols *below* X still enabled. In more practical terms it means - that if application wants to disable TLS1.0 in favor of TLS1.1 and - above, it's not sufficient to pass SSL_OP_NO_TLSv1, one has to pass - SSL_OP_NO_TLSv1|SSL_OP_NO_SSLv3|SSL_OP_NO_SSLv2. This applies to - client side. - [Andy Polyakov] - - Changes between 1.0.1 and 1.0.1a [19 Apr 2012] - - *) Check for potentially exploitable overflows in asn1_d2i_read_bio - BUF_mem_grow and BUF_mem_grow_clean. Refuse attempts to shrink buffer - in CRYPTO_realloc_clean. - - Thanks to Tavis Ormandy, Google Security Team, for discovering this - issue and to Adam Langley <agl@chromium.org> for fixing it. - (CVE-2012-2110) - [Adam Langley (Google), Tavis Ormandy, Google Security Team] - - *) Don't allow TLS 1.2 SHA-256 ciphersuites in TLS 1.0, 1.1 connections. - [Adam Langley] - - *) Workarounds for some broken servers that "hang" if a client hello - record length exceeds 255 bytes. - - 1. Do not use record version number > TLS 1.0 in initial client - hello: some (but not all) hanging servers will now work. - 2. If we set OPENSSL_MAX_TLS1_2_CIPHER_LENGTH this will truncate - the number of ciphers sent in the client hello. This should be - set to an even number, such as 50, for example by passing: - -DOPENSSL_MAX_TLS1_2_CIPHER_LENGTH=50 to config or Configure. - Most broken servers should now work. - 3. If all else fails setting OPENSSL_NO_TLS1_2_CLIENT will disable - TLS 1.2 client support entirely. - [Steve Henson] - - *) Fix SEGV in Vector Permutation AES module observed in OpenSSH. - [Andy Polyakov] - - Changes between 1.0.0h and 1.0.1 [14 Mar 2012] - - *) Add compatibility with old MDC2 signatures which use an ASN1 OCTET - STRING form instead of a DigestInfo. - [Steve Henson] - - *) The format used for MDC2 RSA signatures is inconsistent between EVP - and the RSA_sign/RSA_verify functions. This was made more apparent when - OpenSSL used RSA_sign/RSA_verify for some RSA signatures in particular - those which went through EVP_PKEY_METHOD in 1.0.0 and later. Detect - the correct format in RSA_verify so both forms transparently work. - [Steve Henson] - - *) Some servers which support TLS 1.0 can choke if we initially indicate - support for TLS 1.2 and later renegotiate using TLS 1.0 in the RSA - encrypted premaster secret. As a workaround use the maximum permitted - client version in client hello, this should keep such servers happy - and still work with previous versions of OpenSSL. - [Steve Henson] - - *) Add support for TLS/DTLS heartbeats. - [Robin Seggelmann <seggelmann@fh-muenster.de>] - - *) Add support for SCTP. - [Robin Seggelmann <seggelmann@fh-muenster.de>] - - *) Improved PRNG seeding for VOS. - [Paul Green <Paul.Green@stratus.com>] - - *) Extensive assembler packs updates, most notably: - - - x86[_64]: AES-NI, PCLMULQDQ, RDRAND support; - - x86[_64]: SSSE3 support (SHA1, vector-permutation AES); - - x86_64: bit-sliced AES implementation; - - ARM: NEON support, contemporary platforms optimizations; - - s390x: z196 support; - - *: GHASH and GF(2^m) multiplication implementations; - - [Andy Polyakov] - - *) Make TLS-SRP code conformant with RFC 5054 API cleanup - (removal of unnecessary code) - [Peter Sylvester <peter.sylvester@edelweb.fr>] - - *) Add TLS key material exporter from RFC 5705. - [Eric Rescorla] - - *) Add DTLS-SRTP negotiation from RFC 5764. - [Eric Rescorla] - - *) Add Next Protocol Negotiation, - http://tools.ietf.org/html/draft-agl-tls-nextprotoneg-00. Can be - disabled with a no-npn flag to config or Configure. Code donated - by Google. - [Adam Langley <agl@google.com> and Ben Laurie] - - *) Add optional 64-bit optimized implementations of elliptic curves NIST-P224, - NIST-P256, NIST-P521, with constant-time single point multiplication on - typical inputs. Compiler support for the nonstandard type __uint128_t is - required to use this (present in gcc 4.4 and later, for 64-bit builds). - Code made available under Apache License version 2.0. - - Specify "enable-ec_nistp_64_gcc_128" on the Configure (or config) command - line to include this in your build of OpenSSL, and run "make depend" (or - "make update"). This enables the following EC_METHODs: - - EC_GFp_nistp224_method() - EC_GFp_nistp256_method() - EC_GFp_nistp521_method() - - EC_GROUP_new_by_curve_name() will automatically use these (while - EC_GROUP_new_curve_GFp() currently prefers the more flexible - implementations). - [Emilia Käsper, Adam Langley, Bodo Moeller (Google)] - - *) Use type ossl_ssize_t instead of ssize_t which isn't available on - all platforms. Move ssize_t definition from e_os.h to the public - header file e_os2.h as it now appears in public header file cms.h - [Steve Henson] - - *) New -sigopt option to the ca, req and x509 utilities. Additional - signature parameters can be passed using this option and in - particular PSS. - [Steve Henson] - - *) Add RSA PSS signing function. This will generate and set the - appropriate AlgorithmIdentifiers for PSS based on those in the - corresponding EVP_MD_CTX structure. No application support yet. - [Steve Henson] - - *) Support for companion algorithm specific ASN1 signing routines. - New function ASN1_item_sign_ctx() signs a pre-initialised - EVP_MD_CTX structure and sets AlgorithmIdentifiers based on - the appropriate parameters. - [Steve Henson] - - *) Add new algorithm specific ASN1 verification initialisation function - to EVP_PKEY_ASN1_METHOD: this is not in EVP_PKEY_METHOD since the ASN1 - handling will be the same no matter what EVP_PKEY_METHOD is used. - Add a PSS handler to support verification of PSS signatures: checked - against a number of sample certificates. - [Steve Henson] - - *) Add signature printing for PSS. Add PSS OIDs. - [Steve Henson, Martin Kaiser <lists@kaiser.cx>] - - *) Add algorithm specific signature printing. An individual ASN1 method - can now print out signatures instead of the standard hex dump. - - More complex signatures (e.g. PSS) can print out more meaningful - information. Include DSA version that prints out the signature - parameters r, s. - [Steve Henson] - - *) Password based recipient info support for CMS library: implementing - RFC3211. - [Steve Henson] - - *) Split password based encryption into PBES2 and PBKDF2 functions. This - neatly separates the code into cipher and PBE sections and is required - for some algorithms that split PBES2 into separate pieces (such as - password based CMS). - [Steve Henson] - - *) Session-handling fixes: - - Fix handling of connections that are resuming with a session ID, - but also support Session Tickets. - - Fix a bug that suppressed issuing of a new ticket if the client - presented a ticket with an expired session. - - Try to set the ticket lifetime hint to something reasonable. - - Make tickets shorter by excluding irrelevant information. - - On the client side, don't ignore renewed tickets. - [Adam Langley, Bodo Moeller (Google)] - - *) Fix PSK session representation. - [Bodo Moeller] - - *) Add RC4-MD5 and AESNI-SHA1 "stitched" implementations. - - This work was sponsored by Intel. - [Andy Polyakov] - - *) Add GCM support to TLS library. Some custom code is needed to split - the IV between the fixed (from PRF) and explicit (from TLS record) - portions. This adds all GCM ciphersuites supported by RFC5288 and - RFC5289. Generalise some AES* cipherstrings to include GCM and - add a special AESGCM string for GCM only. - [Steve Henson] - - *) Expand range of ctrls for AES GCM. Permit setting invocation - field on decrypt and retrieval of invocation field only on encrypt. - [Steve Henson] - - *) Add HMAC ECC ciphersuites from RFC5289. Include SHA384 PRF support. - As required by RFC5289 these ciphersuites cannot be used if for - versions of TLS earlier than 1.2. - [Steve Henson] - - *) For FIPS capable OpenSSL interpret a NULL default public key method - as unset and return the appropriate default but do *not* set the default. - This means we can return the appropriate method in applications that - switch between FIPS and non-FIPS modes. - [Steve Henson] - - *) Redirect HMAC and CMAC operations to FIPS module in FIPS mode. If an - ENGINE is used then we cannot handle that in the FIPS module so we - keep original code iff non-FIPS operations are allowed. - [Steve Henson] - - *) Add -attime option to openssl utilities. - [Peter Eckersley <pde@eff.org>, Ben Laurie and Steve Henson] - - *) Redirect DSA and DH operations to FIPS module in FIPS mode. - [Steve Henson] - - *) Redirect ECDSA and ECDH operations to FIPS module in FIPS mode. Also use - FIPS EC methods unconditionally for now. - [Steve Henson] - - *) New build option no-ec2m to disable characteristic 2 code. - [Steve Henson] - - *) Backport libcrypto audit of return value checking from 1.1.0-dev; not - all cases can be covered as some introduce binary incompatibilities. - [Steve Henson] - - *) Redirect RSA operations to FIPS module including keygen, - encrypt, decrypt, sign and verify. Block use of non FIPS RSA methods. - [Steve Henson] - - *) Add similar low level API blocking to ciphers. - [Steve Henson] - - *) Low level digest APIs are not approved in FIPS mode: any attempt - to use these will cause a fatal error. Applications that *really* want - to use them can use the private_* version instead. - [Steve Henson] - - *) Redirect cipher operations to FIPS module for FIPS builds. - [Steve Henson] - - *) Redirect digest operations to FIPS module for FIPS builds. - [Steve Henson] - - *) Update build system to add "fips" flag which will link in fipscanister.o - for static and shared library builds embedding a signature if needed. - [Steve Henson] - - *) Output TLS supported curves in preference order instead of numerical - order. This is currently hardcoded for the highest order curves first. - This should be configurable so applications can judge speed vs strength. - [Steve Henson] - - *) Add TLS v1.2 server support for client authentication. - [Steve Henson] - - *) Add support for FIPS mode in ssl library: disable SSLv3, non-FIPS ciphers - and enable MD5. - [Steve Henson] - - *) Functions FIPS_mode_set() and FIPS_mode() which call the underlying - FIPS modules versions. - [Steve Henson] - - *) Add TLS v1.2 client side support for client authentication. Keep cache - of handshake records longer as we don't know the hash algorithm to use - until after the certificate request message is received. - [Steve Henson] - - *) Initial TLS v1.2 client support. Add a default signature algorithms - extension including all the algorithms we support. Parse new signature - format in client key exchange. Relax some ECC signing restrictions for - TLS v1.2 as indicated in RFC5246. - [Steve Henson] - - *) Add server support for TLS v1.2 signature algorithms extension. Switch - to new signature format when needed using client digest preference. - All server ciphersuites should now work correctly in TLS v1.2. No client - support yet and no support for client certificates. - [Steve Henson] - - *) Initial TLS v1.2 support. Add new SHA256 digest to ssl code, switch - to SHA256 for PRF when using TLS v1.2 and later. Add new SHA256 based - ciphersuites. At present only RSA key exchange ciphersuites work with - TLS v1.2. Add new option for TLS v1.2 replacing the old and obsolete - SSL_OP_PKCS1_CHECK flags with SSL_OP_NO_TLSv1_2. New TLSv1.2 methods - and version checking. - [Steve Henson] - - *) New option OPENSSL_NO_SSL_INTERN. If an application can be compiled - with this defined it will not be affected by any changes to ssl internal - structures. Add several utility functions to allow openssl application - to work with OPENSSL_NO_SSL_INTERN defined. - [Steve Henson] - - *) A long standing patch to add support for SRP from EdelWeb (Peter - Sylvester and Christophe Renou) was integrated. - [Christophe Renou <christophe.renou@edelweb.fr>, Peter Sylvester - <peter.sylvester@edelweb.fr>, Tom Wu <tjw@cs.stanford.edu>, and - Ben Laurie] - - *) Add functions to copy EVP_PKEY_METHOD and retrieve flags and id. - [Steve Henson] - - *) Permit abbreviated handshakes when renegotiating using the function - SSL_renegotiate_abbreviated(). - [Robin Seggelmann <seggelmann@fh-muenster.de>] - - *) Add call to ENGINE_register_all_complete() to - ENGINE_load_builtin_engines(), so some implementations get used - automatically instead of needing explicit application support. - [Steve Henson] - - *) Add support for TLS key exporter as described in RFC5705. - [Robin Seggelmann <seggelmann@fh-muenster.de>, Steve Henson] - - *) Initial TLSv1.1 support. Since TLSv1.1 is very similar to TLS v1.0 only - a few changes are required: - - Add SSL_OP_NO_TLSv1_1 flag. - Add TLSv1_1 methods. - Update version checking logic to handle version 1.1. - Add explicit IV handling (ported from DTLS code). - Add command line options to s_client/s_server. - [Steve Henson] - - Changes between 1.0.0g and 1.0.0h [12 Mar 2012] - - *) Fix MMA (Bleichenbacher's attack on PKCS #1 v1.5 RSA padding) weakness - in CMS and PKCS7 code. When RSA decryption fails use a random key for - content decryption and always return the same error. Note: this attack - needs on average 2^20 messages so it only affects automated senders. The - old behaviour can be re-enabled in the CMS code by setting the - CMS_DEBUG_DECRYPT flag: this is useful for debugging and testing where - an MMA defence is not necessary. - Thanks to Ivan Nestlerode <inestlerode@us.ibm.com> for discovering - this issue. (CVE-2012-0884) - [Steve Henson] - - *) Fix CVE-2011-4619: make sure we really are receiving a - client hello before rejecting multiple SGC restarts. Thanks to - Ivan Nestlerode <inestlerode@us.ibm.com> for discovering this bug. - [Steve Henson] - - Changes between 1.0.0f and 1.0.0g [18 Jan 2012] - - *) Fix for DTLS DoS issue introduced by fix for CVE-2011-4109. - Thanks to Antonio Martin, Enterprise Secure Access Research and - Development, Cisco Systems, Inc. for discovering this bug and - preparing a fix. (CVE-2012-0050) - [Antonio Martin] - - Changes between 1.0.0e and 1.0.0f [4 Jan 2012] - - *) Nadhem Alfardan and Kenny Paterson have discovered an extension - of the Vaudenay padding oracle attack on CBC mode encryption - which enables an efficient plaintext recovery attack against - the OpenSSL implementation of DTLS. Their attack exploits timing - differences arising during decryption processing. A research - paper describing this attack can be found at: - http://www.isg.rhul.ac.uk/~kp/dtls.pdf - Thanks go to Nadhem Alfardan and Kenny Paterson of the Information - Security Group at Royal Holloway, University of London - (www.isg.rhul.ac.uk) for discovering this flaw and to Robin Seggelmann - <seggelmann@fh-muenster.de> and Michael Tuexen <tuexen@fh-muenster.de> - for preparing the fix. (CVE-2011-4108) - [Robin Seggelmann, Michael Tuexen] - - *) Clear bytes used for block padding of SSL 3.0 records. - (CVE-2011-4576) - [Adam Langley (Google)] - - *) Only allow one SGC handshake restart for SSL/TLS. Thanks to George - Kadianakis <desnacked@gmail.com> for discovering this issue and - Adam Langley for preparing the fix. (CVE-2011-4619) - [Adam Langley (Google)] - - *) Check parameters are not NULL in GOST ENGINE. (CVE-2012-0027) - [Andrey Kulikov <amdeich@gmail.com>] - - *) Prevent malformed RFC3779 data triggering an assertion failure. - Thanks to Andrew Chi, BBN Technologies, for discovering the flaw - and Rob Austein <sra@hactrn.net> for fixing it. (CVE-2011-4577) - [Rob Austein <sra@hactrn.net>] - - *) Improved PRNG seeding for VOS. - [Paul Green <Paul.Green@stratus.com>] - - *) Fix ssl_ciph.c set-up race. - [Adam Langley (Google)] - - *) Fix spurious failures in ecdsatest.c. - [Emilia Käsper (Google)] - - *) Fix the BIO_f_buffer() implementation (which was mixing different - interpretations of the '..._len' fields). - [Adam Langley (Google)] - - *) Fix handling of BN_BLINDING: now BN_BLINDING_invert_ex (rather than - BN_BLINDING_invert_ex) calls BN_BLINDING_update, ensuring that concurrent - threads won't reuse the same blinding coefficients. - - This also avoids the need to obtain the CRYPTO_LOCK_RSA_BLINDING - lock to call BN_BLINDING_invert_ex, and avoids one use of - BN_BLINDING_update for each BN_BLINDING structure (previously, - the last update always remained unused). - [Emilia Käsper (Google)] - - *) In ssl3_clear, preserve s3->init_extra along with s3->rbuf. - [Bob Buckholz (Google)] - - Changes between 1.0.0d and 1.0.0e [6 Sep 2011] - - *) Fix bug where CRLs with nextUpdate in the past are sometimes accepted - by initialising X509_STORE_CTX properly. (CVE-2011-3207) - [Kaspar Brand <ossl@velox.ch>] - - *) Fix SSL memory handling for (EC)DH ciphersuites, in particular - for multi-threaded use of ECDH. (CVE-2011-3210) - [Adam Langley (Google)] - - *) Fix x509_name_ex_d2i memory leak on bad inputs. - [Bodo Moeller] - - *) Remove hard coded ecdsaWithSHA1 signature tests in ssl code and check - signature public key algorithm by using OID xref utilities instead. - Before this you could only use some ECC ciphersuites with SHA1 only. - [Steve Henson] - - *) Add protection against ECDSA timing attacks as mentioned in the paper - by Billy Bob Brumley and Nicola Tuveri, see: - - http://eprint.iacr.org/2011/232.pdf - - [Billy Bob Brumley and Nicola Tuveri] - - Changes between 1.0.0c and 1.0.0d [8 Feb 2011] - - *) Fix parsing of OCSP stapling ClientHello extension. CVE-2011-0014 - [Neel Mehta, Adam Langley, Bodo Moeller (Google)] - - *) Fix bug in string printing code: if *any* escaping is enabled we must - escape the escape character (backslash) or the resulting string is - ambiguous. - [Steve Henson] - - Changes between 1.0.0b and 1.0.0c [2 Dec 2010] - - *) Disable code workaround for ancient and obsolete Netscape browsers - and servers: an attacker can use it in a ciphersuite downgrade attack. - Thanks to Martin Rex for discovering this bug. CVE-2010-4180 - [Steve Henson] - - *) Fixed J-PAKE implementation error, originally discovered by - Sebastien Martini, further info and confirmation from Stefan - Arentz and Feng Hao. Note that this fix is a security fix. CVE-2010-4252 - [Ben Laurie] - - Changes between 1.0.0a and 1.0.0b [16 Nov 2010] - - *) Fix extension code to avoid race conditions which can result in a buffer - overrun vulnerability: resumed sessions must not be modified as they can - be shared by multiple threads. CVE-2010-3864 - [Steve Henson] - - *) Fix WIN32 build system to correctly link an ENGINE directory into - a DLL. - [Steve Henson] - - Changes between 1.0.0 and 1.0.0a [01 Jun 2010] - - *) Check return value of int_rsa_verify in pkey_rsa_verifyrecover - (CVE-2010-1633) - [Steve Henson, Peter-Michael Hager <hager@dortmund.net>] - - Changes between 0.9.8n and 1.0.0 [29 Mar 2010] - - *) Add "missing" function EVP_CIPHER_CTX_copy(). This copies a cipher - context. The operation can be customised via the ctrl mechanism in - case ENGINEs want to include additional functionality. - [Steve Henson] - - *) Tolerate yet another broken PKCS#8 key format: private key value negative. - [Steve Henson] - - *) Add new -subject_hash_old and -issuer_hash_old options to x509 utility to - output hashes compatible with older versions of OpenSSL. - [Willy Weisz <weisz@vcpc.univie.ac.at>] - - *) Fix compression algorithm handling: if resuming a session use the - compression algorithm of the resumed session instead of determining - it from client hello again. Don't allow server to change algorithm. - [Steve Henson] - - *) Add load_crls() function to apps tidying load_certs() too. Add option - to verify utility to allow additional CRLs to be included. - [Steve Henson] - - *) Update OCSP request code to permit adding custom headers to the request: - some responders need this. - [Steve Henson] - - *) The function EVP_PKEY_sign() returns <=0 on error: check return code - correctly. - [Julia Lawall <julia@diku.dk>] - - *) Update verify callback code in apps/s_cb.c and apps/verify.c, it - needlessly dereferenced structures, used obsolete functions and - didn't handle all updated verify codes correctly. - [Steve Henson] - - *) Disable MD2 in the default configuration. - [Steve Henson] - - *) In BIO_pop() and BIO_push() use the ctrl argument (which was NULL) to - indicate the initial BIO being pushed or popped. This makes it possible - to determine whether the BIO is the one explicitly called or as a result - of the ctrl being passed down the chain. Fix BIO_pop() and SSL BIOs so - it handles reference counts correctly and doesn't zero out the I/O bio - when it is not being explicitly popped. WARNING: applications which - included workarounds for the old buggy behaviour will need to be modified - or they could free up already freed BIOs. - [Steve Henson] - - *) Extend the uni2asc/asc2uni => OPENSSL_uni2asc/OPENSSL_asc2uni - renaming to all platforms (within the 0.9.8 branch, this was - done conditionally on Netware platforms to avoid a name clash). - [Guenter <lists@gknw.net>] - - *) Add ECDHE and PSK support to DTLS. - [Michael Tuexen <tuexen@fh-muenster.de>] - - *) Add CHECKED_STACK_OF macro to safestack.h, otherwise safestack can't - be used on C++. - [Steve Henson] - - *) Add "missing" function EVP_MD_flags() (without this the only way to - retrieve a digest flags is by accessing the structure directly. Update - EVP_MD_do_all*() and EVP_CIPHER_do_all*() to include the name a digest - or cipher is registered as in the "from" argument. Print out all - registered digests in the dgst usage message instead of manually - attempting to work them out. - [Steve Henson] - - *) If no SSLv2 ciphers are used don't use an SSLv2 compatible client hello: - this allows the use of compression and extensions. Change default cipher - string to remove SSLv2 ciphersuites. This effectively avoids ancient SSLv2 - by default unless an application cipher string requests it. - [Steve Henson] - - *) Alter match criteria in PKCS12_parse(). It used to try to use local - key ids to find matching certificates and keys but some PKCS#12 files - don't follow the (somewhat unwritten) rules and this strategy fails. - Now just gather all certificates together and the first private key - then look for the first certificate that matches the key. - [Steve Henson] - - *) Support use of registered digest and cipher names for dgst and cipher - commands instead of having to add each one as a special case. So now - you can do: - - openssl sha256 foo - - as well as: - - openssl dgst -sha256 foo - - and this works for ENGINE based algorithms too. - - [Steve Henson] - - *) Update Gost ENGINE to support parameter files. - [Victor B. Wagner <vitus@cryptocom.ru>] - - *) Support GeneralizedTime in ca utility. - [Oliver Martin <oliver@volatilevoid.net>, Steve Henson] - - *) Enhance the hash format used for certificate directory links. The new - form uses the canonical encoding (meaning equivalent names will work - even if they aren't identical) and uses SHA1 instead of MD5. This form - is incompatible with the older format and as a result c_rehash should - be used to rebuild symbolic links. - [Steve Henson] - - *) Make PKCS#8 the default write format for private keys, replacing the - traditional format. This form is standardised, more secure and doesn't - include an implicit MD5 dependency. - [Steve Henson] - - *) Add a $gcc_devteam_warn option to Configure. The idea is that any code - committed to OpenSSL should pass this lot as a minimum. - [Steve Henson] - - *) Add session ticket override functionality for use by EAP-FAST. - [Jouni Malinen <j@w1.fi>] - - *) Modify HMAC functions to return a value. Since these can be implemented - in an ENGINE errors can occur. - [Steve Henson] - - *) Type-checked OBJ_bsearch_ex. - [Ben Laurie] - - *) Type-checked OBJ_bsearch. Also some constification necessitated - by type-checking. Still to come: TXT_DB, bsearch(?), - OBJ_bsearch_ex, qsort, CRYPTO_EX_DATA, ASN1_VALUE, ASN1_STRING, - CONF_VALUE. - [Ben Laurie] - - *) New function OPENSSL_gmtime_adj() to add a specific number of days and - seconds to a tm structure directly, instead of going through OS - specific date routines. This avoids any issues with OS routines such - as the year 2038 bug. New *_adj() functions for ASN1 time structures - and X509_time_adj_ex() to cover the extended range. The existing - X509_time_adj() is still usable and will no longer have any date issues. - [Steve Henson] - - *) Delta CRL support. New use deltas option which will attempt to locate - and search any appropriate delta CRLs available. - - This work was sponsored by Google. - [Steve Henson] - - *) Support for CRLs partitioned by reason code. Reorganise CRL processing - code and add additional score elements. Validate alternate CRL paths - as part of the CRL checking and indicate a new error "CRL path validation - error" in this case. Applications wanting additional details can use - the verify callback and check the new "parent" field. If this is not - NULL CRL path validation is taking place. Existing applications won't - see this because it requires extended CRL support which is off by - default. - - This work was sponsored by Google. - [Steve Henson] - - *) Support for freshest CRL extension. - - This work was sponsored by Google. - [Steve Henson] - - *) Initial indirect CRL support. Currently only supported in the CRLs - passed directly and not via lookup. Process certificate issuer - CRL entry extension and lookup CRL entries by bother issuer name - and serial number. Check and process CRL issuer entry in IDP extension. - - This work was sponsored by Google. - [Steve Henson] - - *) Add support for distinct certificate and CRL paths. The CRL issuer - certificate is validated separately in this case. Only enabled if - an extended CRL support flag is set: this flag will enable additional - CRL functionality in future. - - This work was sponsored by Google. - [Steve Henson] - - *) Add support for policy mappings extension. - - This work was sponsored by Google. - [Steve Henson] - - *) Fixes to pathlength constraint, self issued certificate handling, - policy processing to align with RFC3280 and PKITS tests. - - This work was sponsored by Google. - [Steve Henson] - - *) Support for name constraints certificate extension. DN, email, DNS - and URI types are currently supported. - - This work was sponsored by Google. - [Steve Henson] - - *) To cater for systems that provide a pointer-based thread ID rather - than numeric, deprecate the current numeric thread ID mechanism and - replace it with a structure and associated callback type. This - mechanism allows a numeric "hash" to be extracted from a thread ID in - either case, and on platforms where pointers are larger than 'long', - mixing is done to help ensure the numeric 'hash' is usable even if it - can't be guaranteed unique. The default mechanism is to use "&errno" - as a pointer-based thread ID to distinguish between threads. - - Applications that want to provide their own thread IDs should now use - CRYPTO_THREADID_set_callback() to register a callback that will call - either CRYPTO_THREADID_set_numeric() or CRYPTO_THREADID_set_pointer(). - - Note that ERR_remove_state() is now deprecated, because it is tied - to the assumption that thread IDs are numeric. ERR_remove_state(0) - to free the current thread's error state should be replaced by - ERR_remove_thread_state(NULL). - - (This new approach replaces the functions CRYPTO_set_idptr_callback(), - CRYPTO_get_idptr_callback(), and CRYPTO_thread_idptr() that existed in - OpenSSL 0.9.9-dev between June 2006 and August 2008. Also, if an - application was previously providing a numeric thread callback that - was inappropriate for distinguishing threads, then uniqueness might - have been obtained with &errno that happened immediately in the - intermediate development versions of OpenSSL; this is no longer the - case, the numeric thread callback will now override the automatic use - of &errno.) - [Geoff Thorpe, with help from Bodo Moeller] - - *) Initial support for different CRL issuing certificates. This covers a - simple case where the self issued certificates in the chain exist and - the real CRL issuer is higher in the existing chain. - - This work was sponsored by Google. - [Steve Henson] - - *) Removed effectively defunct crypto/store from the build. - [Ben Laurie] - - *) Revamp of STACK to provide stronger type-checking. Still to come: - TXT_DB, bsearch(?), OBJ_bsearch, qsort, CRYPTO_EX_DATA, ASN1_VALUE, - ASN1_STRING, CONF_VALUE. - [Ben Laurie] - - *) Add a new SSL_MODE_RELEASE_BUFFERS mode flag to release unused buffer - RAM on SSL connections. This option can save about 34k per idle SSL. - [Nick Mathewson] - - *) Revamp of LHASH to provide stronger type-checking. Still to come: - STACK, TXT_DB, bsearch, qsort. - [Ben Laurie] - - *) Initial support for Cryptographic Message Syntax (aka CMS) based - on RFC3850, RFC3851 and RFC3852. New cms directory and cms utility, - support for data, signedData, compressedData, digestedData and - encryptedData, envelopedData types included. Scripts to check against - RFC4134 examples draft and interop and consistency checks of many - content types and variants. - [Steve Henson] - - *) Add options to enc utility to support use of zlib compression BIO. - [Steve Henson] - - *) Extend mk1mf to support importing of options and assembly language - files from Configure script, currently only included in VC-WIN32. - The assembly language rules can now optionally generate the source - files from the associated perl scripts. - [Steve Henson] - - *) Implement remaining functionality needed to support GOST ciphersuites. - Interop testing has been performed using CryptoPro implementations. - [Victor B. Wagner <vitus@cryptocom.ru>] - - *) s390x assembler pack. - [Andy Polyakov] - - *) ARMv4 assembler pack. ARMv4 refers to v4 and later ISA, not CPU - "family." - [Andy Polyakov] - - *) Implement Opaque PRF Input TLS extension as specified in - draft-rescorla-tls-opaque-prf-input-00.txt. Since this is not an - official specification yet and no extension type assignment by - IANA exists, this extension (for now) will have to be explicitly - enabled when building OpenSSL by providing the extension number - to use. For example, specify an option - - -DTLSEXT_TYPE_opaque_prf_input=0x9527 - - to the "config" or "Configure" script to enable the extension, - assuming extension number 0x9527 (which is a completely arbitrary - and unofficial assignment based on the MD5 hash of the Internet - Draft). Note that by doing so, you potentially lose - interoperability with other TLS implementations since these might - be using the same extension number for other purposes. - - SSL_set_tlsext_opaque_prf_input(ssl, src, len) is used to set the - opaque PRF input value to use in the handshake. This will create - an internal copy of the length-'len' string at 'src', and will - return non-zero for success. - - To get more control and flexibility, provide a callback function - by using - - SSL_CTX_set_tlsext_opaque_prf_input_callback(ctx, cb) - SSL_CTX_set_tlsext_opaque_prf_input_callback_arg(ctx, arg) - - where - - int (*cb)(SSL *, void *peerinput, size_t len, void *arg); - void *arg; - - Callback function 'cb' will be called in handshakes, and is - expected to use SSL_set_tlsext_opaque_prf_input() as appropriate. - Argument 'arg' is for application purposes (the value as given to - SSL_CTX_set_tlsext_opaque_prf_input_callback_arg() will directly - be provided to the callback function). The callback function - has to return non-zero to report success: usually 1 to use opaque - PRF input just if possible, or 2 to enforce use of the opaque PRF - input. In the latter case, the library will abort the handshake - if opaque PRF input is not successfully negotiated. - - Arguments 'peerinput' and 'len' given to the callback function - will always be NULL and 0 in the case of a client. A server will - see the client's opaque PRF input through these variables if - available (NULL and 0 otherwise). Note that if the server - provides an opaque PRF input, the length must be the same as the - length of the client's opaque PRF input. - - Note that the callback function will only be called when creating - a new session (session resumption can resume whatever was - previously negotiated), and will not be called in SSL 2.0 - handshakes; thus, SSL_CTX_set_options(ctx, SSL_OP_NO_SSLv2) or - SSL_set_options(ssl, SSL_OP_NO_SSLv2) is especially recommended - for applications that need to enforce opaque PRF input. - - [Bodo Moeller] - - *) Update ssl code to support digests other than SHA1+MD5 for handshake - MAC. - - [Victor B. Wagner <vitus@cryptocom.ru>] - - *) Add RFC4507 support to OpenSSL. This includes the corrections in - RFC4507bis. The encrypted ticket format is an encrypted encoded - SSL_SESSION structure, that way new session features are automatically - supported. - - If a client application caches session in an SSL_SESSION structure - support is transparent because tickets are now stored in the encoded - SSL_SESSION. - - The SSL_CTX structure automatically generates keys for ticket - protection in servers so again support should be possible - with no application modification. - - If a client or server wishes to disable RFC4507 support then the option - SSL_OP_NO_TICKET can be set. - - Add a TLS extension debugging callback to allow the contents of any client - or server extensions to be examined. - - This work was sponsored by Google. - [Steve Henson] - - *) Final changes to avoid use of pointer pointer casts in OpenSSL. - OpenSSL should now compile cleanly on gcc 4.2 - [Peter Hartley <pdh@utter.chaos.org.uk>, Steve Henson] - - *) Update SSL library to use new EVP_PKEY MAC API. Include generic MAC - support including streaming MAC support: this is required for GOST - ciphersuite support. - [Victor B. Wagner <vitus@cryptocom.ru>, Steve Henson] - - *) Add option -stream to use PKCS#7 streaming in smime utility. New - function i2d_PKCS7_bio_stream() and PEM_write_PKCS7_bio_stream() - to output in BER and PEM format. - [Steve Henson] - - *) Experimental support for use of HMAC via EVP_PKEY interface. This - allows HMAC to be handled via the EVP_DigestSign*() interface. The - EVP_PKEY "key" in this case is the HMAC key, potentially allowing - ENGINE support for HMAC keys which are unextractable. New -mac and - -macopt options to dgst utility. - [Steve Henson] - - *) New option -sigopt to dgst utility. Update dgst to use - EVP_Digest{Sign,Verify}*. These two changes make it possible to use - alternative signing parameters such as X9.31 or PSS in the dgst - utility. - [Steve Henson] - - *) Change ssl_cipher_apply_rule(), the internal function that does - the work each time a ciphersuite string requests enabling - ("foo+bar"), moving ("+foo+bar"), disabling ("-foo+bar", or - removing ("!foo+bar") a class of ciphersuites: Now it maintains - the order of disabled ciphersuites such that those ciphersuites - that most recently went from enabled to disabled not only stay - in order with respect to each other, but also have higher priority - than other disabled ciphersuites the next time ciphersuites are - enabled again. - - This means that you can now say, e.g., "PSK:-PSK:HIGH" to enable - the same ciphersuites as with "HIGH" alone, but in a specific - order where the PSK ciphersuites come first (since they are the - most recently disabled ciphersuites when "HIGH" is parsed). - - Also, change ssl_create_cipher_list() (using this new - functionality) such that between otherwise identical - ciphersuites, ephemeral ECDH is preferred over ephemeral DH in - the default order. - [Bodo Moeller] - - *) Change ssl_create_cipher_list() so that it automatically - arranges the ciphersuites in reasonable order before starting - to process the rule string. Thus, the definition for "DEFAULT" - (SSL_DEFAULT_CIPHER_LIST) now is just "ALL:!aNULL:!eNULL", but - remains equivalent to "AES:ALL:!aNULL:!eNULL:+aECDH:+kRSA:+RC4:@STRENGTH". - This makes it much easier to arrive at a reasonable default order - in applications for which anonymous ciphers are OK (meaning - that you can't actually use DEFAULT). - [Bodo Moeller; suggested by Victor Duchovni] - - *) Split the SSL/TLS algorithm mask (as used for ciphersuite string - processing) into multiple integers instead of setting - "SSL_MKEY_MASK" bits, "SSL_AUTH_MASK" bits, "SSL_ENC_MASK", - "SSL_MAC_MASK", and "SSL_SSL_MASK" bits all in a single integer. - (These masks as well as the individual bit definitions are hidden - away into the non-exported interface ssl/ssl_locl.h, so this - change to the definition of the SSL_CIPHER structure shouldn't - affect applications.) This give us more bits for each of these - categories, so there is no longer a need to coagulate AES128 and - AES256 into a single algorithm bit, and to coagulate Camellia128 - and Camellia256 into a single algorithm bit, which has led to all - kinds of kludges. - - Thus, among other things, the kludge introduced in 0.9.7m and - 0.9.8e for masking out AES256 independently of AES128 or masking - out Camellia256 independently of AES256 is not needed here in 0.9.9. - - With the change, we also introduce new ciphersuite aliases that - so far were missing: "AES128", "AES256", "CAMELLIA128", and - "CAMELLIA256". - [Bodo Moeller] - - *) Add support for dsa-with-SHA224 and dsa-with-SHA256. - Use the leftmost N bytes of the signature input if the input is - larger than the prime q (with N being the size in bytes of q). - [Nils Larsch] - - *) Very *very* experimental PKCS#7 streaming encoder support. Nothing uses - it yet and it is largely untested. - [Steve Henson] - - *) Add support for the ecdsa-with-SHA224/256/384/512 signature types. - [Nils Larsch] - - *) Initial incomplete changes to avoid need for function casts in OpenSSL - some compilers (gcc 4.2 and later) reject their use. Safestack is - reimplemented. Update ASN1 to avoid use of legacy functions. - [Steve Henson] - - *) Win32/64 targets are linked with Winsock2. - [Andy Polyakov] - - *) Add an X509_CRL_METHOD structure to allow CRL processing to be redirected - to external functions. This can be used to increase CRL handling - efficiency especially when CRLs are very large by (for example) storing - the CRL revoked certificates in a database. - [Steve Henson] - - *) Overhaul of by_dir code. Add support for dynamic loading of CRLs so - new CRLs added to a directory can be used. New command line option - -verify_return_error to s_client and s_server. This causes real errors - to be returned by the verify callback instead of carrying on no matter - what. This reflects the way a "real world" verify callback would behave. - [Steve Henson] - - *) GOST engine, supporting several GOST algorithms and public key formats. - Kindly donated by Cryptocom. - [Cryptocom] - - *) Partial support for Issuing Distribution Point CRL extension. CRLs - partitioned by DP are handled but no indirect CRL or reason partitioning - (yet). Complete overhaul of CRL handling: now the most suitable CRL is - selected via a scoring technique which handles IDP and AKID in CRLs. - [Steve Henson] - - *) New X509_STORE_CTX callbacks lookup_crls() and lookup_certs() which - will ultimately be used for all verify operations: this will remove the - X509_STORE dependency on certificate verification and allow alternative - lookup methods. X509_STORE based implementations of these two callbacks. - [Steve Henson] - - *) Allow multiple CRLs to exist in an X509_STORE with matching issuer names. - Modify get_crl() to find a valid (unexpired) CRL if possible. - [Steve Henson] - - *) New function X509_CRL_match() to check if two CRLs are identical. Normally - this would be called X509_CRL_cmp() but that name is already used by - a function that just compares CRL issuer names. Cache several CRL - extensions in X509_CRL structure and cache CRLDP in X509. - [Steve Henson] - - *) Store a "canonical" representation of X509_NAME structure (ASN1 Name) - this maps equivalent X509_NAME structures into a consistent structure. - Name comparison can then be performed rapidly using memcmp(). - [Steve Henson] - - *) Non-blocking OCSP request processing. Add -timeout option to ocsp - utility. - [Steve Henson] - - *) Allow digests to supply their own micalg string for S/MIME type using - the ctrl EVP_MD_CTRL_MICALG. - [Steve Henson] - - *) During PKCS7 signing pass the PKCS7 SignerInfo structure to the - EVP_PKEY_METHOD before and after signing via the EVP_PKEY_CTRL_PKCS7_SIGN - ctrl. It can then customise the structure before and/or after signing - if necessary. - [Steve Henson] - - *) New function OBJ_add_sigid() to allow application defined signature OIDs - to be added to OpenSSLs internal tables. New function OBJ_sigid_free() - to free up any added signature OIDs. - [Steve Henson] - - *) New functions EVP_CIPHER_do_all(), EVP_CIPHER_do_all_sorted(), - EVP_MD_do_all() and EVP_MD_do_all_sorted() to enumerate internal - digest and cipher tables. New options added to openssl utility: - list-message-digest-algorithms and list-cipher-algorithms. - [Steve Henson] - - *) Change the array representation of binary polynomials: the list - of degrees of non-zero coefficients is now terminated with -1. - Previously it was terminated with 0, which was also part of the - value; thus, the array representation was not applicable to - polynomials where t^0 has coefficient zero. This change makes - the array representation useful in a more general context. - [Douglas Stebila] - - *) Various modifications and fixes to SSL/TLS cipher string - handling. For ECC, the code now distinguishes between fixed ECDH - with RSA certificates on the one hand and with ECDSA certificates - on the other hand, since these are separate ciphersuites. The - unused code for Fortezza ciphersuites has been removed. - - For consistency with EDH, ephemeral ECDH is now called "EECDH" - (not "ECDHE"). For consistency with the code for DH - certificates, use of ECDH certificates is now considered ECDH - authentication, not RSA or ECDSA authentication (the latter is - merely the CA's signing algorithm and not actively used in the - protocol). - - The temporary ciphersuite alias "ECCdraft" is no longer - available, and ECC ciphersuites are no longer excluded from "ALL" - and "DEFAULT". The following aliases now exist for RFC 4492 - ciphersuites, most of these by analogy with the DH case: - - kECDHr - ECDH cert, signed with RSA - kECDHe - ECDH cert, signed with ECDSA - kECDH - ECDH cert (signed with either RSA or ECDSA) - kEECDH - ephemeral ECDH - ECDH - ECDH cert or ephemeral ECDH - - aECDH - ECDH cert - aECDSA - ECDSA cert - ECDSA - ECDSA cert - - AECDH - anonymous ECDH - EECDH - non-anonymous ephemeral ECDH (equivalent to "kEECDH:-AECDH") - - [Bodo Moeller] - - *) Add additional S/MIME capabilities for AES and GOST ciphers if supported. - Use correct micalg parameters depending on digest(s) in signed message. - [Steve Henson] - - *) Add engine support for EVP_PKEY_ASN1_METHOD. Add functions to process - an ENGINE asn1 method. Support ENGINE lookups in the ASN1 code. - [Steve Henson] - - *) Initial engine support for EVP_PKEY_METHOD. New functions to permit - an engine to register a method. Add ENGINE lookups for methods and - functional reference processing. - [Steve Henson] - - *) New functions EVP_Digest{Sign,Verify)*. These are enhanced versions of - EVP_{Sign,Verify}* which allow an application to customise the signature - process. - [Steve Henson] - - *) New -resign option to smime utility. This adds one or more signers - to an existing PKCS#7 signedData structure. Also -md option to use an - alternative message digest algorithm for signing. - [Steve Henson] - - *) Tidy up PKCS#7 routines and add new functions to make it easier to - create PKCS7 structures containing multiple signers. Update smime - application to support multiple signers. - [Steve Henson] - - *) New -macalg option to pkcs12 utility to allow setting of an alternative - digest MAC. - [Steve Henson] - - *) Initial support for PKCS#5 v2.0 PRFs other than default SHA1 HMAC. - Reorganize PBE internals to lookup from a static table using NIDs, - add support for HMAC PBE OID translation. Add a EVP_CIPHER ctrl: - EVP_CTRL_PBE_PRF_NID this allows a cipher to specify an alternative - PRF which will be automatically used with PBES2. - [Steve Henson] - - *) Replace the algorithm specific calls to generate keys in "req" with the - new API. - [Steve Henson] - - *) Update PKCS#7 enveloped data routines to use new API. This is now - supported by any public key method supporting the encrypt operation. A - ctrl is added to allow the public key algorithm to examine or modify - the PKCS#7 RecipientInfo structure if it needs to: for RSA this is - a no op. - [Steve Henson] - - *) Add a ctrl to asn1 method to allow a public key algorithm to express - a default digest type to use. In most cases this will be SHA1 but some - algorithms (such as GOST) need to specify an alternative digest. The - return value indicates how strong the preference is 1 means optional and - 2 is mandatory (that is it is the only supported type). Modify - ASN1_item_sign() to accept a NULL digest argument to indicate it should - use the default md. Update openssl utilities to use the default digest - type for signing if it is not explicitly indicated. - [Steve Henson] - - *) Use OID cross reference table in ASN1_sign() and ASN1_verify(). New - EVP_MD flag EVP_MD_FLAG_PKEY_METHOD_SIGNATURE. This uses the relevant - signing method from the key type. This effectively removes the link - between digests and public key types. - [Steve Henson] - - *) Add an OID cross reference table and utility functions. Its purpose is to - translate between signature OIDs such as SHA1WithrsaEncryption and SHA1, - rsaEncryption. This will allow some of the algorithm specific hackery - needed to use the correct OID to be removed. - [Steve Henson] - - *) Remove algorithm specific dependencies when setting PKCS7_SIGNER_INFO - structures for PKCS7_sign(). They are now set up by the relevant public - key ASN1 method. - [Steve Henson] - - *) Add provisional EC pkey method with support for ECDSA and ECDH. - [Steve Henson] - - *) Add support for key derivation (agreement) in the API, DH method and - pkeyutl. - [Steve Henson] - - *) Add DSA pkey method and DH pkey methods, extend DH ASN1 method to support - public and private key formats. As a side effect these add additional - command line functionality not previously available: DSA signatures can be - generated and verified using pkeyutl and DH key support and generation in - pkey, genpkey. - [Steve Henson] - - *) BeOS support. - [Oliver Tappe <zooey@hirschkaefer.de>] - - *) New make target "install_html_docs" installs HTML renditions of the - manual pages. - [Oliver Tappe <zooey@hirschkaefer.de>] - - *) New utility "genpkey" this is analogous to "genrsa" etc except it can - generate keys for any algorithm. Extend and update EVP_PKEY_METHOD to - support key and parameter generation and add initial key generation - functionality for RSA. - [Steve Henson] - - *) Add functions for main EVP_PKEY_method operations. The undocumented - functions EVP_PKEY_{encrypt,decrypt} have been renamed to - EVP_PKEY_{encrypt,decrypt}_old. - [Steve Henson] - - *) Initial definitions for EVP_PKEY_METHOD. This will be a high level public - key API, doesn't do much yet. - [Steve Henson] - - *) New function EVP_PKEY_asn1_get0_info() to retrieve information about - public key algorithms. New option to openssl utility: - "list-public-key-algorithms" to print out info. - [Steve Henson] - - *) Implement the Supported Elliptic Curves Extension for - ECC ciphersuites from draft-ietf-tls-ecc-12.txt. - [Douglas Stebila] - - *) Don't free up OIDs in OBJ_cleanup() if they are in use by EVP_MD or - EVP_CIPHER structures to avoid later problems in EVP_cleanup(). - [Steve Henson] - - *) New utilities pkey and pkeyparam. These are similar to algorithm specific - utilities such as rsa, dsa, dsaparam etc except they process any key - type. - [Steve Henson] - - *) Transfer public key printing routines to EVP_PKEY_ASN1_METHOD. New - functions EVP_PKEY_print_public(), EVP_PKEY_print_private(), - EVP_PKEY_print_param() to print public key data from an EVP_PKEY - structure. - [Steve Henson] - - *) Initial support for pluggable public key ASN1. - De-spaghettify the public key ASN1 handling. Move public and private - key ASN1 handling to a new EVP_PKEY_ASN1_METHOD structure. Relocate - algorithm specific handling to a single module within the relevant - algorithm directory. Add functions to allow (near) opaque processing - of public and private key structures. - [Steve Henson] - - *) Implement the Supported Point Formats Extension for - ECC ciphersuites from draft-ietf-tls-ecc-12.txt. - [Douglas Stebila] - - *) Add initial support for RFC 4279 PSK TLS ciphersuites. Add members - for the psk identity [hint] and the psk callback functions to the - SSL_SESSION, SSL and SSL_CTX structure. - - New ciphersuites: - PSK-RC4-SHA, PSK-3DES-EDE-CBC-SHA, PSK-AES128-CBC-SHA, - PSK-AES256-CBC-SHA - - New functions: - SSL_CTX_use_psk_identity_hint - SSL_get_psk_identity_hint - SSL_get_psk_identity - SSL_use_psk_identity_hint - - [Mika Kousa and Pasi Eronen of Nokia Corporation] - - *) Add RFC 3161 compliant time stamp request creation, response generation - and response verification functionality. - [Zoltán Glózik <zglozik@opentsa.org>, The OpenTSA Project] - - *) Add initial support for TLS extensions, specifically for the server_name - extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now - have new members for a host name. The SSL data structure has an - additional member SSL_CTX *initial_ctx so that new sessions can be - stored in that context to allow for session resumption, even after the - SSL has been switched to a new SSL_CTX in reaction to a client's - server_name extension. - - New functions (subject to change): - - SSL_get_servername() - SSL_get_servername_type() - SSL_set_SSL_CTX() - - New CTRL codes and macros (subject to change): - - SSL_CTRL_SET_TLSEXT_SERVERNAME_CB - - SSL_CTX_set_tlsext_servername_callback() - SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG - - SSL_CTX_set_tlsext_servername_arg() - SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name() - - openssl s_client has a new '-servername ...' option. - - openssl s_server has new options '-servername_host ...', '-cert2 ...', - '-key2 ...', '-servername_fatal' (subject to change). This allows - testing the HostName extension for a specific single host name ('-cert' - and '-key' remain fallbacks for handshakes without HostName - negotiation). If the unrecognized_name alert has to be sent, this by - default is a warning; it becomes fatal with the '-servername_fatal' - option. - - [Peter Sylvester, Remy Allais, Christophe Renou] - - *) Whirlpool hash implementation is added. - [Andy Polyakov] - - *) BIGNUM code on 64-bit SPARCv9 targets is switched from bn(64,64) to - bn(64,32). Because of instruction set limitations it doesn't have - any negative impact on performance. This was done mostly in order - to make it possible to share assembler modules, such as bn_mul_mont - implementations, between 32- and 64-bit builds without hassle. - [Andy Polyakov] - - *) Move code previously exiled into file crypto/ec/ec2_smpt.c - to ec2_smpl.c, and no longer require the OPENSSL_EC_BIN_PT_COMP - macro. - [Bodo Moeller] - - *) New candidate for BIGNUM assembler implementation, bn_mul_mont, - dedicated Montgomery multiplication procedure, is introduced. - BN_MONT_CTX is modified to allow bn_mul_mont to reach for higher - "64-bit" performance on certain 32-bit targets. - [Andy Polyakov] - - *) New option SSL_OP_NO_COMP to disable use of compression selectively - in SSL structures. New SSL ctrl to set maximum send fragment size. - Save memory by setting the I/O buffer sizes dynamically instead of - using the maximum available value. - [Steve Henson] - - *) New option -V for 'openssl ciphers'. This prints the ciphersuite code - in addition to the text details. - [Bodo Moeller] - - *) Very, very preliminary EXPERIMENTAL support for printing of general - ASN1 structures. This currently produces rather ugly output and doesn't - handle several customised structures at all. - [Steve Henson] - - *) Integrated support for PVK file format and some related formats such - as MS PUBLICKEYBLOB and PRIVATEKEYBLOB. Command line switches to support - these in the 'rsa' and 'dsa' utilities. - [Steve Henson] - - *) Support for PKCS#1 RSAPublicKey format on rsa utility command line. - [Steve Henson] - - *) Remove the ancient ASN1_METHOD code. This was only ever used in one - place for the (very old) "NETSCAPE" format certificates which are now - handled using new ASN1 code equivalents. - [Steve Henson] - - *) Let the TLSv1_method() etc. functions return a 'const' SSL_METHOD - pointer and make the SSL_METHOD parameter in SSL_CTX_new, - SSL_CTX_set_ssl_version and SSL_set_ssl_method 'const'. - [Nils Larsch] - - *) Modify CRL distribution points extension code to print out previously - unsupported fields. Enhance extension setting code to allow setting of - all fields. - [Steve Henson] - - *) Add print and set support for Issuing Distribution Point CRL extension. - [Steve Henson] - - *) Change 'Configure' script to enable Camellia by default. - [NTT] - - Changes between 0.9.8m and 0.9.8n [24 Mar 2010] - - *) When rejecting SSL/TLS records due to an incorrect version number, never - update s->server with a new major version number. As of - - OpenSSL 0.9.8m if 'short' is a 16-bit type, - - OpenSSL 0.9.8f if 'short' is longer than 16 bits, - the previous behavior could result in a read attempt at NULL when - receiving specific incorrect SSL/TLS records once record payload - protection is active. (CVE-2010-0740) - [Bodo Moeller, Adam Langley <agl@chromium.org>] - - *) Fix for CVE-2010-0433 where some kerberos enabled versions of OpenSSL - could be crashed if the relevant tables were not present (e.g. chrooted). - [Tomas Hoger <thoger@redhat.com>] - - Changes between 0.9.8l and 0.9.8m [25 Feb 2010] - - *) Always check bn_wexpand() return values for failure. (CVE-2009-3245) - [Martin Olsson, Neel Mehta] - - *) Fix X509_STORE locking: Every 'objs' access requires a lock (to - accommodate for stack sorting, always a write lock!). - [Bodo Moeller] - - *) On some versions of WIN32 Heap32Next is very slow. This can cause - excessive delays in the RAND_poll(): over a minute. As a workaround - include a time check in the inner Heap32Next loop too. - [Steve Henson] - - *) The code that handled flushing of data in SSL/TLS originally used the - BIO_CTRL_INFO ctrl to see if any data was pending first. This caused - the problem outlined in PR#1949. The fix suggested there however can - trigger problems with buggy BIO_CTRL_WPENDING (e.g. some versions - of Apache). So instead simplify the code to flush unconditionally. - This should be fine since flushing with no data to flush is a no op. - [Steve Henson] - - *) Handle TLS versions 2.0 and later properly and correctly use the - highest version of TLS/SSL supported. Although TLS >= 2.0 is some way - off ancient servers have a habit of sticking around for a while... - [Steve Henson] - - *) Modify compression code so it frees up structures without using the - ex_data callbacks. This works around a problem where some applications - call CRYPTO_cleanup_all_ex_data() before application exit (e.g. when - restarting) then use compression (e.g. SSL with compression) later. - This results in significant per-connection memory leaks and - has caused some security issues including CVE-2008-1678 and - CVE-2009-4355. - [Steve Henson] - - *) Constify crypto/cast (i.e., <openssl/cast.h>): a CAST_KEY doesn't - change when encrypting or decrypting. - [Bodo Moeller] - - *) Add option SSL_OP_LEGACY_SERVER_CONNECT which will allow clients to - connect and renegotiate with servers which do not support RI. - Until RI is more widely deployed this option is enabled by default. - [Steve Henson] - - *) Add "missing" ssl ctrls to clear options and mode. - [Steve Henson] - - *) If client attempts to renegotiate and doesn't support RI respond with - a no_renegotiation alert as required by RFC5746. Some renegotiating - TLS clients will continue a connection gracefully when they receive - the alert. Unfortunately OpenSSL mishandled this alert and would hang - waiting for a server hello which it will never receive. Now we treat a - received no_renegotiation alert as a fatal error. This is because - applications requesting a renegotiation might well expect it to succeed - and would have no code in place to handle the server denying it so the - only safe thing to do is to terminate the connection. - [Steve Henson] - - *) Add ctrl macro SSL_get_secure_renegotiation_support() which returns 1 if - peer supports secure renegotiation and 0 otherwise. Print out peer - renegotiation support in s_client/s_server. - [Steve Henson] - - *) Replace the highly broken and deprecated SPKAC certification method with - the updated NID creation version. This should correctly handle UTF8. - [Steve Henson] - - *) Implement RFC5746. Re-enable renegotiation but require the extension - as needed. Unfortunately, SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION - turns out to be a bad idea. It has been replaced by - SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION which can be set with - SSL_CTX_set_options(). This is really not recommended unless you - know what you are doing. - [Eric Rescorla <ekr@networkresonance.com>, Ben Laurie, Steve Henson] - - *) Fixes to stateless session resumption handling. Use initial_ctx when - issuing and attempting to decrypt tickets in case it has changed during - servername handling. Use a non-zero length session ID when attempting - stateless session resumption: this makes it possible to determine if - a resumption has occurred immediately after receiving server hello - (several places in OpenSSL subtly assume this) instead of later in - the handshake. - [Steve Henson] - - *) The functions ENGINE_ctrl(), OPENSSL_isservice(), - CMS_get1_RecipientRequest() and RAND_bytes() can return <=0 on error - fixes for a few places where the return code is not checked - correctly. - [Julia Lawall <julia@diku.dk>] - - *) Add --strict-warnings option to Configure script to include devteam - warnings in other configurations. - [Steve Henson] - - *) Add support for --libdir option and LIBDIR variable in makefiles. This - makes it possible to install openssl libraries in locations which - have names other than "lib", for example "/usr/lib64" which some - systems need. - [Steve Henson, based on patch from Jeremy Utley] - - *) Don't allow the use of leading 0x80 in OIDs. This is a violation of - X690 8.9.12 and can produce some misleading textual output of OIDs. - [Steve Henson, reported by Dan Kaminsky] - - *) Delete MD2 from algorithm tables. This follows the recommendation in - several standards that it is not used in new applications due to - several cryptographic weaknesses. For binary compatibility reasons - the MD2 API is still compiled in by default. - [Steve Henson] - - *) Add compression id to {d2i,i2d}_SSL_SESSION so it is correctly saved - and restored. - [Steve Henson] - - *) Rename uni2asc and asc2uni functions to OPENSSL_uni2asc and - OPENSSL_asc2uni conditionally on Netware platforms to avoid a name - clash. - [Guenter <lists@gknw.net>] - - *) Fix the server certificate chain building code to use X509_verify_cert(), - it used to have an ad-hoc builder which was unable to cope with anything - other than a simple chain. - [David Woodhouse <dwmw2@infradead.org>, Steve Henson] - - *) Don't check self signed certificate signatures in X509_verify_cert() - by default (a flag can override this): it just wastes time without - adding any security. As a useful side effect self signed root CAs - with non-FIPS digests are now usable in FIPS mode. - [Steve Henson] - - *) In dtls1_process_out_of_seq_message() the check if the current message - is already buffered was missing. For every new message was memory - allocated, allowing an attacker to perform an denial of service attack - with sending out of seq handshake messages until there is no memory - left. Additionally every future message was buffered, even if the - sequence number made no sense and would be part of another handshake. - So only messages with sequence numbers less than 10 in advance will be - buffered. (CVE-2009-1378) - [Robin Seggelmann, discovered by Daniel Mentz] - - *) Records are buffered if they arrive with a future epoch to be - processed after finishing the corresponding handshake. There is - currently no limitation to this buffer allowing an attacker to perform - a DOS attack with sending records with future epochs until there is no - memory left. This patch adds the pqueue_size() function to determine - the size of a buffer and limits the record buffer to 100 entries. - (CVE-2009-1377) - [Robin Seggelmann, discovered by Daniel Mentz] - - *) Keep a copy of frag->msg_header.frag_len so it can be used after the - parent structure is freed. (CVE-2009-1379) - [Daniel Mentz] - - *) Handle non-blocking I/O properly in SSL_shutdown() call. - [Darryl Miles <darryl-mailinglists@netbauds.net>] - - *) Add 2.5.4.* OIDs - [Ilya O. <vrghost@gmail.com>] - - Changes between 0.9.8k and 0.9.8l [5 Nov 2009] - - *) Disable renegotiation completely - this fixes a severe security - problem (CVE-2009-3555) at the cost of breaking all - renegotiation. Renegotiation can be re-enabled by setting - SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION in s3->flags at - run-time. This is really not recommended unless you know what - you're doing. - [Ben Laurie] - - Changes between 0.9.8j and 0.9.8k [25 Mar 2009] - - *) Don't set val to NULL when freeing up structures, it is freed up by - underlying code. If sizeof(void *) > sizeof(long) this can result in - zeroing past the valid field. (CVE-2009-0789) - [Paolo Ganci <Paolo.Ganci@AdNovum.CH>] - - *) Fix bug where return value of CMS_SignerInfo_verify_content() was not - checked correctly. This would allow some invalid signed attributes to - appear to verify correctly. (CVE-2009-0591) - [Ivan Nestlerode <inestlerode@us.ibm.com>] - - *) Reject UniversalString and BMPString types with invalid lengths. This - prevents a crash in ASN1_STRING_print_ex() which assumes the strings have - a legal length. (CVE-2009-0590) - [Steve Henson] - - *) Set S/MIME signing as the default purpose rather than setting it - unconditionally. This allows applications to override it at the store - level. - [Steve Henson] - - *) Permit restricted recursion of ASN1 strings. This is needed in practice - to handle some structures. - [Steve Henson] - - *) Improve efficiency of mem_gets: don't search whole buffer each time - for a '\n' - [Jeremy Shapiro <jnshapir@us.ibm.com>] - - *) New -hex option for openssl rand. - [Matthieu Herrb] - - *) Print out UTF8String and NumericString when parsing ASN1. - [Steve Henson] - - *) Support NumericString type for name components. - [Steve Henson] - - *) Allow CC in the environment to override the automatically chosen - compiler. Note that nothing is done to ensure flags work with the - chosen compiler. - [Ben Laurie] - - Changes between 0.9.8i and 0.9.8j [07 Jan 2009] - - *) Properly check EVP_VerifyFinal() and similar return values - (CVE-2008-5077). - [Ben Laurie, Bodo Moeller, Google Security Team] - - *) Enable TLS extensions by default. - [Ben Laurie] - - *) Allow the CHIL engine to be loaded, whether the application is - multithreaded or not. (This does not release the developer from the - obligation to set up the dynamic locking callbacks.) - [Sander Temme <sander@temme.net>] - - *) Use correct exit code if there is an error in dgst command. - [Steve Henson; problem pointed out by Roland Dirlewanger] - - *) Tweak Configure so that you need to say "experimental-jpake" to enable - JPAKE, and need to use -DOPENSSL_EXPERIMENTAL_JPAKE in applications. - [Bodo Moeller] - - *) Add experimental JPAKE support, including demo authentication in - s_client and s_server. - [Ben Laurie] - - *) Set the comparison function in v3_addr_canonize(). - [Rob Austein <sra@hactrn.net>] - - *) Add support for XMPP STARTTLS in s_client. - [Philip Paeps <philip@freebsd.org>] - - *) Change the server-side SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG behavior - to ensure that even with this option, only ciphersuites in the - server's preference list will be accepted. (Note that the option - applies only when resuming a session, so the earlier behavior was - just about the algorithm choice for symmetric cryptography.) - [Bodo Moeller] - - Changes between 0.9.8h and 0.9.8i [15 Sep 2008] - - *) Fix NULL pointer dereference if a DTLS server received - ChangeCipherSpec as first record (CVE-2009-1386). - [PR #1679] - - *) Fix a state transition in s3_srvr.c and d1_srvr.c - (was using SSL3_ST_CW_CLNT_HELLO_B, should be ..._ST_SW_SRVR_...). - [Nagendra Modadugu] - - *) The fix in 0.9.8c that supposedly got rid of unsafe - double-checked locking was incomplete for RSA blinding, - addressing just one layer of what turns out to have been - doubly unsafe triple-checked locking. - - So now fix this for real by retiring the MONT_HELPER macro - in crypto/rsa/rsa_eay.c. - - [Bodo Moeller; problem pointed out by Marius Schilder] - - *) Various precautionary measures: - - - Avoid size_t integer overflow in HASH_UPDATE (md32_common.h). - - - Avoid a buffer overflow in d2i_SSL_SESSION() (ssl_asn1.c). - (NB: This would require knowledge of the secret session ticket key - to exploit, in which case you'd be SOL either way.) - - - Change bn_nist.c so that it will properly handle input BIGNUMs - outside the expected range. - - - Enforce the 'num' check in BN_div() (bn_div.c) for non-BN_DEBUG - builds. - - [Neel Mehta, Bodo Moeller] - - *) Allow engines to be "soft loaded" - i.e. optionally don't die if - the load fails. Useful for distros. - [Ben Laurie and the FreeBSD team] - - *) Add support for Local Machine Keyset attribute in PKCS#12 files. - [Steve Henson] - - *) Fix BN_GF2m_mod_arr() top-bit cleanup code. - [Huang Ying] - - *) Expand ENGINE to support engine supplied SSL client certificate functions. - - This work was sponsored by Logica. - [Steve Henson] - - *) Add CryptoAPI ENGINE to support use of RSA and DSA keys held in Windows - keystores. Support for SSL/TLS client authentication too. - Not compiled unless enable-capieng specified to Configure. - - This work was sponsored by Logica. - [Steve Henson] - - *) Fix bug in X509_ATTRIBUTE creation: don't set attribute using - ASN1_TYPE_set1 if MBSTRING flag set. This bug would crash certain - attribute creation routines such as certificate requests and PKCS#12 - files. - [Steve Henson] - - Changes between 0.9.8g and 0.9.8h [28 May 2008] - - *) Fix flaw if 'Server Key exchange message' is omitted from a TLS - handshake which could lead to a client crash as found using the - Codenomicon TLS test suite (CVE-2008-1672) - [Steve Henson, Mark Cox] - - *) Fix double free in TLS server name extensions which could lead to - a remote crash found by Codenomicon TLS test suite (CVE-2008-0891) - [Joe Orton] - - *) Clear error queue in SSL_CTX_use_certificate_chain_file() - - Clear the error queue to ensure that error entries left from - older function calls do not interfere with the correct operation. - [Lutz Jaenicke, Erik de Castro Lopo] - - *) Remove root CA certificates of commercial CAs: - - The OpenSSL project does not recommend any specific CA and does not - have any policy with respect to including or excluding any CA. - Therefore it does not make any sense to ship an arbitrary selection - of root CA certificates with the OpenSSL software. - [Lutz Jaenicke] - - *) RSA OAEP patches to fix two separate invalid memory reads. - The first one involves inputs when 'lzero' is greater than - 'SHA_DIGEST_LENGTH' (it would read about SHA_DIGEST_LENGTH bytes - before the beginning of from). The second one involves inputs where - the 'db' section contains nothing but zeroes (there is a one-byte - invalid read after the end of 'db'). - [Ivan Nestlerode <inestlerode@us.ibm.com>] - - *) Partial backport from 0.9.9-dev: - - Introduce bn_mul_mont (dedicated Montgomery multiplication - procedure) as a candidate for BIGNUM assembler implementation. - While 0.9.9-dev uses assembler for various architectures, only - x86_64 is available by default here in the 0.9.8 branch, and - 32-bit x86 is available through a compile-time setting. - - To try the 32-bit x86 assembler implementation, use Configure - option "enable-montasm" (which exists only for this backport). - - As "enable-montasm" for 32-bit x86 disclaims code stability - anyway, in this constellation we activate additional code - backported from 0.9.9-dev for further performance improvements, - namely BN_from_montgomery_word. (To enable this otherwise, - e.g. x86_64, try "-DMONT_FROM_WORD___NON_DEFAULT_0_9_8_BUILD".) - - [Andy Polyakov (backport partially by Bodo Moeller)] - - *) Add TLS session ticket callback. This allows an application to set - TLS ticket cipher and HMAC keys rather than relying on hardcoded fixed - values. This is useful for key rollover for example where several key - sets may exist with different names. - [Steve Henson] - - *) Reverse ENGINE-internal logic for caching default ENGINE handles. - This was broken until now in 0.9.8 releases, such that the only way - a registered ENGINE could be used (assuming it initialises - successfully on the host) was to explicitly set it as the default - for the relevant algorithms. This is in contradiction with 0.9.7 - behaviour and the documentation. With this fix, when an ENGINE is - registered into a given algorithm's table of implementations, the - 'uptodate' flag is reset so that auto-discovery will be used next - time a new context for that algorithm attempts to select an - implementation. - [Ian Lister (tweaked by Geoff Thorpe)] - - *) Backport of CMS code to OpenSSL 0.9.8. This differs from the 0.9.9 - implementation in the following ways: - - Lack of EVP_PKEY_ASN1_METHOD means algorithm parameters have to be - hard coded. - - Lack of BER streaming support means one pass streaming processing is - only supported if data is detached: setting the streaming flag is - ignored for embedded content. - - CMS support is disabled by default and must be explicitly enabled - with the enable-cms configuration option. - [Steve Henson] - - *) Update the GMP engine glue to do direct copies between BIGNUM and - mpz_t when openssl and GMP use the same limb size. Otherwise the - existing "conversion via a text string export" trick is still used. - [Paul Sheer <paulsheer@gmail.com>] - - *) Zlib compression BIO. This is a filter BIO which compressed and - uncompresses any data passed through it. - [Steve Henson] - - *) Add AES_wrap_key() and AES_unwrap_key() functions to implement - RFC3394 compatible AES key wrapping. - [Steve Henson] - - *) Add utility functions to handle ASN1 structures. ASN1_STRING_set0(): - sets string data without copying. X509_ALGOR_set0() and - X509_ALGOR_get0(): set and retrieve X509_ALGOR (AlgorithmIdentifier) - data. Attribute function X509at_get0_data_by_OBJ(): retrieves data - from an X509_ATTRIBUTE structure optionally checking it occurs only - once. ASN1_TYPE_set1(): set and ASN1_TYPE structure copying supplied - data. - [Steve Henson] - - *) Fix BN flag handling in RSA_eay_mod_exp() and BN_MONT_CTX_set() - to get the expected BN_FLG_CONSTTIME behavior. - [Bodo Moeller (Google)] - - *) Netware support: - - - fixed wrong usage of ioctlsocket() when build for LIBC BSD sockets - - fixed do_tests.pl to run the test suite with CLIB builds too (CLIB_OPT) - - added some more tests to do_tests.pl - - fixed RunningProcess usage so that it works with newer LIBC NDKs too - - removed usage of BN_LLONG for CLIB builds to avoid runtime dependency - - added new Configure targets netware-clib-bsdsock, netware-clib-gcc, - netware-clib-bsdsock-gcc, netware-libc-bsdsock-gcc - - various changes to netware.pl to enable gcc-cross builds on Win32 - platform - - changed crypto/bio/b_sock.c to work with macro functions (CLIB BSD) - - various changes to fix missing prototype warnings - - fixed x86nasm.pl to create correct asm files for NASM COFF output - - added AES, WHIRLPOOL and CPUID assembler code to build files - - added missing AES assembler make rules to mk1mf.pl - - fixed order of includes in apps/ocsp.c so that e_os.h settings apply - [Guenter Knauf <eflash@gmx.net>] - - *) Implement certificate status request TLS extension defined in RFC3546. - A client can set the appropriate parameters and receive the encoded - OCSP response via a callback. A server can query the supplied parameters - and set the encoded OCSP response in the callback. Add simplified examples - to s_client and s_server. - [Steve Henson] - - Changes between 0.9.8f and 0.9.8g [19 Oct 2007] - - *) Fix various bugs: - + Binary incompatibility of ssl_ctx_st structure - + DTLS interoperation with non-compliant servers - + Don't call get_session_cb() without proposed session - + Fix ia64 assembler code - [Andy Polyakov, Steve Henson] - - Changes between 0.9.8e and 0.9.8f [11 Oct 2007] - - *) DTLS Handshake overhaul. There were longstanding issues with - OpenSSL DTLS implementation, which were making it impossible for - RFC 4347 compliant client to communicate with OpenSSL server. - Unfortunately just fixing these incompatibilities would "cut off" - pre-0.9.8f clients. To allow for hassle free upgrade post-0.9.8e - server keeps tolerating non RFC compliant syntax. The opposite is - not true, 0.9.8f client can not communicate with earlier server. - This update even addresses CVE-2007-4995. - [Andy Polyakov] - - *) Changes to avoid need for function casts in OpenSSL: some compilers - (gcc 4.2 and later) reject their use. - [Kurt Roeckx <kurt@roeckx.be>, Peter Hartley <pdh@utter.chaos.org.uk>, - Steve Henson] - - *) Add RFC4507 support to OpenSSL. This includes the corrections in - RFC4507bis. The encrypted ticket format is an encrypted encoded - SSL_SESSION structure, that way new session features are automatically - supported. - - If a client application caches session in an SSL_SESSION structure - support is transparent because tickets are now stored in the encoded - SSL_SESSION. - - The SSL_CTX structure automatically generates keys for ticket - protection in servers so again support should be possible - with no application modification. - - If a client or server wishes to disable RFC4507 support then the option - SSL_OP_NO_TICKET can be set. - - Add a TLS extension debugging callback to allow the contents of any client - or server extensions to be examined. - - This work was sponsored by Google. - [Steve Henson] - - *) Add initial support for TLS extensions, specifically for the server_name - extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now - have new members for a host name. The SSL data structure has an - additional member SSL_CTX *initial_ctx so that new sessions can be - stored in that context to allow for session resumption, even after the - SSL has been switched to a new SSL_CTX in reaction to a client's - server_name extension. - - New functions (subject to change): - - SSL_get_servername() - SSL_get_servername_type() - SSL_set_SSL_CTX() - - New CTRL codes and macros (subject to change): - - SSL_CTRL_SET_TLSEXT_SERVERNAME_CB - - SSL_CTX_set_tlsext_servername_callback() - SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG - - SSL_CTX_set_tlsext_servername_arg() - SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name() - - openssl s_client has a new '-servername ...' option. - - openssl s_server has new options '-servername_host ...', '-cert2 ...', - '-key2 ...', '-servername_fatal' (subject to change). This allows - testing the HostName extension for a specific single host name ('-cert' - and '-key' remain fallbacks for handshakes without HostName - negotiation). If the unrecognized_name alert has to be sent, this by - default is a warning; it becomes fatal with the '-servername_fatal' - option. - - [Peter Sylvester, Remy Allais, Christophe Renou, Steve Henson] - - *) Add AES and SSE2 assembly language support to VC++ build. - [Steve Henson] - - *) Mitigate attack on final subtraction in Montgomery reduction. - [Andy Polyakov] - - *) Fix crypto/ec/ec_mult.c to work properly with scalars of value 0 - (which previously caused an internal error). - [Bodo Moeller] - - *) Squeeze another 10% out of IGE mode when in != out. - [Ben Laurie] - - *) AES IGE mode speedup. - [Dean Gaudet (Google)] - - *) Add the Korean symmetric 128-bit cipher SEED (see - http://www.kisa.or.kr/kisa/seed/jsp/seed_eng.jsp) and - add SEED ciphersuites from RFC 4162: - - TLS_RSA_WITH_SEED_CBC_SHA = "SEED-SHA" - TLS_DHE_DSS_WITH_SEED_CBC_SHA = "DHE-DSS-SEED-SHA" - TLS_DHE_RSA_WITH_SEED_CBC_SHA = "DHE-RSA-SEED-SHA" - TLS_DH_anon_WITH_SEED_CBC_SHA = "ADH-SEED-SHA" - - To minimize changes between patchlevels in the OpenSSL 0.9.8 - series, SEED remains excluded from compilation unless OpenSSL - is configured with 'enable-seed'. - [KISA, Bodo Moeller] - - *) Mitigate branch prediction attacks, which can be practical if a - single processor is shared, allowing a spy process to extract - information. For detailed background information, see - http://eprint.iacr.org/2007/039 (O. Aciicmez, S. Gueron, - J.-P. Seifert, "New Branch Prediction Vulnerabilities in OpenSSL - and Necessary Software Countermeasures"). The core of the change - are new versions BN_div_no_branch() and - BN_mod_inverse_no_branch() of BN_div() and BN_mod_inverse(), - respectively, which are slower, but avoid the security-relevant - conditional branches. These are automatically called by BN_div() - and BN_mod_inverse() if the flag BN_FLG_CONSTTIME is set for one - of the input BIGNUMs. Also, BN_is_bit_set() has been changed to - remove a conditional branch. - - BN_FLG_CONSTTIME is the new name for the previous - BN_FLG_EXP_CONSTTIME flag, since it now affects more than just - modular exponentiation. (Since OpenSSL 0.9.7h, setting this flag - in the exponent causes BN_mod_exp_mont() to use the alternative - implementation in BN_mod_exp_mont_consttime().) The old name - remains as a deprecated alias. - - Similarly, RSA_FLAG_NO_EXP_CONSTTIME is replaced by a more general - RSA_FLAG_NO_CONSTTIME flag since the RSA implementation now uses - constant-time implementations for more than just exponentiation. - Here too the old name is kept as a deprecated alias. - - BN_BLINDING_new() will now use BN_dup() for the modulus so that - the BN_BLINDING structure gets an independent copy of the - modulus. This means that the previous "BIGNUM *m" argument to - BN_BLINDING_new() and to BN_BLINDING_create_param() now - essentially becomes "const BIGNUM *m", although we can't actually - change this in the header file before 0.9.9. It allows - RSA_setup_blinding() to use BN_with_flags() on the modulus to - enable BN_FLG_CONSTTIME. - - [Matthew D Wood (Intel Corp)] - - *) In the SSL/TLS server implementation, be strict about session ID - context matching (which matters if an application uses a single - external cache for different purposes). Previously, - out-of-context reuse was forbidden only if SSL_VERIFY_PEER was - set. This did ensure strict client verification, but meant that, - with applications using a single external cache for quite - different requirements, clients could circumvent ciphersuite - restrictions for a given session ID context by starting a session - in a different context. - [Bodo Moeller] - - *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that - a ciphersuite string such as "DEFAULT:RSA" cannot enable - authentication-only ciphersuites. - [Bodo Moeller] - - *) Update the SSL_get_shared_ciphers() fix CVE-2006-3738 which was - not complete and could lead to a possible single byte overflow - (CVE-2007-5135) [Ben Laurie] - - Changes between 0.9.8d and 0.9.8e [23 Feb 2007] - - *) Since AES128 and AES256 (and similarly Camellia128 and - Camellia256) share a single mask bit in the logic of - ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a - kludge to work properly if AES128 is available and AES256 isn't - (or if Camellia128 is available and Camellia256 isn't). - [Victor Duchovni] - - *) Fix the BIT STRING encoding generated by crypto/ec/ec_asn1.c - (within i2d_ECPrivateKey, i2d_ECPKParameters, i2d_ECParameters): - When a point or a seed is encoded in a BIT STRING, we need to - prevent the removal of trailing zero bits to get the proper DER - encoding. (By default, crypto/asn1/a_bitstr.c assumes the case - of a NamedBitList, for which trailing 0 bits need to be removed.) - [Bodo Moeller] - - *) Have SSL/TLS server implementation tolerate "mismatched" record - protocol version while receiving ClientHello even if the - ClientHello is fragmented. (The server can't insist on the - particular protocol version it has chosen before the ServerHello - message has informed the client about his choice.) - [Bodo Moeller] - - *) Add RFC 3779 support. - [Rob Austein for ARIN, Ben Laurie] - - *) Load error codes if they are not already present instead of using a - static variable. This allows them to be cleanly unloaded and reloaded. - Improve header file function name parsing. - [Steve Henson] - - *) extend SMTP and IMAP protocol emulation in s_client to use EHLO - or CAPABILITY handshake as required by RFCs. - [Goetz Babin-Ebell] - - Changes between 0.9.8c and 0.9.8d [28 Sep 2006] - - *) Introduce limits to prevent malicious keys being able to - cause a denial of service. (CVE-2006-2940) - [Steve Henson, Bodo Moeller] - - *) Fix ASN.1 parsing of certain invalid structures that can result - in a denial of service. (CVE-2006-2937) [Steve Henson] - - *) Fix buffer overflow in SSL_get_shared_ciphers() function. - (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team] - - *) Fix SSL client code which could crash if connecting to a - malicious SSLv2 server. (CVE-2006-4343) - [Tavis Ormandy and Will Drewry, Google Security Team] - - *) Since 0.9.8b, ciphersuite strings naming explicit ciphersuites - match only those. Before that, "AES256-SHA" would be interpreted - as a pattern and match "AES128-SHA" too (since AES128-SHA got - the same strength classification in 0.9.7h) as we currently only - have a single AES bit in the ciphersuite description bitmap. - That change, however, also applied to ciphersuite strings such as - "RC4-MD5" that intentionally matched multiple ciphersuites -- - namely, SSL 2.0 ciphersuites in addition to the more common ones - from SSL 3.0/TLS 1.0. - - So we change the selection algorithm again: Naming an explicit - ciphersuite selects this one ciphersuite, and any other similar - ciphersuite (same bitmap) from *other* protocol versions. - Thus, "RC4-MD5" again will properly select both the SSL 2.0 - ciphersuite and the SSL 3.0/TLS 1.0 ciphersuite. - - Since SSL 2.0 does not have any ciphersuites for which the - 128/256 bit distinction would be relevant, this works for now. - The proper fix will be to use different bits for AES128 and - AES256, which would have avoided the problems from the beginning; - however, bits are scarce, so we can only do this in a new release - (not just a patchlevel) when we can change the SSL_CIPHER - definition to split the single 'unsigned long mask' bitmap into - multiple values to extend the available space. - - [Bodo Moeller] - - Changes between 0.9.8b and 0.9.8c [05 Sep 2006] - - *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher - (CVE-2006-4339) [Ben Laurie and Google Security Team] - - *) Add AES IGE and biIGE modes. - [Ben Laurie] - - *) Change the Unix randomness entropy gathering to use poll() when - possible instead of select(), since the latter has some - undesirable limitations. - [Darryl Miles via Richard Levitte and Bodo Moeller] - - *) Disable "ECCdraft" ciphersuites more thoroughly. Now special - treatment in ssl/ssl_ciph.s makes sure that these ciphersuites - cannot be implicitly activated as part of, e.g., the "AES" alias. - However, please upgrade to OpenSSL 0.9.9[-dev] for - non-experimental use of the ECC ciphersuites to get TLS extension - support, which is required for curve and point format negotiation - to avoid potential handshake problems. - [Bodo Moeller] - - *) Disable rogue ciphersuites: - - - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5") - - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5") - - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5") - - The latter two were purportedly from - draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really - appear there. - - Also deactivate the remaining ciphersuites from - draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as - unofficial, and the ID has long expired. - [Bodo Moeller] - - *) Fix RSA blinding Heisenbug (problems sometimes occurred on - dual-core machines) and other potential thread-safety issues. - [Bodo Moeller] - - *) Add the symmetric cipher Camellia (128-bit, 192-bit, 256-bit key - versions), which is now available for royalty-free use - (see http://info.isl.ntt.co.jp/crypt/eng/info/chiteki.html). - Also, add Camellia TLS ciphersuites from RFC 4132. - - To minimize changes between patchlevels in the OpenSSL 0.9.8 - series, Camellia remains excluded from compilation unless OpenSSL - is configured with 'enable-camellia'. - [NTT] - - *) Disable the padding bug check when compression is in use. The padding - bug check assumes the first packet is of even length, this is not - necessarily true if compression is enabled and can result in false - positives causing handshake failure. The actual bug test is ancient - code so it is hoped that implementations will either have fixed it by - now or any which still have the bug do not support compression. - [Steve Henson] - - Changes between 0.9.8a and 0.9.8b [04 May 2006] - - *) When applying a cipher rule check to see if string match is an explicit - cipher suite and only match that one cipher suite if it is. - [Steve Henson] - - *) Link in manifests for VC++ if needed. - [Austin Ziegler <halostatue@gmail.com>] - - *) Update support for ECC-based TLS ciphersuites according to - draft-ietf-tls-ecc-12.txt with proposed changes (but without - TLS extensions, which are supported starting with the 0.9.9 - branch, not in the OpenSSL 0.9.8 branch). - [Douglas Stebila] - - *) New functions EVP_CIPHER_CTX_new() and EVP_CIPHER_CTX_free() to support - opaque EVP_CIPHER_CTX handling. - [Steve Henson] - - *) Fixes and enhancements to zlib compression code. We now only use - "zlib1.dll" and use the default __cdecl calling convention on Win32 - to conform with the standards mentioned here: - http://www.zlib.net/DLL_FAQ.txt - Static zlib linking now works on Windows and the new --with-zlib-include - --with-zlib-lib options to Configure can be used to supply the location - of the headers and library. Gracefully handle case where zlib library - can't be loaded. - [Steve Henson] - - *) Several fixes and enhancements to the OID generation code. The old code - sometimes allowed invalid OIDs (1.X for X >= 40 for example), couldn't - handle numbers larger than ULONG_MAX, truncated printing and had a - non standard OBJ_obj2txt() behaviour. - [Steve Henson] - - *) Add support for building of engines under engine/ as shared libraries - under VC++ build system. - [Steve Henson] - - *) Corrected the numerous bugs in the Win32 path splitter in DSO. - Hopefully, we will not see any false combination of paths any more. - [Richard Levitte] - - Changes between 0.9.8 and 0.9.8a [11 Oct 2005] - - *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING - (part of SSL_OP_ALL). This option used to disable the - countermeasure against man-in-the-middle protocol-version - rollback in the SSL 2.0 server implementation, which is a bad - idea. (CVE-2005-2969) - - [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center - for Information Security, National Institute of Advanced Industrial - Science and Technology [AIST], Japan)] - - *) Add two function to clear and return the verify parameter flags. - [Steve Henson] - - *) Keep cipherlists sorted in the source instead of sorting them at - runtime, thus removing the need for a lock. - [Nils Larsch] - - *) Avoid some small subgroup attacks in Diffie-Hellman. - [Nick Mathewson and Ben Laurie] - - *) Add functions for well-known primes. - [Nick Mathewson] - - *) Extended Windows CE support. - [Satoshi Nakamura and Andy Polyakov] - - *) Initialize SSL_METHOD structures at compile time instead of during - runtime, thus removing the need for a lock. - [Steve Henson] - - *) Make PKCS7_decrypt() work even if no certificate is supplied by - attempting to decrypt each encrypted key in turn. Add support to - smime utility. - [Steve Henson] - - Changes between 0.9.7h and 0.9.8 [05 Jul 2005] - - [NB: OpenSSL 0.9.7i and later 0.9.7 patch levels were released after - OpenSSL 0.9.8.] - - *) Add libcrypto.pc and libssl.pc for those who feel they need them. - [Richard Levitte] - - *) Change CA.sh and CA.pl so they don't bundle the CSR and the private - key into the same file any more. - [Richard Levitte] - - *) Add initial support for Win64, both IA64 and AMD64/x64 flavors. - [Andy Polyakov] - - *) Add -utf8 command line and config file option to 'ca'. - [Stefan <stf@udoma.org] - - *) Removed the macro des_crypt(), as it seems to conflict with some - libraries. Use DES_crypt(). - [Richard Levitte] - - *) Correct naming of the 'chil' and '4758cca' ENGINEs. This - involves renaming the source and generated shared-libs for - both. The engines will accept the corrected or legacy ids - ('ncipher' and '4758_cca' respectively) when binding. NB, - this only applies when building 'shared'. - [Corinna Vinschen <vinschen@redhat.com> and Geoff Thorpe] - - *) Add attribute functions to EVP_PKEY structure. Modify - PKCS12_create() to recognize a CSP name attribute and - use it. Make -CSP option work again in pkcs12 utility. - [Steve Henson] - - *) Add new functionality to the bn blinding code: - - automatic re-creation of the BN_BLINDING parameters after - a fixed number of uses (currently 32) - - add new function for parameter creation - - introduce flags to control the update behaviour of the - BN_BLINDING parameters - - hide BN_BLINDING structure - Add a second BN_BLINDING slot to the RSA structure to improve - performance when a single RSA object is shared among several - threads. - [Nils Larsch] - - *) Add support for DTLS. - [Nagendra Modadugu <nagendra@cs.stanford.edu> and Ben Laurie] - - *) Add support for DER encoded private keys (SSL_FILETYPE_ASN1) - to SSL_CTX_use_PrivateKey_file() and SSL_use_PrivateKey_file() - [Walter Goulet] - - *) Remove buggy and incomplete DH cert support from - ssl/ssl_rsa.c and ssl/s3_both.c - [Nils Larsch] - - *) Use SHA-1 instead of MD5 as the default digest algorithm for - the apps/openssl applications. - [Nils Larsch] - - *) Compile clean with "-Wall -Wmissing-prototypes - -Wstrict-prototypes -Wmissing-declarations -Werror". Currently - DEBUG_SAFESTACK must also be set. - [Ben Laurie] - - *) Change ./Configure so that certain algorithms can be disabled by default. - The new counterpiece to "no-xxx" is "enable-xxx". - - The patented RC5 and MDC2 algorithms will now be disabled unless - "enable-rc5" and "enable-mdc2", respectively, are specified. - - (IDEA remains enabled despite being patented. This is because IDEA - is frequently required for interoperability, and there is no license - fee for non-commercial use. As before, "no-idea" can be used to - avoid this algorithm.) - - [Bodo Moeller] - - *) Add processing of proxy certificates (see RFC 3820). This work was - sponsored by KTH (The Royal Institute of Technology in Stockholm) and - EGEE (Enabling Grids for E-science in Europe). - [Richard Levitte] - - *) RC4 performance overhaul on modern architectures/implementations, such - as Intel P4, IA-64 and AMD64. - [Andy Polyakov] - - *) New utility extract-section.pl. This can be used specify an alternative - section number in a pod file instead of having to treat each file as - a separate case in Makefile. This can be done by adding two lines to the - pod file: - - =for comment openssl_section:XXX - - The blank line is mandatory. - - [Steve Henson] - - *) New arguments -certform, -keyform and -pass for s_client and s_server - to allow alternative format key and certificate files and passphrase - sources. - [Steve Henson] - - *) New structure X509_VERIFY_PARAM which combines current verify parameters, - update associated structures and add various utility functions. - - Add new policy related verify parameters, include policy checking in - standard verify code. Enhance 'smime' application with extra parameters - to support policy checking and print out. - [Steve Henson] - - *) Add a new engine to support VIA PadLock ACE extensions in the VIA C3 - Nehemiah processors. These extensions support AES encryption in hardware - as well as RNG (though RNG support is currently disabled). - [Michal Ludvig <michal@logix.cz>, with help from Andy Polyakov] - - *) Deprecate BN_[get|set]_params() functions (they were ignored internally). - [Geoff Thorpe] - - *) New FIPS 180-2 algorithms, SHA-224/-256/-384/-512 are implemented. - [Andy Polyakov and a number of other people] - - *) Improved PowerPC platform support. Most notably BIGNUM assembler - implementation contributed by IBM. - [Suresh Chari, Peter Waltenberg, Andy Polyakov] - - *) The new 'RSA_generate_key_ex' function now takes a BIGNUM for the public - exponent rather than 'unsigned long'. There is a corresponding change to - the new 'rsa_keygen' element of the RSA_METHOD structure. - [Jelte Jansen, Geoff Thorpe] - - *) Functionality for creating the initial serial number file is now - moved from CA.pl to the 'ca' utility with a new option -create_serial. - - (Before OpenSSL 0.9.7e, CA.pl used to initialize the serial - number file to 1, which is bound to cause problems. To avoid - the problems while respecting compatibility between different 0.9.7 - patchlevels, 0.9.7e employed 'openssl x509 -next_serial' in - CA.pl for serial number initialization. With the new release 0.9.8, - we can fix the problem directly in the 'ca' utility.) - [Steve Henson] - - *) Reduced header interdependencies by declaring more opaque objects in - ossl_typ.h. As a consequence, including some headers (eg. engine.h) will - give fewer recursive includes, which could break lazy source code - so - this change is covered by the OPENSSL_NO_DEPRECATED symbol. As always, - developers should define this symbol when building and using openssl to - ensure they track the recommended behaviour, interfaces, [etc], but - backwards-compatible behaviour prevails when this isn't defined. - [Geoff Thorpe] - - *) New function X509_POLICY_NODE_print() which prints out policy nodes. - [Steve Henson] - - *) Add new EVP function EVP_CIPHER_CTX_rand_key and associated functionality. - This will generate a random key of the appropriate length based on the - cipher context. The EVP_CIPHER can provide its own random key generation - routine to support keys of a specific form. This is used in the des and - 3des routines to generate a key of the correct parity. Update S/MIME - code to use new functions and hence generate correct parity DES keys. - Add EVP_CHECK_DES_KEY #define to return an error if the key is not - valid (weak or incorrect parity). - [Steve Henson] - - *) Add a local set of CRLs that can be used by X509_verify_cert() as well - as looking them up. This is useful when the verified structure may contain - CRLs, for example PKCS#7 signedData. Modify PKCS7_verify() to use any CRLs - present unless the new PKCS7_NO_CRL flag is asserted. - [Steve Henson] - - *) Extend ASN1 oid configuration module. It now additionally accepts the - syntax: - - shortName = some long name, 1.2.3.4 - [Steve Henson] - - *) Reimplemented the BN_CTX implementation. There is now no more static - limitation on the number of variables it can handle nor the depth of the - "stack" handling for BN_CTX_start()/BN_CTX_end() pairs. The stack - information can now expand as required, and rather than having a single - static array of bignums, BN_CTX now uses a linked-list of such arrays - allowing it to expand on demand whilst maintaining the usefulness of - BN_CTX's "bundling". - [Geoff Thorpe] - - *) Add a missing BN_CTX parameter to the 'rsa_mod_exp' callback in RSA_METHOD - to allow all RSA operations to function using a single BN_CTX. - [Geoff Thorpe] - - *) Preliminary support for certificate policy evaluation and checking. This - is initially intended to pass the tests outlined in "Conformance Testing - of Relying Party Client Certificate Path Processing Logic" v1.07. - [Steve Henson] - - *) bn_dup_expand() has been deprecated, it was introduced in 0.9.7 and - remained unused and not that useful. A variety of other little bignum - tweaks and fixes have also been made continuing on from the audit (see - below). - [Geoff Thorpe] - - *) Constify all or almost all d2i, c2i, s2i and r2i functions, along with - associated ASN1, EVP and SSL functions and old ASN1 macros. - [Richard Levitte] - - *) BN_zero() only needs to set 'top' and 'neg' to zero for correct results, - and this should never fail. So the return value from the use of - BN_set_word() (which can fail due to needless expansion) is now deprecated; - if OPENSSL_NO_DEPRECATED is defined, BN_zero() is a void macro. - [Geoff Thorpe] - - *) BN_CTX_get() should return zero-valued bignums, providing the same - initialised value as BN_new(). - [Geoff Thorpe, suggested by Ulf Möller] - - *) Support for inhibitAnyPolicy certificate extension. - [Steve Henson] - - *) An audit of the BIGNUM code is underway, for which debugging code is - enabled when BN_DEBUG is defined. This makes stricter enforcements on what - is considered valid when processing BIGNUMs, and causes execution to - assert() when a problem is discovered. If BN_DEBUG_RAND is defined, - further steps are taken to deliberately pollute unused data in BIGNUM - structures to try and expose faulty code further on. For now, openssl will - (in its default mode of operation) continue to tolerate the inconsistent - forms that it has tolerated in the past, but authors and packagers should - consider trying openssl and their own applications when compiled with - these debugging symbols defined. It will help highlight potential bugs in - their own code, and will improve the test coverage for OpenSSL itself. At - some point, these tighter rules will become openssl's default to improve - maintainability, though the assert()s and other overheads will remain only - in debugging configurations. See bn.h for more details. - [Geoff Thorpe, Nils Larsch, Ulf Möller] - - *) BN_CTX_init() has been deprecated, as BN_CTX is an opaque structure - that can only be obtained through BN_CTX_new() (which implicitly - initialises it). The presence of this function only made it possible - to overwrite an existing structure (and cause memory leaks). - [Geoff Thorpe] - - *) Because of the callback-based approach for implementing LHASH as a - template type, lh_insert() adds opaque objects to hash-tables and - lh_doall() or lh_doall_arg() are typically used with a destructor callback - to clean up those corresponding objects before destroying the hash table - (and losing the object pointers). So some over-zealous constifications in - LHASH have been relaxed so that lh_insert() does not take (nor store) the - objects as "const" and the lh_doall[_arg] callback wrappers are not - prototyped to have "const" restrictions on the object pointers they are - given (and so aren't required to cast them away any more). - [Geoff Thorpe] - - *) The tmdiff.h API was so ugly and minimal that our own timing utility - (speed) prefers to use its own implementation. The two implementations - haven't been consolidated as yet (volunteers?) but the tmdiff API has had - its object type properly exposed (MS_TM) instead of casting to/from "char - *". This may still change yet if someone realises MS_TM and "ms_time_***" - aren't necessarily the greatest nomenclatures - but this is what was used - internally to the implementation so I've used that for now. - [Geoff Thorpe] - - *) Ensure that deprecated functions do not get compiled when - OPENSSL_NO_DEPRECATED is defined. Some "openssl" subcommands and a few of - the self-tests were still using deprecated key-generation functions so - these have been updated also. - [Geoff Thorpe] - - *) Reorganise PKCS#7 code to separate the digest location functionality - into PKCS7_find_digest(), digest addition into PKCS7_bio_add_digest(). - New function PKCS7_set_digest() to set the digest type for PKCS#7 - digestedData type. Add additional code to correctly generate the - digestedData type and add support for this type in PKCS7 initialization - functions. - [Steve Henson] - - *) New function PKCS7_set0_type_other() this initializes a PKCS7 - structure of type "other". - [Steve Henson] - - *) Fix prime generation loop in crypto/bn/bn_prime.pl by making - sure the loop does correctly stop and breaking ("division by zero") - modulus operations are not performed. The (pre-generated) prime - table crypto/bn/bn_prime.h was already correct, but it could not be - re-generated on some platforms because of the "division by zero" - situation in the script. - [Ralf S. Engelschall] - - *) Update support for ECC-based TLS ciphersuites according to - draft-ietf-tls-ecc-03.txt: the KDF1 key derivation function with - SHA-1 now is only used for "small" curves (where the - representation of a field element takes up to 24 bytes); for - larger curves, the field element resulting from ECDH is directly - used as premaster secret. - [Douglas Stebila (Sun Microsystems Laboratories)] - - *) Add code for kP+lQ timings to crypto/ec/ectest.c, and add SEC2 - curve secp160r1 to the tests. - [Douglas Stebila (Sun Microsystems Laboratories)] - - *) Add the possibility to load symbols globally with DSO. - [Götz Babin-Ebell <babin-ebell@trustcenter.de> via Richard Levitte] - - *) Add the functions ERR_set_mark() and ERR_pop_to_mark() for better - control of the error stack. - [Richard Levitte] - - *) Add support for STORE in ENGINE. - [Richard Levitte] - - *) Add the STORE type. The intention is to provide a common interface - to certificate and key stores, be they simple file-based stores, or - HSM-type store, or LDAP stores, or... - NOTE: The code is currently UNTESTED and isn't really used anywhere. - [Richard Levitte] - - *) Add a generic structure called OPENSSL_ITEM. This can be used to - pass a list of arguments to any function as well as provide a way - for a function to pass data back to the caller. - [Richard Levitte] - - *) Add the functions BUF_strndup() and BUF_memdup(). BUF_strndup() - works like BUF_strdup() but can be used to duplicate a portion of - a string. The copy gets NUL-terminated. BUF_memdup() duplicates - a memory area. - [Richard Levitte] - - *) Add the function sk_find_ex() which works like sk_find(), but will - return an index to an element even if an exact match couldn't be - found. The index is guaranteed to point at the element where the - searched-for key would be inserted to preserve sorting order. - [Richard Levitte] - - *) Add the function OBJ_bsearch_ex() which works like OBJ_bsearch() but - takes an extra flags argument for optional functionality. Currently, - the following flags are defined: - - OBJ_BSEARCH_VALUE_ON_NOMATCH - This one gets OBJ_bsearch_ex() to return a pointer to the first - element where the comparing function returns a negative or zero - number. - - OBJ_BSEARCH_FIRST_VALUE_ON_MATCH - This one gets OBJ_bsearch_ex() to return a pointer to the first - element where the comparing function returns zero. This is useful - if there are more than one element where the comparing function - returns zero. - [Richard Levitte] - - *) Make it possible to create self-signed certificates with 'openssl ca' - in such a way that the self-signed certificate becomes part of the - CA database and uses the same mechanisms for serial number generation - as all other certificate signing. The new flag '-selfsign' enables - this functionality. Adapt CA.sh and CA.pl.in. - [Richard Levitte] - - *) Add functionality to check the public key of a certificate request - against a given private. This is useful to check that a certificate - request can be signed by that key (self-signing). - [Richard Levitte] - - *) Make it possible to have multiple active certificates with the same - subject in the CA index file. This is done only if the keyword - 'unique_subject' is set to 'no' in the main CA section (default - if 'CA_default') of the configuration file. The value is saved - with the database itself in a separate index attribute file, - named like the index file with '.attr' appended to the name. - [Richard Levitte] - - *) Generate multi-valued AVAs using '+' notation in config files for - req and dirName. - [Steve Henson] - - *) Support for nameConstraints certificate extension. - [Steve Henson] - - *) Support for policyConstraints certificate extension. - [Steve Henson] - - *) Support for policyMappings certificate extension. - [Steve Henson] - - *) Make sure the default DSA_METHOD implementation only uses its - dsa_mod_exp() and/or bn_mod_exp() handlers if they are non-NULL, - and change its own handlers to be NULL so as to remove unnecessary - indirection. This lets alternative implementations fallback to the - default implementation more easily. - [Geoff Thorpe] - - *) Support for directoryName in GeneralName related extensions - in config files. - [Steve Henson] - - *) Make it possible to link applications using Makefile.shared. - Make that possible even when linking against static libraries! - [Richard Levitte] - - *) Support for single pass processing for S/MIME signing. This now - means that S/MIME signing can be done from a pipe, in addition - cleartext signing (multipart/signed type) is effectively streaming - and the signed data does not need to be all held in memory. - - This is done with a new flag PKCS7_STREAM. When this flag is set - PKCS7_sign() only initializes the PKCS7 structure and the actual signing - is done after the data is output (and digests calculated) in - SMIME_write_PKCS7(). - [Steve Henson] - - *) Add full support for -rpath/-R, both in shared libraries and - applications, at least on the platforms where it's known how - to do it. - [Richard Levitte] - - *) In crypto/ec/ec_mult.c, implement fast point multiplication with - precomputation, based on wNAF splitting: EC_GROUP_precompute_mult() - will now compute a table of multiples of the generator that - makes subsequent invocations of EC_POINTs_mul() or EC_POINT_mul() - faster (notably in the case of a single point multiplication, - scalar * generator). - [Nils Larsch, Bodo Moeller] - - *) IPv6 support for certificate extensions. The various extensions - which use the IP:a.b.c.d can now take IPv6 addresses using the - formats of RFC1884 2.2 . IPv6 addresses are now also displayed - correctly. - [Steve Henson] - - *) Added an ENGINE that implements RSA by performing private key - exponentiations with the GMP library. The conversions to and from - GMP's mpz_t format aren't optimised nor are any montgomery forms - cached, and on x86 it appears OpenSSL's own performance has caught up. - However there are likely to be other architectures where GMP could - provide a boost. This ENGINE is not built in by default, but it can be - specified at Configure time and should be accompanied by the necessary - linker additions, eg; - ./config -DOPENSSL_USE_GMP -lgmp - [Geoff Thorpe] - - *) "openssl engine" will not display ENGINE/DSO load failure errors when - testing availability of engines with "-t" - the old behaviour is - produced by increasing the feature's verbosity with "-tt". - [Geoff Thorpe] - - *) ECDSA routines: under certain error conditions uninitialized BN objects - could be freed. Solution: make sure initialization is performed early - enough. (Reported and fix supplied by Nils Larsch <nla@trustcenter.de> - via PR#459) - [Lutz Jaenicke] - - *) Key-generation can now be implemented in RSA_METHOD, DSA_METHOD - and DH_METHOD (eg. by ENGINE implementations) to override the normal - software implementations. For DSA and DH, parameter generation can - also be overridden by providing the appropriate method callbacks. - [Geoff Thorpe] - - *) Change the "progress" mechanism used in key-generation and - primality testing to functions that take a new BN_GENCB pointer in - place of callback/argument pairs. The new API functions have "_ex" - postfixes and the older functions are reimplemented as wrappers for - the new ones. The OPENSSL_NO_DEPRECATED symbol can be used to hide - declarations of the old functions to help (graceful) attempts to - migrate to the new functions. Also, the new key-generation API - functions operate on a caller-supplied key-structure and return - success/failure rather than returning a key or NULL - this is to - help make "keygen" another member function of RSA_METHOD etc. - - Example for using the new callback interface: - - int (*my_callback)(int a, int b, BN_GENCB *cb) = ...; - void *my_arg = ...; - BN_GENCB my_cb; - - BN_GENCB_set(&my_cb, my_callback, my_arg); - - return BN_is_prime_ex(some_bignum, BN_prime_checks, NULL, &cb); - /* For the meaning of a, b in calls to my_callback(), see the - * documentation of the function that calls the callback. - * cb will point to my_cb; my_arg can be retrieved as cb->arg. - * my_callback should return 1 if it wants BN_is_prime_ex() - * to continue, or 0 to stop. - */ - - [Geoff Thorpe] - - *) Change the ZLIB compression method to be stateful, and make it - available to TLS with the number defined in - draft-ietf-tls-compression-04.txt. - [Richard Levitte] - - *) Add the ASN.1 structures and functions for CertificatePair, which - is defined as follows (according to X.509_4thEditionDraftV6.pdf): - - CertificatePair ::= SEQUENCE { - forward [0] Certificate OPTIONAL, - reverse [1] Certificate OPTIONAL, - -- at least one of the pair shall be present -- } - - Also implement the PEM functions to read and write certificate - pairs, and defined the PEM tag as "CERTIFICATE PAIR". - - This needed to be defined, mostly for the sake of the LDAP - attribute crossCertificatePair, but may prove useful elsewhere as - well. - [Richard Levitte] - - *) Make it possible to inhibit symlinking of shared libraries in - Makefile.shared, for Cygwin's sake. - [Richard Levitte] - - *) Extend the BIGNUM API by creating a function - void BN_set_negative(BIGNUM *a, int neg); - and a macro that behave like - int BN_is_negative(const BIGNUM *a); - - to avoid the need to access 'a->neg' directly in applications. - [Nils Larsch] - - *) Implement fast modular reduction for pseudo-Mersenne primes - used in NIST curves (crypto/bn/bn_nist.c, crypto/ec/ecp_nist.c). - EC_GROUP_new_curve_GFp() will now automatically use this - if applicable. - [Nils Larsch <nla@trustcenter.de>] - - *) Add new lock type (CRYPTO_LOCK_BN). - [Bodo Moeller] - - *) Change the ENGINE framework to automatically load engines - dynamically from specific directories unless they could be - found to already be built in or loaded. Move all the - current engines except for the cryptodev one to a new - directory engines/. - The engines in engines/ are built as shared libraries if - the "shared" options was given to ./Configure or ./config. - Otherwise, they are inserted in libcrypto.a. - /usr/local/ssl/engines is the default directory for dynamic - engines, but that can be overridden at configure time through - the usual use of --prefix and/or --openssldir, and at run - time with the environment variable OPENSSL_ENGINES. - [Geoff Thorpe and Richard Levitte] - - *) Add Makefile.shared, a helper makefile to build shared - libraries. Adapt Makefile.org. - [Richard Levitte] - - *) Add version info to Win32 DLLs. - [Peter 'Luna' Runestig" <peter@runestig.com>] - - *) Add new 'medium level' PKCS#12 API. Certificates and keys - can be added using this API to created arbitrary PKCS#12 - files while avoiding the low level API. - - New options to PKCS12_create(), key or cert can be NULL and - will then be omitted from the output file. The encryption - algorithm NIDs can be set to -1 for no encryption, the mac - iteration count can be set to 0 to omit the mac. - - Enhance pkcs12 utility by making the -nokeys and -nocerts - options work when creating a PKCS#12 file. New option -nomac - to omit the mac, NONE can be set for an encryption algorithm. - New code is modified to use the enhanced PKCS12_create() - instead of the low level API. - [Steve Henson] - - *) Extend ASN1 encoder to support indefinite length constructed - encoding. This can output sequences tags and octet strings in - this form. Modify pk7_asn1.c to support indefinite length - encoding. This is experimental and needs additional code to - be useful, such as an ASN1 bio and some enhanced streaming - PKCS#7 code. - - Extend template encode functionality so that tagging is passed - down to the template encoder. - [Steve Henson] - - *) Let 'openssl req' fail if an argument to '-newkey' is not - recognized instead of using RSA as a default. - [Bodo Moeller] - - *) Add support for ECC-based ciphersuites from draft-ietf-tls-ecc-01.txt. - As these are not official, they are not included in "ALL"; - the "ECCdraft" ciphersuite group alias can be used to select them. - [Vipul Gupta and Sumit Gupta (Sun Microsystems Laboratories)] - - *) Add ECDH engine support. - [Nils Gura and Douglas Stebila (Sun Microsystems Laboratories)] - - *) Add ECDH in new directory crypto/ecdh/. - [Douglas Stebila (Sun Microsystems Laboratories)] - - *) Let BN_rand_range() abort with an error after 100 iterations - without success (which indicates a broken PRNG). - [Bodo Moeller] - - *) Change BN_mod_sqrt() so that it verifies that the input value - is really the square of the return value. (Previously, - BN_mod_sqrt would show GIGO behaviour.) - [Bodo Moeller] - - *) Add named elliptic curves over binary fields from X9.62, SECG, - and WAP/WTLS; add OIDs that were still missing. - - [Sheueling Chang Shantz and Douglas Stebila - (Sun Microsystems Laboratories)] - - *) Extend the EC library for elliptic curves over binary fields - (new files ec2_smpl.c, ec2_smpt.c, ec2_mult.c in crypto/ec/). - New EC_METHOD: - - EC_GF2m_simple_method - - New API functions: - - EC_GROUP_new_curve_GF2m - EC_GROUP_set_curve_GF2m - EC_GROUP_get_curve_GF2m - EC_POINT_set_affine_coordinates_GF2m - EC_POINT_get_affine_coordinates_GF2m - EC_POINT_set_compressed_coordinates_GF2m - - Point compression for binary fields is disabled by default for - patent reasons (compile with OPENSSL_EC_BIN_PT_COMP defined to - enable it). - - As binary polynomials are represented as BIGNUMs, various members - of the EC_GROUP and EC_POINT data structures can be shared - between the implementations for prime fields and binary fields; - the above ..._GF2m functions (except for EX_GROUP_new_curve_GF2m) - are essentially identical to their ..._GFp counterparts. - (For simplicity, the '..._GFp' prefix has been dropped from - various internal method names.) - - An internal 'field_div' method (similar to 'field_mul' and - 'field_sqr') has been added; this is used only for binary fields. - - [Sheueling Chang Shantz and Douglas Stebila - (Sun Microsystems Laboratories)] - - *) Optionally dispatch EC_POINT_mul(), EC_POINT_precompute_mult() - through methods ('mul', 'precompute_mult'). - - The generic implementations (now internally called 'ec_wNAF_mul' - and 'ec_wNAF_precomputed_mult') remain the default if these - methods are undefined. - - [Sheueling Chang Shantz and Douglas Stebila - (Sun Microsystems Laboratories)] - - *) New function EC_GROUP_get_degree, which is defined through - EC_METHOD. For curves over prime fields, this returns the bit - length of the modulus. - - [Sheueling Chang Shantz and Douglas Stebila - (Sun Microsystems Laboratories)] - - *) New functions EC_GROUP_dup, EC_POINT_dup. - (These simply call ..._new and ..._copy). - - [Sheueling Chang Shantz and Douglas Stebila - (Sun Microsystems Laboratories)] - - *) Add binary polynomial arithmetic software in crypto/bn/bn_gf2m.c. - Polynomials are represented as BIGNUMs (where the sign bit is not - used) in the following functions [macros]: - - BN_GF2m_add - BN_GF2m_sub [= BN_GF2m_add] - BN_GF2m_mod [wrapper for BN_GF2m_mod_arr] - BN_GF2m_mod_mul [wrapper for BN_GF2m_mod_mul_arr] - BN_GF2m_mod_sqr [wrapper for BN_GF2m_mod_sqr_arr] - BN_GF2m_mod_inv - BN_GF2m_mod_exp [wrapper for BN_GF2m_mod_exp_arr] - BN_GF2m_mod_sqrt [wrapper for BN_GF2m_mod_sqrt_arr] - BN_GF2m_mod_solve_quad [wrapper for BN_GF2m_mod_solve_quad_arr] - BN_GF2m_cmp [= BN_ucmp] - - (Note that only the 'mod' functions are actually for fields GF(2^m). - BN_GF2m_add() is misnomer, but this is for the sake of consistency.) - - For some functions, an the irreducible polynomial defining a - field can be given as an 'unsigned int[]' with strictly - decreasing elements giving the indices of those bits that are set; - i.e., p[] represents the polynomial - f(t) = t^p[0] + t^p[1] + ... + t^p[k] - where - p[0] > p[1] > ... > p[k] = 0. - This applies to the following functions: - - BN_GF2m_mod_arr - BN_GF2m_mod_mul_arr - BN_GF2m_mod_sqr_arr - BN_GF2m_mod_inv_arr [wrapper for BN_GF2m_mod_inv] - BN_GF2m_mod_div_arr [wrapper for BN_GF2m_mod_div] - BN_GF2m_mod_exp_arr - BN_GF2m_mod_sqrt_arr - BN_GF2m_mod_solve_quad_arr - BN_GF2m_poly2arr - BN_GF2m_arr2poly - - Conversion can be performed by the following functions: - - BN_GF2m_poly2arr - BN_GF2m_arr2poly - - bntest.c has additional tests for binary polynomial arithmetic. - - Two implementations for BN_GF2m_mod_div() are available. - The default algorithm simply uses BN_GF2m_mod_inv() and - BN_GF2m_mod_mul(). The alternative algorithm is compiled in only - if OPENSSL_SUN_GF2M_DIV is defined (patent pending; read the - copyright notice in crypto/bn/bn_gf2m.c before enabling it). - - [Sheueling Chang Shantz and Douglas Stebila - (Sun Microsystems Laboratories)] - - *) Add new error code 'ERR_R_DISABLED' that can be used when some - functionality is disabled at compile-time. - [Douglas Stebila <douglas.stebila@sun.com>] - - *) Change default behaviour of 'openssl asn1parse' so that more - information is visible when viewing, e.g., a certificate: - - Modify asn1_parse2 (crypto/asn1/asn1_par.c) so that in non-'dump' - mode the content of non-printable OCTET STRINGs is output in a - style similar to INTEGERs, but with '[HEX DUMP]' prepended to - avoid the appearance of a printable string. - [Nils Larsch <nla@trustcenter.de>] - - *) Add 'asn1_flag' and 'asn1_form' member to EC_GROUP with access - functions - EC_GROUP_set_asn1_flag() - EC_GROUP_get_asn1_flag() - EC_GROUP_set_point_conversion_form() - EC_GROUP_get_point_conversion_form() - These control ASN1 encoding details: - - Curves (i.e., groups) are encoded explicitly unless asn1_flag - has been set to OPENSSL_EC_NAMED_CURVE. - - Points are encoded in uncompressed form by default; options for - asn1_for are as for point2oct, namely - POINT_CONVERSION_COMPRESSED - POINT_CONVERSION_UNCOMPRESSED - POINT_CONVERSION_HYBRID - - Also add 'seed' and 'seed_len' members to EC_GROUP with access - functions - EC_GROUP_set_seed() - EC_GROUP_get0_seed() - EC_GROUP_get_seed_len() - This is used only for ASN1 purposes (so far). - [Nils Larsch <nla@trustcenter.de>] - - *) Add 'field_type' member to EC_METHOD, which holds the NID - of the appropriate field type OID. The new function - EC_METHOD_get_field_type() returns this value. - [Nils Larsch <nla@trustcenter.de>] - - *) Add functions - EC_POINT_point2bn() - EC_POINT_bn2point() - EC_POINT_point2hex() - EC_POINT_hex2point() - providing useful interfaces to EC_POINT_point2oct() and - EC_POINT_oct2point(). - [Nils Larsch <nla@trustcenter.de>] - - *) Change internals of the EC library so that the functions - EC_GROUP_set_generator() - EC_GROUP_get_generator() - EC_GROUP_get_order() - EC_GROUP_get_cofactor() - are implemented directly in crypto/ec/ec_lib.c and not dispatched - to methods, which would lead to unnecessary code duplication when - adding different types of curves. - [Nils Larsch <nla@trustcenter.de> with input by Bodo Moeller] - - *) Implement compute_wNAF (crypto/ec/ec_mult.c) without BIGNUM - arithmetic, and such that modified wNAFs are generated - (which avoid length expansion in many cases). - [Bodo Moeller] - - *) Add a function EC_GROUP_check_discriminant() (defined via - EC_METHOD) that verifies that the curve discriminant is non-zero. - - Add a function EC_GROUP_check() that makes some sanity tests - on a EC_GROUP, its generator and order. This includes - EC_GROUP_check_discriminant(). - [Nils Larsch <nla@trustcenter.de>] - - *) Add ECDSA in new directory crypto/ecdsa/. - - Add applications 'openssl ecparam' and 'openssl ecdsa' - (these are based on 'openssl dsaparam' and 'openssl dsa'). - - ECDSA support is also included in various other files across the - library. Most notably, - - 'openssl req' now has a '-newkey ecdsa:file' option; - - EVP_PKCS82PKEY (crypto/evp/evp_pkey.c) now can handle ECDSA; - - X509_PUBKEY_get (crypto/asn1/x_pubkey.c) and - d2i_PublicKey (crypto/asn1/d2i_pu.c) have been modified to make - them suitable for ECDSA where domain parameters must be - extracted before the specific public key; - - ECDSA engine support has been added. - [Nils Larsch <nla@trustcenter.de>] - - *) Include some named elliptic curves, and add OIDs from X9.62, - SECG, and WAP/WTLS. Each curve can be obtained from the new - function - EC_GROUP_new_by_curve_name(), - and the list of available named curves can be obtained with - EC_get_builtin_curves(). - Also add a 'curve_name' member to EC_GROUP objects, which can be - accessed via - EC_GROUP_set_curve_name() - EC_GROUP_get_curve_name() - [Nils Larsch <larsch@trustcenter.de, Bodo Moeller] - - *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there - was actually never needed) and in BN_mul(). The removal in BN_mul() - required a small change in bn_mul_part_recursive() and the addition - of the functions bn_cmp_part_words(), bn_sub_part_words() and - bn_add_part_words(), which do the same thing as bn_cmp_words(), - bn_sub_words() and bn_add_words() except they take arrays with - differing sizes. - [Richard Levitte] - - Changes between 0.9.7l and 0.9.7m [23 Feb 2007] - - *) Cleanse PEM buffers before freeing them since they may contain - sensitive data. - [Benjamin Bennett <ben@psc.edu>] - - *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that - a ciphersuite string such as "DEFAULT:RSA" cannot enable - authentication-only ciphersuites. - [Bodo Moeller] - - *) Since AES128 and AES256 share a single mask bit in the logic of - ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a - kludge to work properly if AES128 is available and AES256 isn't. - [Victor Duchovni] - - *) Expand security boundary to match 1.1.1 module. - [Steve Henson] - - *) Remove redundant features: hash file source, editing of test vectors - modify fipsld to use external fips_premain.c signature. - [Steve Henson] - - *) New perl script mkfipsscr.pl to create shell scripts or batch files to - run algorithm test programs. - [Steve Henson] - - *) Make algorithm test programs more tolerant of whitespace. - [Steve Henson] - - *) Have SSL/TLS server implementation tolerate "mismatched" record - protocol version while receiving ClientHello even if the - ClientHello is fragmented. (The server can't insist on the - particular protocol version it has chosen before the ServerHello - message has informed the client about his choice.) - [Bodo Moeller] - - *) Load error codes if they are not already present instead of using a - static variable. This allows them to be cleanly unloaded and reloaded. - [Steve Henson] - - Changes between 0.9.7k and 0.9.7l [28 Sep 2006] - - *) Introduce limits to prevent malicious keys being able to - cause a denial of service. (CVE-2006-2940) - [Steve Henson, Bodo Moeller] - - *) Fix ASN.1 parsing of certain invalid structures that can result - in a denial of service. (CVE-2006-2937) [Steve Henson] - - *) Fix buffer overflow in SSL_get_shared_ciphers() function. - (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team] - - *) Fix SSL client code which could crash if connecting to a - malicious SSLv2 server. (CVE-2006-4343) - [Tavis Ormandy and Will Drewry, Google Security Team] - - *) Change ciphersuite string processing so that an explicit - ciphersuite selects this one ciphersuite (so that "AES256-SHA" - will no longer include "AES128-SHA"), and any other similar - ciphersuite (same bitmap) from *other* protocol versions (so that - "RC4-MD5" will still include both the SSL 2.0 ciphersuite and the - SSL 3.0/TLS 1.0 ciphersuite). This is a backport combining - changes from 0.9.8b and 0.9.8d. - [Bodo Moeller] - - Changes between 0.9.7j and 0.9.7k [05 Sep 2006] - - *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher - (CVE-2006-4339) [Ben Laurie and Google Security Team] - - *) Change the Unix randomness entropy gathering to use poll() when - possible instead of select(), since the latter has some - undesirable limitations. - [Darryl Miles via Richard Levitte and Bodo Moeller] - - *) Disable rogue ciphersuites: - - - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5") - - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5") - - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5") - - The latter two were purportedly from - draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really - appear there. - - Also deactivate the remaining ciphersuites from - draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as - unofficial, and the ID has long expired. - [Bodo Moeller] - - *) Fix RSA blinding Heisenbug (problems sometimes occurred on - dual-core machines) and other potential thread-safety issues. - [Bodo Moeller] - - Changes between 0.9.7i and 0.9.7j [04 May 2006] - - *) Adapt fipsld and the build system to link against the validated FIPS - module in FIPS mode. - [Steve Henson] - - *) Fixes for VC++ 2005 build under Windows. - [Steve Henson] - - *) Add new Windows build target VC-32-GMAKE for VC++. This uses GNU make - from a Windows bash shell such as MSYS. It is autodetected from the - "config" script when run from a VC++ environment. Modify standard VC++ - build to use fipscanister.o from the GNU make build. - [Steve Henson] - - Changes between 0.9.7h and 0.9.7i [14 Oct 2005] - - *) Wrapped the definition of EVP_MAX_MD_SIZE in a #ifdef OPENSSL_FIPS. - The value now differs depending on if you build for FIPS or not. - BEWARE! A program linked with a shared FIPSed libcrypto can't be - safely run with a non-FIPSed libcrypto, as it may crash because of - the difference induced by this change. - [Andy Polyakov] - - Changes between 0.9.7g and 0.9.7h [11 Oct 2005] - - *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING - (part of SSL_OP_ALL). This option used to disable the - countermeasure against man-in-the-middle protocol-version - rollback in the SSL 2.0 server implementation, which is a bad - idea. (CVE-2005-2969) - - [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center - for Information Security, National Institute of Advanced Industrial - Science and Technology [AIST], Japan)] - - *) Minimal support for X9.31 signatures and PSS padding modes. This is - mainly for FIPS compliance and not fully integrated at this stage. - [Steve Henson] - - *) For DSA signing, unless DSA_FLAG_NO_EXP_CONSTTIME is set, perform - the exponentiation using a fixed-length exponent. (Otherwise, - the information leaked through timing could expose the secret key - after many signatures; cf. Bleichenbacher's attack on DSA with - biased k.) - [Bodo Moeller] - - *) Make a new fixed-window mod_exp implementation the default for - RSA, DSA, and DH private-key operations so that the sequence of - squares and multiplies and the memory access pattern are - independent of the particular secret key. This will mitigate - cache-timing and potential related attacks. - - BN_mod_exp_mont_consttime() is the new exponentiation implementation, - and this is automatically used by BN_mod_exp_mont() if the new flag - BN_FLG_EXP_CONSTTIME is set for the exponent. RSA, DSA, and DH - will use this BN flag for private exponents unless the flag - RSA_FLAG_NO_EXP_CONSTTIME, DSA_FLAG_NO_EXP_CONSTTIME, or - DH_FLAG_NO_EXP_CONSTTIME, respectively, is set. - - [Matthew D Wood (Intel Corp), with some changes by Bodo Moeller] - - *) Change the client implementation for SSLv23_method() and - SSLv23_client_method() so that is uses the SSL 3.0/TLS 1.0 - Client Hello message format if the SSL_OP_NO_SSLv2 option is set. - (Previously, the SSL 2.0 backwards compatible Client Hello - message format would be used even with SSL_OP_NO_SSLv2.) - [Bodo Moeller] - - *) Add support for smime-type MIME parameter in S/MIME messages which some - clients need. - [Steve Henson] - - *) New function BN_MONT_CTX_set_locked() to set montgomery parameters in - a threadsafe manner. Modify rsa code to use new function and add calls - to dsa and dh code (which had race conditions before). - [Steve Henson] - - *) Include the fixed error library code in the C error file definitions - instead of fixing them up at runtime. This keeps the error code - structures constant. - [Steve Henson] - - Changes between 0.9.7f and 0.9.7g [11 Apr 2005] - - [NB: OpenSSL 0.9.7h and later 0.9.7 patch levels were released after - OpenSSL 0.9.8.] - - *) Fixes for newer kerberos headers. NB: the casts are needed because - the 'length' field is signed on one version and unsigned on another - with no (?) obvious way to tell the difference, without these VC++ - complains. Also the "definition" of FAR (blank) is no longer included - nor is the error ENOMEM. KRB5_PRIVATE has to be set to 1 to pick up - some needed definitions. - [Steve Henson] - - *) Undo Cygwin change. - [Ulf Möller] - - *) Added support for proxy certificates according to RFC 3820. - Because they may be a security thread to unaware applications, - they must be explicitly allowed in run-time. See - docs/HOWTO/proxy_certificates.txt for further information. - [Richard Levitte] - - Changes between 0.9.7e and 0.9.7f [22 Mar 2005] - - *) Use (SSL_RANDOM_VALUE - 4) bytes of pseudo random data when generating - server and client random values. Previously - (SSL_RANDOM_VALUE - sizeof(time_t)) would be used which would result in - less random data when sizeof(time_t) > 4 (some 64 bit platforms). - - This change has negligible security impact because: - - 1. Server and client random values still have 24 bytes of pseudo random - data. - - 2. Server and client random values are sent in the clear in the initial - handshake. - - 3. The master secret is derived using the premaster secret (48 bytes in - size for static RSA ciphersuites) as well as client server and random - values. - - The OpenSSL team would like to thank the UK NISCC for bringing this issue - to our attention. - - [Stephen Henson, reported by UK NISCC] - - *) Use Windows randomness collection on Cygwin. - [Ulf Möller] - - *) Fix hang in EGD/PRNGD query when communication socket is closed - prematurely by EGD/PRNGD. - [Darren Tucker <dtucker@zip.com.au> via Lutz Jänicke, resolves #1014] - - *) Prompt for pass phrases when appropriate for PKCS12 input format. - [Steve Henson] - - *) Back-port of selected performance improvements from development - branch, as well as improved support for PowerPC platforms. - [Andy Polyakov] - - *) Add lots of checks for memory allocation failure, error codes to indicate - failure and freeing up memory if a failure occurs. - [Nauticus Networks SSL Team <openssl@nauticusnet.com>, Steve Henson] - - *) Add new -passin argument to dgst. - [Steve Henson] - - *) Perform some character comparisons of different types in X509_NAME_cmp: - this is needed for some certificates that re-encode DNs into UTF8Strings - (in violation of RFC3280) and can't or won't issue name rollover - certificates. - [Steve Henson] - - *) Make an explicit check during certificate validation to see that - the CA setting in each certificate on the chain is correct. As a - side effect always do the following basic checks on extensions, - not just when there's an associated purpose to the check: - - - if there is an unhandled critical extension (unless the user - has chosen to ignore this fault) - - if the path length has been exceeded (if one is set at all) - - that certain extensions fit the associated purpose (if one has - been given) - [Richard Levitte] - - Changes between 0.9.7d and 0.9.7e [25 Oct 2004] - - *) Avoid a race condition when CRLs are checked in a multi threaded - environment. This would happen due to the reordering of the revoked - entries during signature checking and serial number lookup. Now the - encoding is cached and the serial number sort performed under a lock. - Add new STACK function sk_is_sorted(). - [Steve Henson] - - *) Add Delta CRL to the extension code. - [Steve Henson] - - *) Various fixes to s3_pkt.c so alerts are sent properly. - [David Holmes <d.holmes@f5.com>] - - *) Reduce the chances of duplicate issuer name and serial numbers (in - violation of RFC3280) using the OpenSSL certificate creation utilities. - This is done by creating a random 64 bit value for the initial serial - number when a serial number file is created or when a self signed - certificate is created using 'openssl req -x509'. The initial serial - number file is created using 'openssl x509 -next_serial' in CA.pl - rather than being initialized to 1. - [Steve Henson] - - Changes between 0.9.7c and 0.9.7d [17 Mar 2004] - - *) Fix null-pointer assignment in do_change_cipher_spec() revealed - by using the Codenomicon TLS Test Tool (CVE-2004-0079) - [Joe Orton, Steve Henson] - - *) Fix flaw in SSL/TLS handshaking when using Kerberos ciphersuites - (CVE-2004-0112) - [Joe Orton, Steve Henson] - - *) Make it possible to have multiple active certificates with the same - subject in the CA index file. This is done only if the keyword - 'unique_subject' is set to 'no' in the main CA section (default - if 'CA_default') of the configuration file. The value is saved - with the database itself in a separate index attribute file, - named like the index file with '.attr' appended to the name. - [Richard Levitte] - - *) X509 verify fixes. Disable broken certificate workarounds when - X509_V_FLAGS_X509_STRICT is set. Check CRL issuer has cRLSign set if - keyUsage extension present. Don't accept CRLs with unhandled critical - extensions: since verify currently doesn't process CRL extensions this - rejects a CRL with *any* critical extensions. Add new verify error codes - for these cases. - [Steve Henson] - - *) When creating an OCSP nonce use an OCTET STRING inside the extnValue. - A clarification of RFC2560 will require the use of OCTET STRINGs and - some implementations cannot handle the current raw format. Since OpenSSL - copies and compares OCSP nonces as opaque blobs without any attempt at - parsing them this should not create any compatibility issues. - [Steve Henson] - - *) New md flag EVP_MD_CTX_FLAG_REUSE this allows md_data to be reused when - calling EVP_MD_CTX_copy_ex() to avoid calling OPENSSL_malloc(). Without - this HMAC (and other) operations are several times slower than OpenSSL - < 0.9.7. - [Steve Henson] - - *) Print out GeneralizedTime and UTCTime in ASN1_STRING_print_ex(). - [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>] - - *) Use the correct content when signing type "other". - [Steve Henson] - - Changes between 0.9.7b and 0.9.7c [30 Sep 2003] - - *) Fix various bugs revealed by running the NISCC test suite: - - Stop out of bounds reads in the ASN1 code when presented with - invalid tags (CVE-2003-0543 and CVE-2003-0544). - - Free up ASN1_TYPE correctly if ANY type is invalid (CVE-2003-0545). - - If verify callback ignores invalid public key errors don't try to check - certificate signature with the NULL public key. - - [Steve Henson] - - *) New -ignore_err option in ocsp application to stop the server - exiting on the first error in a request. - [Steve Henson] - - *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate - if the server requested one: as stated in TLS 1.0 and SSL 3.0 - specifications. - [Steve Henson] - - *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional - extra data after the compression methods not only for TLS 1.0 - but also for SSL 3.0 (as required by the specification). - [Bodo Moeller; problem pointed out by Matthias Loepfe] - - *) Change X509_certificate_type() to mark the key as exported/exportable - when it's 512 *bits* long, not 512 bytes. - [Richard Levitte] - - *) Change AES_cbc_encrypt() so it outputs exact multiple of - blocks during encryption. - [Richard Levitte] - - *) Various fixes to base64 BIO and non blocking I/O. On write - flushes were not handled properly if the BIO retried. On read - data was not being buffered properly and had various logic bugs. - This also affects blocking I/O when the data being decoded is a - certain size. - [Steve Henson] - - *) Various S/MIME bugfixes and compatibility changes: - output correct application/pkcs7 MIME type if - PKCS7_NOOLDMIMETYPE is set. Tolerate some broken signatures. - Output CR+LF for EOL if PKCS7_CRLFEOL is set (this makes opening - of files as .eml work). Correctly handle very long lines in MIME - parser. - [Steve Henson] - - Changes between 0.9.7a and 0.9.7b [10 Apr 2003] - - *) Countermeasure against the Klima-Pokorny-Rosa extension of - Bleichbacher's attack on PKCS #1 v1.5 padding: treat - a protocol version number mismatch like a decryption error - in ssl3_get_client_key_exchange (ssl/s3_srvr.c). - [Bodo Moeller] - - *) Turn on RSA blinding by default in the default implementation - to avoid a timing attack. Applications that don't want it can call - RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING. - They would be ill-advised to do so in most cases. - [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller] - - *) Change RSA blinding code so that it works when the PRNG is not - seeded (in this case, the secret RSA exponent is abused as - an unpredictable seed -- if it is not unpredictable, there - is no point in blinding anyway). Make RSA blinding thread-safe - by remembering the creator's thread ID in rsa->blinding and - having all other threads use local one-time blinding factors - (this requires more computation than sharing rsa->blinding, but - avoids excessive locking; and if an RSA object is not shared - between threads, blinding will still be very fast). - [Bodo Moeller] - - *) Fixed a typo bug that would cause ENGINE_set_default() to set an - ENGINE as defaults for all supported algorithms irrespective of - the 'flags' parameter. 'flags' is now honoured, so applications - should make sure they are passing it correctly. - [Geoff Thorpe] - - *) Target "mingw" now allows native Windows code to be generated in - the Cygwin environment as well as with the MinGW compiler. - [Ulf Moeller] - - Changes between 0.9.7 and 0.9.7a [19 Feb 2003] - - *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked - via timing by performing a MAC computation even if incorrect - block cipher padding has been found. This is a countermeasure - against active attacks where the attacker has to distinguish - between bad padding and a MAC verification error. (CVE-2003-0078) - - [Bodo Moeller; problem pointed out by Brice Canvel (EPFL), - Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and - Martin Vuagnoux (EPFL, Ilion)] - - *) Make the no-err option work as intended. The intention with no-err - is not to have the whole error stack handling routines removed from - libcrypto, it's only intended to remove all the function name and - reason texts, thereby removing some of the footprint that may not - be interesting if those errors aren't displayed anyway. - - NOTE: it's still possible for any application or module to have its - own set of error texts inserted. The routines are there, just not - used by default when no-err is given. - [Richard Levitte] - - *) Add support for FreeBSD on IA64. - [dirk.meyer@dinoex.sub.org via Richard Levitte, resolves #454] - - *) Adjust DES_cbc_cksum() so it returns the same value as the MIT - Kerberos function mit_des_cbc_cksum(). Before this change, - the value returned by DES_cbc_cksum() was like the one from - mit_des_cbc_cksum(), except the bytes were swapped. - [Kevin Greaney <Kevin.Greaney@hp.com> and Richard Levitte] - - *) Allow an application to disable the automatic SSL chain building. - Before this a rather primitive chain build was always performed in - ssl3_output_cert_chain(): an application had no way to send the - correct chain if the automatic operation produced an incorrect result. - - Now the chain builder is disabled if either: - - 1. Extra certificates are added via SSL_CTX_add_extra_chain_cert(). - - 2. The mode flag SSL_MODE_NO_AUTO_CHAIN is set. - - The reasoning behind this is that an application would not want the - auto chain building to take place if extra chain certificates are - present and it might also want a means of sending no additional - certificates (for example the chain has two certificates and the - root is omitted). - [Steve Henson] - - *) Add the possibility to build without the ENGINE framework. - [Steven Reddie <smr@essemer.com.au> via Richard Levitte] - - *) Under Win32 gmtime() can return NULL: check return value in - OPENSSL_gmtime(). Add error code for case where gmtime() fails. - [Steve Henson] - - *) DSA routines: under certain error conditions uninitialized BN objects - could be freed. Solution: make sure initialization is performed early - enough. (Reported and fix supplied by Ivan D Nestlerode <nestler@MIT.EDU>, - Nils Larsch <nla@trustcenter.de> via PR#459) - [Lutz Jaenicke] - - *) Another fix for SSLv2 session ID handling: the session ID was incorrectly - checked on reconnect on the client side, therefore session resumption - could still fail with a "ssl session id is different" error. This - behaviour is masked when SSL_OP_ALL is used due to - SSL_OP_MICROSOFT_SESS_ID_BUG being set. - Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as - followup to PR #377. - [Lutz Jaenicke] - - *) IA-32 assembler support enhancements: unified ELF targets, support - for SCO/Caldera platforms, fix for Cygwin shared build. - [Andy Polyakov] - - *) Add support for FreeBSD on sparc64. As a consequence, support for - FreeBSD on non-x86 processors is separate from x86 processors on - the config script, much like the NetBSD support. - [Richard Levitte & Kris Kennaway <kris@obsecurity.org>] - - Changes between 0.9.6h and 0.9.7 [31 Dec 2002] - - [NB: OpenSSL 0.9.6i and later 0.9.6 patch levels were released after - OpenSSL 0.9.7.] - - *) Fix session ID handling in SSLv2 client code: the SERVER FINISHED - code (06) was taken as the first octet of the session ID and the last - octet was ignored consequently. As a result SSLv2 client side session - caching could not have worked due to the session ID mismatch between - client and server. - Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as - PR #377. - [Lutz Jaenicke] - - *) Change the declaration of needed Kerberos libraries to use EX_LIBS - instead of the special (and badly supported) LIBKRB5. LIBKRB5 is - removed entirely. - [Richard Levitte] - - *) The hw_ncipher.c engine requires dynamic locks. Unfortunately, it - seems that in spite of existing for more than a year, many application - author have done nothing to provide the necessary callbacks, which - means that this particular engine will not work properly anywhere. - This is a very unfortunate situation which forces us, in the name - of usability, to give the hw_ncipher.c a static lock, which is part - of libcrypto. - NOTE: This is for the 0.9.7 series ONLY. This hack will never - appear in 0.9.8 or later. We EXPECT application authors to have - dealt properly with this when 0.9.8 is released (unless we actually - make such changes in the libcrypto locking code that changes will - have to be made anyway). - [Richard Levitte] - - *) In asn1_d2i_read_bio() repeatedly call BIO_read() until all content - octets have been read, EOF or an error occurs. Without this change - some truncated ASN1 structures will not produce an error. - [Steve Henson] - - *) Disable Heimdal support, since it hasn't been fully implemented. - Still give the possibility to force the use of Heimdal, but with - warnings and a request that patches get sent to openssl-dev. - [Richard Levitte] - - *) Add the VC-CE target, introduce the WINCE sysname, and add - INSTALL.WCE and appropriate conditionals to make it build. - [Steven Reddie <smr@essemer.com.au> via Richard Levitte] - - *) Change the DLL names for Cygwin to cygcrypto-x.y.z.dll and - cygssl-x.y.z.dll, where x, y and z are the major, minor and - edit numbers of the version. - [Corinna Vinschen <vinschen@redhat.com> and Richard Levitte] - - *) Introduce safe string copy and catenation functions - (BUF_strlcpy() and BUF_strlcat()). - [Ben Laurie (CHATS) and Richard Levitte] - - *) Avoid using fixed-size buffers for one-line DNs. - [Ben Laurie (CHATS)] - - *) Add BUF_MEM_grow_clean() to avoid information leakage when - resizing buffers containing secrets, and use where appropriate. - [Ben Laurie (CHATS)] - - *) Avoid using fixed size buffers for configuration file location. - [Ben Laurie (CHATS)] - - *) Avoid filename truncation for various CA files. - [Ben Laurie (CHATS)] - - *) Use sizeof in preference to magic numbers. - [Ben Laurie (CHATS)] - - *) Avoid filename truncation in cert requests. - [Ben Laurie (CHATS)] - - *) Add assertions to check for (supposedly impossible) buffer - overflows. - [Ben Laurie (CHATS)] - - *) Don't cache truncated DNS entries in the local cache (this could - potentially lead to a spoofing attack). - [Ben Laurie (CHATS)] - - *) Fix various buffers to be large enough for hex/decimal - representations in a platform independent manner. - [Ben Laurie (CHATS)] - - *) Add CRYPTO_realloc_clean() to avoid information leakage when - resizing buffers containing secrets, and use where appropriate. - [Ben Laurie (CHATS)] - - *) Add BIO_indent() to avoid much slightly worrying code to do - indents. - [Ben Laurie (CHATS)] - - *) Convert sprintf()/BIO_puts() to BIO_printf(). - [Ben Laurie (CHATS)] - - *) buffer_gets() could terminate with the buffer only half - full. Fixed. - [Ben Laurie (CHATS)] - - *) Add assertions to prevent user-supplied crypto functions from - overflowing internal buffers by having large block sizes, etc. - [Ben Laurie (CHATS)] - - *) New OPENSSL_assert() macro (similar to assert(), but enabled - unconditionally). - [Ben Laurie (CHATS)] - - *) Eliminate unused copy of key in RC4. - [Ben Laurie (CHATS)] - - *) Eliminate unused and incorrectly sized buffers for IV in pem.h. - [Ben Laurie (CHATS)] - - *) Fix off-by-one error in EGD path. - [Ben Laurie (CHATS)] - - *) If RANDFILE path is too long, ignore instead of truncating. - [Ben Laurie (CHATS)] - - *) Eliminate unused and incorrectly sized X.509 structure - CBCParameter. - [Ben Laurie (CHATS)] - - *) Eliminate unused and dangerous function knumber(). - [Ben Laurie (CHATS)] - - *) Eliminate unused and dangerous structure, KSSL_ERR. - [Ben Laurie (CHATS)] - - *) Protect against overlong session ID context length in an encoded - session object. Since these are local, this does not appear to be - exploitable. - [Ben Laurie (CHATS)] - - *) Change from security patch (see 0.9.6e below) that did not affect - the 0.9.6 release series: - - Remote buffer overflow in SSL3 protocol - an attacker could - supply an oversized master key in Kerberos-enabled versions. - (CVE-2002-0657) - [Ben Laurie (CHATS)] - - *) Change the SSL kerb5 codes to match RFC 2712. - [Richard Levitte] - - *) Make -nameopt work fully for req and add -reqopt switch. - [Michael Bell <michael.bell@rz.hu-berlin.de>, Steve Henson] - - *) The "block size" for block ciphers in CFB and OFB mode should be 1. - [Steve Henson, reported by Yngve Nysaeter Pettersen <yngve@opera.com>] - - *) Make sure tests can be performed even if the corresponding algorithms - have been removed entirely. This was also the last step to make - OpenSSL compilable with DJGPP under all reasonable conditions. - [Richard Levitte, Doug Kaufman <dkaufman@rahul.net>] - - *) Add cipher selection rules COMPLEMENTOFALL and COMPLEMENTOFDEFAULT - to allow version independent disabling of normally unselected ciphers, - which may be activated as a side-effect of selecting a single cipher. - - (E.g., cipher list string "RSA" enables ciphersuites that are left - out of "ALL" because they do not provide symmetric encryption. - "RSA:!COMPLEMEMENTOFALL" avoids these unsafe ciphersuites.) - [Lutz Jaenicke, Bodo Moeller] - - *) Add appropriate support for separate platform-dependent build - directories. The recommended way to make a platform-dependent - build directory is the following (tested on Linux), maybe with - some local tweaks: - - # Place yourself outside of the OpenSSL source tree. In - # this example, the environment variable OPENSSL_SOURCE - # is assumed to contain the absolute OpenSSL source directory. - mkdir -p objtree/"`uname -s`-`uname -r`-`uname -m`" - cd objtree/"`uname -s`-`uname -r`-`uname -m`" - (cd $OPENSSL_SOURCE; find . -type f) | while read F; do - mkdir -p `dirname $F` - ln -s $OPENSSL_SOURCE/$F $F - done - - To be absolutely sure not to disturb the source tree, a "make clean" - is a good thing. If it isn't successful, don't worry about it, - it probably means the source directory is very clean. - [Richard Levitte] - - *) Make sure any ENGINE control commands make local copies of string - pointers passed to them whenever necessary. Otherwise it is possible - the caller may have overwritten (or deallocated) the original string - data when a later ENGINE operation tries to use the stored values. - [Götz Babin-Ebell <babinebell@trustcenter.de>] - - *) Improve diagnostics in file reading and command-line digests. - [Ben Laurie aided and abetted by Solar Designer <solar@openwall.com>] - - *) Add AES modes CFB and OFB to the object database. Correct an - error in AES-CFB decryption. - [Richard Levitte] - - *) Remove most calls to EVP_CIPHER_CTX_cleanup() in evp_enc.c, this - allows existing EVP_CIPHER_CTX structures to be reused after - calling EVP_*Final(). This behaviour is used by encryption - BIOs and some applications. This has the side effect that - applications must explicitly clean up cipher contexts with - EVP_CIPHER_CTX_cleanup() or they will leak memory. - [Steve Henson] - - *) Check the values of dna and dnb in bn_mul_recursive before calling - bn_mul_comba (a non zero value means the a or b arrays do not contain - n2 elements) and fallback to bn_mul_normal if either is not zero. - [Steve Henson] - - *) Fix escaping of non-ASCII characters when using the -subj option - of the "openssl req" command line tool. (Robert Joop <joop@fokus.gmd.de>) - [Lutz Jaenicke] - - *) Make object definitions compliant to LDAP (RFC2256): SN is the short - form for "surname", serialNumber has no short form. - Use "mail" as the short name for "rfc822Mailbox" according to RFC2798; - therefore remove "mail" short name for "internet 7". - The OID for unique identifiers in X509 certificates is - x500UniqueIdentifier, not uniqueIdentifier. - Some more OID additions. (Michael Bell <michael.bell@rz.hu-berlin.de>) - [Lutz Jaenicke] - - *) Add an "init" command to the ENGINE config module and auto initialize - ENGINEs. Without any "init" command the ENGINE will be initialized - after all ctrl commands have been executed on it. If init=1 the - ENGINE is initialized at that point (ctrls before that point are run - on the uninitialized ENGINE and after on the initialized one). If - init=0 then the ENGINE will not be initialized at all. - [Steve Henson] - - *) Fix the 'app_verify_callback' interface so that the user-defined - argument is actually passed to the callback: In the - SSL_CTX_set_cert_verify_callback() prototype, the callback - declaration has been changed from - int (*cb)() - into - int (*cb)(X509_STORE_CTX *,void *); - in ssl_verify_cert_chain (ssl/ssl_cert.c), the call - i=s->ctx->app_verify_callback(&ctx) - has been changed into - i=s->ctx->app_verify_callback(&ctx, s->ctx->app_verify_arg). - - To update applications using SSL_CTX_set_cert_verify_callback(), - a dummy argument can be added to their callback functions. - [D. K. Smetters <smetters@parc.xerox.com>] - - *) Added the '4758cca' ENGINE to support IBM 4758 cards. - [Maurice Gittens <maurice@gittens.nl>, touchups by Geoff Thorpe] - - *) Add and OPENSSL_LOAD_CONF define which will cause - OpenSSL_add_all_algorithms() to load the openssl.cnf config file. - This allows older applications to transparently support certain - OpenSSL features: such as crypto acceleration and dynamic ENGINE loading. - Two new functions OPENSSL_add_all_algorithms_noconf() which will never - load the config file and OPENSSL_add_all_algorithms_conf() which will - always load it have also been added. - [Steve Henson] - - *) Add the OFB, CFB and CTR (all with 128 bit feedback) to AES. - Adjust NIDs and EVP layer. - [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte] - - *) Config modules support in openssl utility. - - Most commands now load modules from the config file, - though in a few (such as version) this isn't done - because it couldn't be used for anything. - - In the case of ca and req the config file used is - the same as the utility itself: that is the -config - command line option can be used to specify an - alternative file. - [Steve Henson] - - *) Move default behaviour from OPENSSL_config(). If appname is NULL - use "openssl_conf" if filename is NULL use default openssl config file. - [Steve Henson] - - *) Add an argument to OPENSSL_config() to allow the use of an alternative - config section name. Add a new flag to tolerate a missing config file - and move code to CONF_modules_load_file(). - [Steve Henson] - - *) Support for crypto accelerator cards from Accelerated Encryption - Processing, www.aep.ie. (Use engine 'aep') - The support was copied from 0.9.6c [engine] and adapted/corrected - to work with the new engine framework. - [AEP Inc. and Richard Levitte] - - *) Support for SureWare crypto accelerator cards from Baltimore - Technologies. (Use engine 'sureware') - The support was copied from 0.9.6c [engine] and adapted - to work with the new engine framework. - [Richard Levitte] - - *) Have the CHIL engine fork-safe (as defined by nCipher) and actually - make the newer ENGINE framework commands for the CHIL engine work. - [Toomas Kiisk <vix@cyber.ee> and Richard Levitte] - - *) Make it possible to produce shared libraries on ReliantUNIX. - [Robert Dahlem <Robert.Dahlem@ffm2.siemens.de> via Richard Levitte] - - *) Add the configuration target debug-linux-ppro. - Make 'openssl rsa' use the general key loading routines - implemented in apps.c, and make those routines able to - handle the key format FORMAT_NETSCAPE and the variant - FORMAT_IISSGC. - [Toomas Kiisk <vix@cyber.ee> via Richard Levitte] - - *) Fix a crashbug and a logic bug in hwcrhk_load_pubkey(). - [Toomas Kiisk <vix@cyber.ee> via Richard Levitte] - - *) Add -keyform to rsautl, and document -engine. - [Richard Levitte, inspired by Toomas Kiisk <vix@cyber.ee>] - - *) Change BIO_new_file (crypto/bio/bss_file.c) to use new - BIO_R_NO_SUCH_FILE error code rather than the generic - ERR_R_SYS_LIB error code if fopen() fails with ENOENT. - [Ben Laurie] - - *) Add new functions - ERR_peek_last_error - ERR_peek_last_error_line - ERR_peek_last_error_line_data. - These are similar to - ERR_peek_error - ERR_peek_error_line - ERR_peek_error_line_data, - but report on the latest error recorded rather than the first one - still in the error queue. - [Ben Laurie, Bodo Moeller] - - *) default_algorithms option in ENGINE config module. This allows things - like: - default_algorithms = ALL - default_algorithms = RSA, DSA, RAND, CIPHERS, DIGESTS - [Steve Henson] - - *) Preliminary ENGINE config module. - [Steve Henson] - - *) New experimental application configuration code. - [Steve Henson] - - *) Change the AES code to follow the same name structure as all other - symmetric ciphers, and behave the same way. Move everything to - the directory crypto/aes, thereby obsoleting crypto/rijndael. - [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte] - - *) SECURITY: remove unsafe setjmp/signal interaction from ui_openssl.c. - [Ben Laurie and Theo de Raadt] - - *) Add option to output public keys in req command. - [Massimiliano Pala madwolf@openca.org] - - *) Use wNAFs in EC_POINTs_mul() for improved efficiency - (up to about 10% better than before for P-192 and P-224). - [Bodo Moeller] - - *) New functions/macros - - SSL_CTX_set_msg_callback(ctx, cb) - SSL_CTX_set_msg_callback_arg(ctx, arg) - SSL_set_msg_callback(ssl, cb) - SSL_set_msg_callback_arg(ssl, arg) - - to request calling a callback function - - void cb(int write_p, int version, int content_type, - const void *buf, size_t len, SSL *ssl, void *arg) - - whenever a protocol message has been completely received - (write_p == 0) or sent (write_p == 1). Here 'version' is the - protocol version according to which the SSL library interprets - the current protocol message (SSL2_VERSION, SSL3_VERSION, or - TLS1_VERSION). 'content_type' is 0 in the case of SSL 2.0, or - the content type as defined in the SSL 3.0/TLS 1.0 protocol - specification (change_cipher_spec(20), alert(21), handshake(22)). - 'buf' and 'len' point to the actual message, 'ssl' to the - SSL object, and 'arg' is the application-defined value set by - SSL[_CTX]_set_msg_callback_arg(). - - 'openssl s_client' and 'openssl s_server' have new '-msg' options - to enable a callback that displays all protocol messages. - [Bodo Moeller] - - *) Change the shared library support so shared libraries are built as - soon as the corresponding static library is finished, and thereby get - openssl and the test programs linked against the shared library. - This still only happens when the keyword "shard" has been given to - the configuration scripts. - - NOTE: shared library support is still an experimental thing, and - backward binary compatibility is still not guaranteed. - ["Maciej W. Rozycki" <macro@ds2.pg.gda.pl> and Richard Levitte] - - *) Add support for Subject Information Access extension. - [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>] - - *) Make BUF_MEM_grow() behaviour more consistent: Initialise to zero - additional bytes when new memory had to be allocated, not just - when reusing an existing buffer. - [Bodo Moeller] - - *) New command line and configuration option 'utf8' for the req command. - This allows field values to be specified as UTF8 strings. - [Steve Henson] - - *) Add -multi and -mr options to "openssl speed" - giving multiple parallel - runs for the former and machine-readable output for the latter. - [Ben Laurie] - - *) Add '-noemailDN' option to 'openssl ca'. This prevents inclusion - of the e-mail address in the DN (i.e., it will go into a certificate - extension only). The new configuration file option 'email_in_dn = no' - has the same effect. - [Massimiliano Pala madwolf@openca.org] - - *) Change all functions with names starting with des_ to be starting - with DES_ instead. Add wrappers that are compatible with libdes, - but are named _ossl_old_des_*. Finally, add macros that map the - des_* symbols to the corresponding _ossl_old_des_* if libdes - compatibility is desired. If OpenSSL 0.9.6c compatibility is - desired, the des_* symbols will be mapped to DES_*, with one - exception. - - Since we provide two compatibility mappings, the user needs to - define the macro OPENSSL_DES_LIBDES_COMPATIBILITY if libdes - compatibility is desired. The default (i.e., when that macro - isn't defined) is OpenSSL 0.9.6c compatibility. - - There are also macros that enable and disable the support of old - des functions altogether. Those are OPENSSL_ENABLE_OLD_DES_SUPPORT - and OPENSSL_DISABLE_OLD_DES_SUPPORT. If none or both of those - are defined, the default will apply: to support the old des routines. - - In either case, one must include openssl/des.h to get the correct - definitions. Do not try to just include openssl/des_old.h, that - won't work. - - NOTE: This is a major break of an old API into a new one. Software - authors are encouraged to switch to the DES_ style functions. Some - time in the future, des_old.h and the libdes compatibility functions - will be disable (i.e. OPENSSL_DISABLE_OLD_DES_SUPPORT will be the - default), and then completely removed. - [Richard Levitte] - - *) Test for certificates which contain unsupported critical extensions. - If such a certificate is found during a verify operation it is - rejected by default: this behaviour can be overridden by either - handling the new error X509_V_ERR_UNHANDLED_CRITICAL_EXTENSION or - by setting the verify flag X509_V_FLAG_IGNORE_CRITICAL. A new function - X509_supported_extension() has also been added which returns 1 if a - particular extension is supported. - [Steve Henson] - - *) Modify the behaviour of EVP cipher functions in similar way to digests - to retain compatibility with existing code. - [Steve Henson] - - *) Modify the behaviour of EVP_DigestInit() and EVP_DigestFinal() to retain - compatibility with existing code. In particular the 'ctx' parameter does - not have to be to be initialized before the call to EVP_DigestInit() and - it is tidied up after a call to EVP_DigestFinal(). New function - EVP_DigestFinal_ex() which does not tidy up the ctx. Similarly function - EVP_MD_CTX_copy() changed to not require the destination to be - initialized valid and new function EVP_MD_CTX_copy_ex() added which - requires the destination to be valid. - - Modify all the OpenSSL digest calls to use EVP_DigestInit_ex(), - EVP_DigestFinal_ex() and EVP_MD_CTX_copy_ex(). - [Steve Henson] - - *) Change ssl3_get_message (ssl/s3_both.c) and the functions using it - so that complete 'Handshake' protocol structures are kept in memory - instead of overwriting 'msg_type' and 'length' with 'body' data. - [Bodo Moeller] - - *) Add an implementation of SSL_add_dir_cert_subjects_to_stack for Win32. - [Massimo Santin via Richard Levitte] - - *) Major restructuring to the underlying ENGINE code. This includes - reduction of linker bloat, separation of pure "ENGINE" manipulation - (initialisation, etc) from functionality dealing with implementations - of specific crypto interfaces. This change also introduces integrated - support for symmetric ciphers and digest implementations - so ENGINEs - can now accelerate these by providing EVP_CIPHER and EVP_MD - implementations of their own. This is detailed in crypto/engine/README - as it couldn't be adequately described here. However, there are a few - API changes worth noting - some RSA, DSA, DH, and RAND functions that - were changed in the original introduction of ENGINE code have now - reverted back - the hooking from this code to ENGINE is now a good - deal more passive and at run-time, operations deal directly with - RSA_METHODs, DSA_METHODs (etc) as they did before, rather than - dereferencing through an ENGINE pointer any more. Also, the ENGINE - functions dealing with BN_MOD_EXP[_CRT] handlers have been removed - - they were not being used by the framework as there is no concept of a - BIGNUM_METHOD and they could not be generalised to the new - 'ENGINE_TABLE' mechanism that underlies the new code. Similarly, - ENGINE_cpy() has been removed as it cannot be consistently defined in - the new code. - [Geoff Thorpe] - - *) Change ASN1_GENERALIZEDTIME_check() to allow fractional seconds. - [Steve Henson] - - *) Change mkdef.pl to sort symbols that get the same entry number, - and make sure the automatically generated functions ERR_load_* - become part of libeay.num as well. - [Richard Levitte] - - *) New function SSL_renegotiate_pending(). This returns true once - renegotiation has been requested (either SSL_renegotiate() call - or HelloRequest/ClientHello received from the peer) and becomes - false once a handshake has been completed. - (For servers, SSL_renegotiate() followed by SSL_do_handshake() - sends a HelloRequest, but does not ensure that a handshake takes - place. SSL_renegotiate_pending() is useful for checking if the - client has followed the request.) - [Bodo Moeller] - - *) New SSL option SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION. - By default, clients may request session resumption even during - renegotiation (if session ID contexts permit); with this option, - session resumption is possible only in the first handshake. - - SSL_OP_ALL is now 0x00000FFFL instead of 0x000FFFFFL. This makes - more bits available for options that should not be part of - SSL_OP_ALL (such as SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION). - [Bodo Moeller] - - *) Add some demos for certificate and certificate request creation. - [Steve Henson] - - *) Make maximum certificate chain size accepted from the peer application - settable (SSL*_get/set_max_cert_list()), as proposed by - "Douglas E. Engert" <deengert@anl.gov>. - [Lutz Jaenicke] - - *) Add support for shared libraries for Unixware-7 - (Boyd Lynn Gerber <gerberb@zenez.com>). - [Lutz Jaenicke] - - *) Add a "destroy" handler to ENGINEs that allows structural cleanup to - be done prior to destruction. Use this to unload error strings from - ENGINEs that load their own error strings. NB: This adds two new API - functions to "get" and "set" this destroy handler in an ENGINE. - [Geoff Thorpe] - - *) Alter all existing ENGINE implementations (except "openssl" and - "openbsd") to dynamically instantiate their own error strings. This - makes them more flexible to be built both as statically-linked ENGINEs - and self-contained shared-libraries loadable via the "dynamic" ENGINE. - Also, add stub code to each that makes building them as self-contained - shared-libraries easier (see README.ENGINE). - [Geoff Thorpe] - - *) Add a "dynamic" ENGINE that provides a mechanism for binding ENGINE - implementations into applications that are completely implemented in - self-contained shared-libraries. The "dynamic" ENGINE exposes control - commands that can be used to configure what shared-library to load and - to control aspects of the way it is handled. Also, made an update to - the README.ENGINE file that brings its information up-to-date and - provides some information and instructions on the "dynamic" ENGINE - (ie. how to use it, how to build "dynamic"-loadable ENGINEs, etc). - [Geoff Thorpe] - - *) Make it possible to unload ranges of ERR strings with a new - "ERR_unload_strings" function. - [Geoff Thorpe] - - *) Add a copy() function to EVP_MD. - [Ben Laurie] - - *) Make EVP_MD routines take a context pointer instead of just the - md_data void pointer. - [Ben Laurie] - - *) Add flags to EVP_MD and EVP_MD_CTX. EVP_MD_FLAG_ONESHOT indicates - that the digest can only process a single chunk of data - (typically because it is provided by a piece of - hardware). EVP_MD_CTX_FLAG_ONESHOT indicates that the application - is only going to provide a single chunk of data, and hence the - framework needn't accumulate the data for oneshot drivers. - [Ben Laurie] - - *) As with "ERR", make it possible to replace the underlying "ex_data" - functions. This change also alters the storage and management of global - ex_data state - it's now all inside ex_data.c and all "class" code (eg. - RSA, BIO, SSL_CTX, etc) no longer stores its own STACKS and per-class - index counters. The API functions that use this state have been changed - to take a "class_index" rather than pointers to the class's local STACK - and counter, and there is now an API function to dynamically create new - classes. This centralisation allows us to (a) plug a lot of the - thread-safety problems that existed, and (b) makes it possible to clean - up all allocated state using "CRYPTO_cleanup_all_ex_data()". W.r.t. (b) - such data would previously have always leaked in application code and - workarounds were in place to make the memory debugging turn a blind eye - to it. Application code that doesn't use this new function will still - leak as before, but their memory debugging output will announce it now - rather than letting it slide. - - Besides the addition of CRYPTO_cleanup_all_ex_data(), another API change - induced by the "ex_data" overhaul is that X509_STORE_CTX_init() now - has a return value to indicate success or failure. - [Geoff Thorpe] - - *) Make it possible to replace the underlying "ERR" functions such that the - global state (2 LHASH tables and 2 locks) is only used by the "default" - implementation. This change also adds two functions to "get" and "set" - the implementation prior to it being automatically set the first time - any other ERR function takes place. Ie. an application can call "get", - pass the return value to a module it has just loaded, and that module - can call its own "set" function using that value. This means the - module's "ERR" operations will use (and modify) the error state in the - application and not in its own statically linked copy of OpenSSL code. - [Geoff Thorpe] - - *) Give DH, DSA, and RSA types their own "**_up_ref()" function to increment - reference counts. This performs normal REF_PRINT/REF_CHECK macros on - the operation, and provides a more encapsulated way for external code - (crypto/evp/ and ssl/) to do this. Also changed the evp and ssl code - to use these functions rather than manually incrementing the counts. - - Also rename "DSO_up()" function to more descriptive "DSO_up_ref()". - [Geoff Thorpe] - - *) Add EVP test program. - [Ben Laurie] - - *) Add symmetric cipher support to ENGINE. Expect the API to change! - [Ben Laurie] - - *) New CRL functions: X509_CRL_set_version(), X509_CRL_set_issuer_name() - X509_CRL_set_lastUpdate(), X509_CRL_set_nextUpdate(), X509_CRL_sort(), - X509_REVOKED_set_serialNumber(), and X509_REVOKED_set_revocationDate(). - These allow a CRL to be built without having to access X509_CRL fields - directly. Modify 'ca' application to use new functions. - [Steve Henson] - - *) Move SSL_OP_TLS_ROLLBACK_BUG out of the SSL_OP_ALL list of recommended - bug workarounds. Rollback attack detection is a security feature. - The problem will only arise on OpenSSL servers when TLSv1 is not - available (sslv3_server_method() or SSL_OP_NO_TLSv1). - Software authors not wanting to support TLSv1 will have special reasons - for their choice and can explicitly enable this option. - [Bodo Moeller, Lutz Jaenicke] - - *) Rationalise EVP so it can be extended: don't include a union of - cipher/digest structures, add init/cleanup functions for EVP_MD_CTX - (similar to those existing for EVP_CIPHER_CTX). - Usage example: - - EVP_MD_CTX md; - - EVP_MD_CTX_init(&md); /* new function call */ - EVP_DigestInit(&md, EVP_sha1()); - EVP_DigestUpdate(&md, in, len); - EVP_DigestFinal(&md, out, NULL); - EVP_MD_CTX_cleanup(&md); /* new function call */ - - [Ben Laurie] - - *) Make DES key schedule conform to the usual scheme, as well as - correcting its structure. This means that calls to DES functions - now have to pass a pointer to a des_key_schedule instead of a - plain des_key_schedule (which was actually always a pointer - anyway): E.g., - - des_key_schedule ks; - - des_set_key_checked(..., &ks); - des_ncbc_encrypt(..., &ks, ...); - - (Note that a later change renames 'des_...' into 'DES_...'.) - [Ben Laurie] - - *) Initial reduction of linker bloat: the use of some functions, such as - PEM causes large amounts of unused functions to be linked in due to - poor organisation. For example pem_all.c contains every PEM function - which has a knock on effect of linking in large amounts of (unused) - ASN1 code. Grouping together similar functions and splitting unrelated - functions prevents this. - [Steve Henson] - - *) Cleanup of EVP macros. - [Ben Laurie] - - *) Change historical references to {NID,SN,LN}_des_ede and ede3 to add the - correct _ecb suffix. - [Ben Laurie] - - *) Add initial OCSP responder support to ocsp application. The - revocation information is handled using the text based index - use by the ca application. The responder can either handle - requests generated internally, supplied in files (for example - via a CGI script) or using an internal minimal server. - [Steve Henson] - - *) Add configuration choices to get zlib compression for TLS. - [Richard Levitte] - - *) Changes to Kerberos SSL for RFC 2712 compliance: - 1. Implemented real KerberosWrapper, instead of just using - KRB5 AP_REQ message. [Thanks to Simon Wilkinson <sxw@sxw.org.uk>] - 2. Implemented optional authenticator field of KerberosWrapper. - - Added openssl-style ASN.1 macros for Kerberos ticket, ap_req, - and authenticator structs; see crypto/krb5/. - - Generalized Kerberos calls to support multiple Kerberos libraries. - [Vern Staats <staatsvr@asc.hpc.mil>, - Jeffrey Altman <jaltman@columbia.edu> - via Richard Levitte] - - *) Cause 'openssl speed' to use fully hard-coded DSA keys as it - already does with RSA. testdsa.h now has 'priv_key/pub_key' - values for each of the key sizes rather than having just - parameters (and 'speed' generating keys each time). - [Geoff Thorpe] - - *) Speed up EVP routines. - Before: -encrypt -type 8 bytes 64 bytes 256 bytes 1024 bytes 8192 bytes -des-cbc 4408.85k 5560.51k 5778.46k 5862.20k 5825.16k -des-cbc 4389.55k 5571.17k 5792.23k 5846.91k 5832.11k -des-cbc 4394.32k 5575.92k 5807.44k 5848.37k 5841.30k -decrypt -des-cbc 3482.66k 5069.49k 5496.39k 5614.16k 5639.28k -des-cbc 3480.74k 5068.76k 5510.34k 5609.87k 5635.52k -des-cbc 3483.72k 5067.62k 5504.60k 5708.01k 5724.80k - After: -encrypt -des-cbc 4660.16k 5650.19k 5807.19k 5827.13k 5783.32k -decrypt -des-cbc 3624.96k 5258.21k 5530.91k 5624.30k 5628.26k - [Ben Laurie] - - *) Added the OS2-EMX target. - ["Brian Havard" <brianh@kheldar.apana.org.au> and Richard Levitte] - - *) Rewrite apps to use NCONF routines instead of the old CONF. New functions - to support NCONF routines in extension code. New function CONF_set_nconf() - to allow functions which take an NCONF to also handle the old LHASH - structure: this means that the old CONF compatible routines can be - retained (in particular wrt extensions) without having to duplicate the - code. New function X509V3_add_ext_nconf_sk to add extensions to a stack. - [Steve Henson] - - *) Enhance the general user interface with mechanisms for inner control - and with possibilities to have yes/no kind of prompts. - [Richard Levitte] - - *) Change all calls to low level digest routines in the library and - applications to use EVP. Add missing calls to HMAC_cleanup() and - don't assume HMAC_CTX can be copied using memcpy(). - [Verdon Walker <VWalker@novell.com>, Steve Henson] - - *) Add the possibility to control engines through control names but with - arbitrary arguments instead of just a string. - Change the key loaders to take a UI_METHOD instead of a callback - function pointer. NOTE: this breaks binary compatibility with earlier - versions of OpenSSL [engine]. - Adapt the nCipher code for these new conditions and add a card insertion - callback. - [Richard Levitte] - - *) Enhance the general user interface with mechanisms to better support - dialog box interfaces, application-defined prompts, the possibility - to use defaults (for example default passwords from somewhere else) - and interrupts/cancellations. - [Richard Levitte] - - *) Tidy up PKCS#12 attribute handling. Add support for the CSP name - attribute in PKCS#12 files, add new -CSP option to pkcs12 utility. - [Steve Henson] - - *) Fix a memory leak in 'sk_dup()' in the case reallocation fails. (Also - tidy up some unnecessarily weird code in 'sk_new()'). - [Geoff, reported by Diego Tartara <dtartara@novamens.com>] - - *) Change the key loading routines for ENGINEs to use the same kind - callback (pem_password_cb) as all other routines that need this - kind of callback. - [Richard Levitte] - - *) Increase ENTROPY_NEEDED to 32 bytes, as Rijndael can operate with - 256 bit (=32 byte) keys. Of course seeding with more entropy bytes - than this minimum value is recommended. - [Lutz Jaenicke] - - *) New random seeder for OpenVMS, using the system process statistics - that are easily reachable. - [Richard Levitte] - - *) Windows apparently can't transparently handle global - variables defined in DLLs. Initialisations such as: - - const ASN1_ITEM *it = &ASN1_INTEGER_it; - - won't compile. This is used by the any applications that need to - declare their own ASN1 modules. This was fixed by adding the option - EXPORT_VAR_AS_FN to all Win32 platforms, although this isn't strictly - needed for static libraries under Win32. - [Steve Henson] - - *) New functions X509_PURPOSE_set() and X509_TRUST_set() to handle - setting of purpose and trust fields. New X509_STORE trust and - purpose functions and tidy up setting in other SSL functions. - [Steve Henson] - - *) Add copies of X509_STORE_CTX fields and callbacks to X509_STORE - structure. These are inherited by X509_STORE_CTX when it is - initialised. This allows various defaults to be set in the - X509_STORE structure (such as flags for CRL checking and custom - purpose or trust settings) for functions which only use X509_STORE_CTX - internally such as S/MIME. - - Modify X509_STORE_CTX_purpose_inherit() so it only sets purposes and - trust settings if they are not set in X509_STORE. This allows X509_STORE - purposes and trust (in S/MIME for example) to override any set by default. - - Add command line options for CRL checking to smime, s_client and s_server - applications. - [Steve Henson] - - *) Initial CRL based revocation checking. If the CRL checking flag(s) - are set then the CRL is looked up in the X509_STORE structure and - its validity and signature checked, then if the certificate is found - in the CRL the verify fails with a revoked error. - - Various new CRL related callbacks added to X509_STORE_CTX structure. - - Command line options added to 'verify' application to support this. - - This needs some additional work, such as being able to handle multiple - CRLs with different times, extension based lookup (rather than just - by subject name) and ultimately more complete V2 CRL extension - handling. - [Steve Henson] - - *) Add a general user interface API (crypto/ui/). This is designed - to replace things like des_read_password and friends (backward - compatibility functions using this new API are provided). - The purpose is to remove prompting functions from the DES code - section as well as provide for prompting through dialog boxes in - a window system and the like. - [Richard Levitte] - - *) Add "ex_data" support to ENGINE so implementations can add state at a - per-structure level rather than having to store it globally. - [Geoff] - - *) Make it possible for ENGINE structures to be copied when retrieved by - ENGINE_by_id() if the ENGINE specifies a new flag: ENGINE_FLAGS_BY_ID_COPY. - This causes the "original" ENGINE structure to act like a template, - analogous to the RSA vs. RSA_METHOD type of separation. Because of this - operational state can be localised to each ENGINE structure, despite the - fact they all share the same "methods". New ENGINE structures returned in - this case have no functional references and the return value is the single - structural reference. This matches the single structural reference returned - by ENGINE_by_id() normally, when it is incremented on the pre-existing - ENGINE structure. - [Geoff] - - *) Fix ASN1 decoder when decoding type ANY and V_ASN1_OTHER: since this - needs to match any other type at all we need to manually clear the - tag cache. - [Steve Henson] - - *) Changes to the "openssl engine" utility to include; - - verbosity levels ('-v', '-vv', and '-vvv') that provide information - about an ENGINE's available control commands. - - executing control commands from command line arguments using the - '-pre' and '-post' switches. '-post' is only used if '-t' is - specified and the ENGINE is successfully initialised. The syntax for - the individual commands are colon-separated, for example; - openssl engine chil -pre FORK_CHECK:0 -pre SO_PATH:/lib/test.so - [Geoff] - - *) New dynamic control command support for ENGINEs. ENGINEs can now - declare their own commands (numbers), names (strings), descriptions, - and input types for run-time discovery by calling applications. A - subset of these commands are implicitly classed as "executable" - depending on their input type, and only these can be invoked through - the new string-based API function ENGINE_ctrl_cmd_string(). (Eg. this - can be based on user input, config files, etc). The distinction is - that "executable" commands cannot return anything other than a boolean - result and can only support numeric or string input, whereas some - discoverable commands may only be for direct use through - ENGINE_ctrl(), eg. supporting the exchange of binary data, function - pointers, or other custom uses. The "executable" commands are to - support parameterisations of ENGINE behaviour that can be - unambiguously defined by ENGINEs and used consistently across any - OpenSSL-based application. Commands have been added to all the - existing hardware-supporting ENGINEs, noticeably "SO_PATH" to allow - control over shared-library paths without source code alterations. - [Geoff] - - *) Changed all ENGINE implementations to dynamically allocate their - ENGINEs rather than declaring them statically. Apart from this being - necessary with the removal of the ENGINE_FLAGS_MALLOCED distinction, - this also allows the implementations to compile without using the - internal engine_int.h header. - [Geoff] - - *) Minor adjustment to "rand" code. RAND_get_rand_method() now returns a - 'const' value. Any code that should be able to modify a RAND_METHOD - should already have non-const pointers to it (ie. they should only - modify their own ones). - [Geoff] - - *) Made a variety of little tweaks to the ENGINE code. - - "atalla" and "ubsec" string definitions were moved from header files - to C code. "nuron" string definitions were placed in variables - rather than hard-coded - allowing parameterisation of these values - later on via ctrl() commands. - - Removed unused "#if 0"'d code. - - Fixed engine list iteration code so it uses ENGINE_free() to release - structural references. - - Constified the RAND_METHOD element of ENGINE structures. - - Constified various get/set functions as appropriate and added - missing functions (including a catch-all ENGINE_cpy that duplicates - all ENGINE values onto a new ENGINE except reference counts/state). - - Removed NULL parameter checks in get/set functions. Setting a method - or function to NULL is a way of cancelling out a previously set - value. Passing a NULL ENGINE parameter is just plain stupid anyway - and doesn't justify the extra error symbols and code. - - Deprecate the ENGINE_FLAGS_MALLOCED define and move the area for - flags from engine_int.h to engine.h. - - Changed prototypes for ENGINE handler functions (init(), finish(), - ctrl(), key-load functions, etc) to take an (ENGINE*) parameter. - [Geoff] - - *) Implement binary inversion algorithm for BN_mod_inverse in addition - to the algorithm using long division. The binary algorithm can be - used only if the modulus is odd. On 32-bit systems, it is faster - only for relatively small moduli (roughly 20-30% for 128-bit moduli, - roughly 5-15% for 256-bit moduli), so we use it only for moduli - up to 450 bits. In 64-bit environments, the binary algorithm - appears to be advantageous for much longer moduli; here we use it - for moduli up to 2048 bits. - [Bodo Moeller] - - *) Rewrite CHOICE field setting in ASN1_item_ex_d2i(). The old code - could not support the combine flag in choice fields. - [Steve Henson] - - *) Add a 'copy_extensions' option to the 'ca' utility. This copies - extensions from a certificate request to the certificate. - [Steve Henson] - - *) Allow multiple 'certopt' and 'nameopt' options to be separated - by commas. Add 'namopt' and 'certopt' options to the 'ca' config - file: this allows the display of the certificate about to be - signed to be customised, to allow certain fields to be included - or excluded and extension details. The old system didn't display - multicharacter strings properly, omitted fields not in the policy - and couldn't display additional details such as extensions. - [Steve Henson] - - *) Function EC_POINTs_mul for multiple scalar multiplication - of an arbitrary number of elliptic curve points - \sum scalars[i]*points[i], - optionally including the generator defined for the EC_GROUP: - scalar*generator + \sum scalars[i]*points[i]. - - EC_POINT_mul is a simple wrapper function for the typical case - that the point list has just one item (besides the optional - generator). - [Bodo Moeller] - - *) First EC_METHODs for curves over GF(p): - - EC_GFp_simple_method() uses the basic BN_mod_mul and BN_mod_sqr - operations and provides various method functions that can also - operate with faster implementations of modular arithmetic. - - EC_GFp_mont_method() reuses most functions that are part of - EC_GFp_simple_method, but uses Montgomery arithmetic. - - [Bodo Moeller; point addition and point doubling - implementation directly derived from source code provided by - Lenka Fibikova <fibikova@exp-math.uni-essen.de>] - - *) Framework for elliptic curves (crypto/ec/ec.h, crypto/ec/ec_lcl.h, - crypto/ec/ec_lib.c): - - Curves are EC_GROUP objects (with an optional group generator) - based on EC_METHODs that are built into the library. - - Points are EC_POINT objects based on EC_GROUP objects. - - Most of the framework would be able to handle curves over arbitrary - finite fields, but as there are no obvious types for fields other - than GF(p), some functions are limited to that for now. - [Bodo Moeller] - - *) Add the -HTTP option to s_server. It is similar to -WWW, but requires - that the file contains a complete HTTP response. - [Richard Levitte] - - *) Add the ec directory to mkdef.pl and mkfiles.pl. In mkdef.pl - change the def and num file printf format specifier from "%-40sXXX" - to "%-39s XXX". The latter will always guarantee a space after the - field while the former will cause them to run together if the field - is 40 of more characters long. - [Steve Henson] - - *) Constify the cipher and digest 'method' functions and structures - and modify related functions to take constant EVP_MD and EVP_CIPHER - pointers. - [Steve Henson] - - *) Hide BN_CTX structure details in bn_lcl.h instead of publishing them - in <openssl/bn.h>. Also further increase BN_CTX_NUM to 32. - [Bodo Moeller] - - *) Modify EVP_Digest*() routines so they now return values. Although the - internal software routines can never fail additional hardware versions - might. - [Steve Henson] - - *) Clean up crypto/err/err.h and change some error codes to avoid conflicts: - - Previously ERR_R_FATAL was too small and coincided with ERR_LIB_PKCS7 - (= ERR_R_PKCS7_LIB); it is now 64 instead of 32. - - ASN1 error codes - ERR_R_NESTED_ASN1_ERROR - ... - ERR_R_MISSING_ASN1_EOS - were 4 .. 9, conflicting with - ERR_LIB_RSA (= ERR_R_RSA_LIB) - ... - ERR_LIB_PEM (= ERR_R_PEM_LIB). - They are now 58 .. 63 (i.e., just below ERR_R_FATAL). - - Add new error code 'ERR_R_INTERNAL_ERROR'. - [Bodo Moeller] - - *) Don't overuse locks in crypto/err/err.c: For data retrieval, CRYPTO_r_lock - suffices. - [Bodo Moeller] - - *) New option '-subj arg' for 'openssl req' and 'openssl ca'. This - sets the subject name for a new request or supersedes the - subject name in a given request. Formats that can be parsed are - 'CN=Some Name, OU=myOU, C=IT' - and - 'CN=Some Name/OU=myOU/C=IT'. - - Add options '-batch' and '-verbose' to 'openssl req'. - [Massimiliano Pala <madwolf@hackmasters.net>] - - *) Introduce the possibility to access global variables through - functions on platform were that's the best way to handle exporting - global variables in shared libraries. To enable this functionality, - one must configure with "EXPORT_VAR_AS_FN" or defined the C macro - "OPENSSL_EXPORT_VAR_AS_FUNCTION" in crypto/opensslconf.h (the latter - is normally done by Configure or something similar). - - To implement a global variable, use the macro OPENSSL_IMPLEMENT_GLOBAL - in the source file (foo.c) like this: - - OPENSSL_IMPLEMENT_GLOBAL(int,foo)=1; - OPENSSL_IMPLEMENT_GLOBAL(double,bar); - - To declare a global variable, use the macros OPENSSL_DECLARE_GLOBAL - and OPENSSL_GLOBAL_REF in the header file (foo.h) like this: - - OPENSSL_DECLARE_GLOBAL(int,foo); - #define foo OPENSSL_GLOBAL_REF(foo) - OPENSSL_DECLARE_GLOBAL(double,bar); - #define bar OPENSSL_GLOBAL_REF(bar) - - The #defines are very important, and therefore so is including the - header file everywhere where the defined globals are used. - - The macro OPENSSL_EXPORT_VAR_AS_FUNCTION also affects the definition - of ASN.1 items, but that structure is a bit different. - - The largest change is in util/mkdef.pl which has been enhanced with - better and easier to understand logic to choose which symbols should - go into the Windows .def files as well as a number of fixes and code - cleanup (among others, algorithm keywords are now sorted - lexicographically to avoid constant rewrites). - [Richard Levitte] - - *) In BN_div() keep a copy of the sign of 'num' before writing the - result to 'rm' because if rm==num the value will be overwritten - and produce the wrong result if 'num' is negative: this caused - problems with BN_mod() and BN_nnmod(). - [Steve Henson] - - *) Function OCSP_request_verify(). This checks the signature on an - OCSP request and verifies the signer certificate. The signer - certificate is just checked for a generic purpose and OCSP request - trust settings. - [Steve Henson] - - *) Add OCSP_check_validity() function to check the validity of OCSP - responses. OCSP responses are prepared in real time and may only - be a few seconds old. Simply checking that the current time lies - between thisUpdate and nextUpdate max reject otherwise valid responses - caused by either OCSP responder or client clock inaccuracy. Instead - we allow thisUpdate and nextUpdate to fall within a certain period of - the current time. The age of the response can also optionally be - checked. Two new options -validity_period and -status_age added to - ocsp utility. - [Steve Henson] - - *) If signature or public key algorithm is unrecognized print out its - OID rather that just UNKNOWN. - [Steve Henson] - - *) Change OCSP_cert_to_id() to tolerate a NULL subject certificate and - OCSP_cert_id_new() a NULL serialNumber. This allows a partial certificate - ID to be generated from the issuer certificate alone which can then be - passed to OCSP_id_issuer_cmp(). - [Steve Henson] - - *) New compilation option ASN1_ITEM_FUNCTIONS. This causes the new - ASN1 modules to export functions returning ASN1_ITEM pointers - instead of the ASN1_ITEM structures themselves. This adds several - new macros which allow the underlying ASN1 function/structure to - be accessed transparently. As a result code should not use ASN1_ITEM - references directly (such as &X509_it) but instead use the relevant - macros (such as ASN1_ITEM_rptr(X509)). This option is to allow - use of the new ASN1 code on platforms where exporting structures - is problematical (for example in shared libraries) but exporting - functions returning pointers to structures is not. - [Steve Henson] - - *) Add support for overriding the generation of SSL/TLS session IDs. - These callbacks can be registered either in an SSL_CTX or per SSL. - The purpose of this is to allow applications to control, if they wish, - the arbitrary values chosen for use as session IDs, particularly as it - can be useful for session caching in multiple-server environments. A - command-line switch for testing this (and any client code that wishes - to use such a feature) has been added to "s_server". - [Geoff Thorpe, Lutz Jaenicke] - - *) Modify mkdef.pl to recognise and parse preprocessor conditionals - of the form '#if defined(...) || defined(...) || ...' and - '#if !defined(...) && !defined(...) && ...'. This also avoids - the growing number of special cases it was previously handling. - [Richard Levitte] - - *) Make all configuration macros available for application by making - sure they are available in opensslconf.h, by giving them names starting - with "OPENSSL_" to avoid conflicts with other packages and by making - sure e_os2.h will cover all platform-specific cases together with - opensslconf.h. - Additionally, it is now possible to define configuration/platform- - specific names (called "system identities"). In the C code, these - are prefixed with "OPENSSL_SYSNAME_". e_os2.h will create another - macro with the name beginning with "OPENSSL_SYS_", which is determined - from "OPENSSL_SYSNAME_*" or compiler-specific macros depending on - what is available. - [Richard Levitte] - - *) New option -set_serial to 'req' and 'x509' this allows the serial - number to use to be specified on the command line. Previously self - signed certificates were hard coded with serial number 0 and the - CA options of 'x509' had to use a serial number in a file which was - auto incremented. - [Steve Henson] - - *) New options to 'ca' utility to support V2 CRL entry extensions. - Currently CRL reason, invalidity date and hold instruction are - supported. Add new CRL extensions to V3 code and some new objects. - [Steve Henson] - - *) New function EVP_CIPHER_CTX_set_padding() this is used to - disable standard block padding (aka PKCS#5 padding) in the EVP - API, which was previously mandatory. This means that the data is - not padded in any way and so the total length much be a multiple - of the block size, otherwise an error occurs. - [Steve Henson] - - *) Initial (incomplete) OCSP SSL support. - [Steve Henson] - - *) New function OCSP_parse_url(). This splits up a URL into its host, - port and path components: primarily to parse OCSP URLs. New -url - option to ocsp utility. - [Steve Henson] - - *) New nonce behavior. The return value of OCSP_check_nonce() now - reflects the various checks performed. Applications can decide - whether to tolerate certain situations such as an absent nonce - in a response when one was present in a request: the ocsp application - just prints out a warning. New function OCSP_add1_basic_nonce() - this is to allow responders to include a nonce in a response even if - the request is nonce-less. - [Steve Henson] - - *) Disable stdin buffering in load_cert (apps/apps.c) so that no certs are - skipped when using openssl x509 multiple times on a single input file, - e.g. "(openssl x509 -out cert1; openssl x509 -out cert2) <certs". - [Bodo Moeller] - - *) Make ASN1_UTCTIME_set_string() and ASN1_GENERALIZEDTIME_set_string() - set string type: to handle setting ASN1_TIME structures. Fix ca - utility to correctly initialize revocation date of CRLs. - [Steve Henson] - - *) New option SSL_OP_CIPHER_SERVER_PREFERENCE allows the server to override - the clients preferred ciphersuites and rather use its own preferences. - Should help to work around M$ SGC (Server Gated Cryptography) bug in - Internet Explorer by ensuring unchanged hash method during stepup. - (Also replaces the broken/deactivated SSL_OP_NON_EXPORT_FIRST option.) - [Lutz Jaenicke] - - *) Make mkdef.pl recognise all DECLARE_ASN1 macros, change rijndael - to aes and add a new 'exist' option to print out symbols that don't - appear to exist. - [Steve Henson] - - *) Additional options to ocsp utility to allow flags to be set and - additional certificates supplied. - [Steve Henson] - - *) Add the option -VAfile to 'openssl ocsp', so the user can give the - OCSP client a number of certificate to only verify the response - signature against. - [Richard Levitte] - - *) Update Rijndael code to version 3.0 and change EVP AES ciphers to - handle the new API. Currently only ECB, CBC modes supported. Add new - AES OIDs. - - Add TLS AES ciphersuites as described in RFC3268, "Advanced - Encryption Standard (AES) Ciphersuites for Transport Layer - Security (TLS)". (In beta versions of OpenSSL 0.9.7, these were - not enabled by default and were not part of the "ALL" ciphersuite - alias because they were not yet official; they could be - explicitly requested by specifying the "AESdraft" ciphersuite - group alias. In the final release of OpenSSL 0.9.7, the group - alias is called "AES" and is part of "ALL".) - [Ben Laurie, Steve Henson, Bodo Moeller] - - *) New function OCSP_copy_nonce() to copy nonce value (if present) from - request to response. - [Steve Henson] - - *) Functions for OCSP responders. OCSP_request_onereq_count(), - OCSP_request_onereq_get0(), OCSP_onereq_get0_id() and OCSP_id_get0_info() - extract information from a certificate request. OCSP_response_create() - creates a response and optionally adds a basic response structure. - OCSP_basic_add1_status() adds a complete single response to a basic - response and returns the OCSP_SINGLERESP structure just added (to allow - extensions to be included for example). OCSP_basic_add1_cert() adds a - certificate to a basic response and OCSP_basic_sign() signs a basic - response with various flags. New helper functions ASN1_TIME_check() - (checks validity of ASN1_TIME structure) and ASN1_TIME_to_generalizedtime() - (converts ASN1_TIME to GeneralizedTime). - [Steve Henson] - - *) Various new functions. EVP_Digest() combines EVP_Digest{Init,Update,Final}() - in a single operation. X509_get0_pubkey_bitstr() extracts the public_key - structure from a certificate. X509_pubkey_digest() digests the public_key - contents: this is used in various key identifiers. - [Steve Henson] - - *) Make sk_sort() tolerate a NULL argument. - [Steve Henson reported by Massimiliano Pala <madwolf@comune.modena.it>] - - *) New OCSP verify flag OCSP_TRUSTOTHER. When set the "other" certificates - passed by the function are trusted implicitly. If any of them signed the - response then it is assumed to be valid and is not verified. - [Steve Henson] - - *) In PKCS7_set_type() initialise content_type in PKCS7_ENC_CONTENT - to data. This was previously part of the PKCS7 ASN1 code. This - was causing problems with OpenSSL created PKCS#12 and PKCS#7 structures. - [Steve Henson, reported by Kenneth R. Robinette - <support@securenetterm.com>] - - *) Add CRYPTO_push_info() and CRYPTO_pop_info() calls to new ASN1 - routines: without these tracing memory leaks is very painful. - Fix leaks in PKCS12 and PKCS7 routines. - [Steve Henson] - - *) Make X509_time_adj() cope with the new behaviour of ASN1_TIME_new(). - Previously it initialised the 'type' argument to V_ASN1_UTCTIME which - effectively meant GeneralizedTime would never be used. Now it - is initialised to -1 but X509_time_adj() now has to check the value - and use ASN1_TIME_set() if the value is not V_ASN1_UTCTIME or - V_ASN1_GENERALIZEDTIME, without this it always uses GeneralizedTime. - [Steve Henson, reported by Kenneth R. Robinette - <support@securenetterm.com>] - - *) Fixes to BN_to_ASN1_INTEGER when bn is zero. This would previously - result in a zero length in the ASN1_INTEGER structure which was - not consistent with the structure when d2i_ASN1_INTEGER() was used - and would cause ASN1_INTEGER_cmp() to fail. Enhance s2i_ASN1_INTEGER() - to cope with hex and negative integers. Fix bug in i2a_ASN1_INTEGER() - where it did not print out a minus for negative ASN1_INTEGER. - [Steve Henson] - - *) Add summary printout to ocsp utility. The various functions which - convert status values to strings have been renamed to: - OCSP_response_status_str(), OCSP_cert_status_str() and - OCSP_crl_reason_str() and are no longer static. New options - to verify nonce values and to disable verification. OCSP response - printout format cleaned up. - [Steve Henson] - - *) Add additional OCSP certificate checks. These are those specified - in RFC2560. This consists of two separate checks: the CA of the - certificate being checked must either be the OCSP signer certificate - or the issuer of the OCSP signer certificate. In the latter case the - OCSP signer certificate must contain the OCSP signing extended key - usage. This check is performed by attempting to match the OCSP - signer or the OCSP signer CA to the issuerNameHash and issuerKeyHash - in the OCSP_CERTID structures of the response. - [Steve Henson] - - *) Initial OCSP certificate verification added to OCSP_basic_verify() - and related routines. This uses the standard OpenSSL certificate - verify routines to perform initial checks (just CA validity) and - to obtain the certificate chain. Then additional checks will be - performed on the chain. Currently the root CA is checked to see - if it is explicitly trusted for OCSP signing. This is used to set - a root CA as a global signing root: that is any certificate that - chains to that CA is an acceptable OCSP signing certificate. - [Steve Henson] - - *) New '-extfile ...' option to 'openssl ca' for reading X.509v3 - extensions from a separate configuration file. - As when reading extensions from the main configuration file, - the '-extensions ...' option may be used for specifying the - section to use. - [Massimiliano Pala <madwolf@comune.modena.it>] - - *) New OCSP utility. Allows OCSP requests to be generated or - read. The request can be sent to a responder and the output - parsed, outputted or printed in text form. Not complete yet: - still needs to check the OCSP response validity. - [Steve Henson] - - *) New subcommands for 'openssl ca': - 'openssl ca -status <serial>' prints the status of the cert with - the given serial number (according to the index file). - 'openssl ca -updatedb' updates the expiry status of certificates - in the index file. - [Massimiliano Pala <madwolf@comune.modena.it>] - - *) New '-newreq-nodes' command option to CA.pl. This is like - '-newreq', but calls 'openssl req' with the '-nodes' option - so that the resulting key is not encrypted. - [Damien Miller <djm@mindrot.org>] - - *) New configuration for the GNU Hurd. - [Jonathan Bartlett <johnnyb@wolfram.com> via Richard Levitte] - - *) Initial code to implement OCSP basic response verify. This - is currently incomplete. Currently just finds the signer's - certificate and verifies the signature on the response. - [Steve Henson] - - *) New SSLeay_version code SSLEAY_DIR to determine the compiled-in - value of OPENSSLDIR. This is available via the new '-d' option - to 'openssl version', and is also included in 'openssl version -a'. - [Bodo Moeller] - - *) Allowing defining memory allocation callbacks that will be given - file name and line number information in additional arguments - (a const char* and an int). The basic functionality remains, as - well as the original possibility to just replace malloc(), - realloc() and free() by functions that do not know about these - additional arguments. To register and find out the current - settings for extended allocation functions, the following - functions are provided: - - CRYPTO_set_mem_ex_functions - CRYPTO_set_locked_mem_ex_functions - CRYPTO_get_mem_ex_functions - CRYPTO_get_locked_mem_ex_functions - - These work the same way as CRYPTO_set_mem_functions and friends. - CRYPTO_get_[locked_]mem_functions now writes 0 where such an - extended allocation function is enabled. - Similarly, CRYPTO_get_[locked_]mem_ex_functions writes 0 where - a conventional allocation function is enabled. - [Richard Levitte, Bodo Moeller] - - *) Finish off removing the remaining LHASH function pointer casts. - There should no longer be any prototype-casting required when using - the LHASH abstraction, and any casts that remain are "bugs". See - the callback types and macros at the head of lhash.h for details - (and "OBJ_cleanup" in crypto/objects/obj_dat.c as an example). - [Geoff Thorpe] - - *) Add automatic query of EGD sockets in RAND_poll() for the unix variant. - If /dev/[u]random devices are not available or do not return enough - entropy, EGD style sockets (served by EGD or PRNGD) will automatically - be queried. - The locations /var/run/egd-pool, /dev/egd-pool, /etc/egd-pool, and - /etc/entropy will be queried once each in this sequence, querying stops - when enough entropy was collected without querying more sockets. - [Lutz Jaenicke] - - *) Change the Unix RAND_poll() variant to be able to poll several - random devices, as specified by DEVRANDOM, until a sufficient amount - of data has been collected. We spend at most 10 ms on each file - (select timeout) and read in non-blocking mode. DEVRANDOM now - defaults to the list "/dev/urandom", "/dev/random", "/dev/srandom" - (previously it was just the string "/dev/urandom"), so on typical - platforms the 10 ms delay will never occur. - Also separate out the Unix variant to its own file, rand_unix.c. - For VMS, there's a currently-empty rand_vms.c. - [Richard Levitte] - - *) Move OCSP client related routines to ocsp_cl.c. These - provide utility functions which an application needing - to issue a request to an OCSP responder and analyse the - response will typically need: as opposed to those which an - OCSP responder itself would need which will be added later. - - OCSP_request_sign() signs an OCSP request with an API similar - to PKCS7_sign(). OCSP_response_status() returns status of OCSP - response. OCSP_response_get1_basic() extracts basic response - from response. OCSP_resp_find_status(): finds and extracts status - information from an OCSP_CERTID structure (which will be created - when the request structure is built). These are built from lower - level functions which work on OCSP_SINGLERESP structures but - won't normally be used unless the application wishes to examine - extensions in the OCSP response for example. - - Replace nonce routines with a pair of functions. - OCSP_request_add1_nonce() adds a nonce value and optionally - generates a random value. OCSP_check_nonce() checks the - validity of the nonce in an OCSP response. - [Steve Henson] - - *) Change function OCSP_request_add() to OCSP_request_add0_id(). - This doesn't copy the supplied OCSP_CERTID and avoids the - need to free up the newly created id. Change return type - to OCSP_ONEREQ to return the internal OCSP_ONEREQ structure. - This can then be used to add extensions to the request. - Deleted OCSP_request_new(), since most of its functionality - is now in OCSP_REQUEST_new() (and the case insensitive name - clash) apart from the ability to set the request name which - will be added elsewhere. - [Steve Henson] - - *) Update OCSP API. Remove obsolete extensions argument from - various functions. Extensions are now handled using the new - OCSP extension code. New simple OCSP HTTP function which - can be used to send requests and parse the response. - [Steve Henson] - - *) Fix the PKCS#7 (S/MIME) code to work with new ASN1. Two new - ASN1_ITEM structures help with sign and verify. PKCS7_ATTR_SIGN - uses the special reorder version of SET OF to sort the attributes - and reorder them to match the encoded order. This resolves a long - standing problem: a verify on a PKCS7 structure just after signing - it used to fail because the attribute order did not match the - encoded order. PKCS7_ATTR_VERIFY does not reorder the attributes: - it uses the received order. This is necessary to tolerate some broken - software that does not order SET OF. This is handled by encoding - as a SEQUENCE OF but using implicit tagging (with UNIVERSAL class) - to produce the required SET OF. - [Steve Henson] - - *) Have mk1mf.pl generate the macros OPENSSL_BUILD_SHLIBCRYPTO and - OPENSSL_BUILD_SHLIBSSL and use them appropriately in the header - files to get correct declarations of the ASN.1 item variables. - [Richard Levitte] - - *) Rewrite of PKCS#12 code to use new ASN1 functionality. Replace many - PKCS#12 macros with real functions. Fix two unrelated ASN1 bugs: - asn1_check_tlen() would sometimes attempt to use 'ctx' when it was - NULL and ASN1_TYPE was not dereferenced properly in asn1_ex_c2i(). - New ASN1 macro: DECLARE_ASN1_ITEM() which just declares the relevant - ASN1_ITEM and no wrapper functions. - [Steve Henson] - - *) New functions or ASN1_item_d2i_fp() and ASN1_item_d2i_bio(). These - replace the old function pointer based I/O routines. Change most of - the *_d2i_bio() and *_d2i_fp() functions to use these. - [Steve Henson] - - *) Enhance mkdef.pl to be more accepting about spacing in C preprocessor - lines, recognize more "algorithms" that can be deselected, and make - it complain about algorithm deselection that isn't recognised. - [Richard Levitte] - - *) New ASN1 functions to handle dup, sign, verify, digest, pack and - unpack operations in terms of ASN1_ITEM. Modify existing wrappers - to use new functions. Add NO_ASN1_OLD which can be set to remove - some old style ASN1 functions: this can be used to determine if old - code will still work when these eventually go away. - [Steve Henson] - - *) New extension functions for OCSP structures, these follow the - same conventions as certificates and CRLs. - [Steve Henson] - - *) New function X509V3_add1_i2d(). This automatically encodes and - adds an extension. Its behaviour can be customised with various - flags to append, replace or delete. Various wrappers added for - certificates and CRLs. - [Steve Henson] - - *) Fix to avoid calling the underlying ASN1 print routine when - an extension cannot be parsed. Correct a typo in the - OCSP_SERVICELOC extension. Tidy up print OCSP format. - [Steve Henson] - - *) Make mkdef.pl parse some of the ASN1 macros and add appropriate - entries for variables. - [Steve Henson] - - *) Add functionality to apps/openssl.c for detecting locking - problems: As the program is single-threaded, all we have - to do is register a locking callback using an array for - storing which locks are currently held by the program. - [Bodo Moeller] - - *) Use a lock around the call to CRYPTO_get_ex_new_index() in - SSL_get_ex_data_X509_STORE_idx(), which is used in - ssl_verify_cert_chain() and thus can be called at any time - during TLS/SSL handshakes so that thread-safety is essential. - Unfortunately, the ex_data design is not at all suited - for multi-threaded use, so it probably should be abolished. - [Bodo Moeller] - - *) Added Broadcom "ubsec" ENGINE to OpenSSL. - [Broadcom, tweaked and integrated by Geoff Thorpe] - - *) Move common extension printing code to new function - X509V3_print_extensions(). Reorganise OCSP print routines and - implement some needed OCSP ASN1 functions. Add OCSP extensions. - [Steve Henson] - - *) New function X509_signature_print() to remove duplication in some - print routines. - [Steve Henson] - - *) Add a special meaning when SET OF and SEQUENCE OF flags are both - set (this was treated exactly the same as SET OF previously). This - is used to reorder the STACK representing the structure to match the - encoding. This will be used to get round a problem where a PKCS7 - structure which was signed could not be verified because the STACK - order did not reflect the encoded order. - [Steve Henson] - - *) Reimplement the OCSP ASN1 module using the new code. - [Steve Henson] - - *) Update the X509V3 code to permit the use of an ASN1_ITEM structure - for its ASN1 operations. The old style function pointers still exist - for now but they will eventually go away. - [Steve Henson] - - *) Merge in replacement ASN1 code from the ASN1 branch. This almost - completely replaces the old ASN1 functionality with a table driven - encoder and decoder which interprets an ASN1_ITEM structure describing - the ASN1 module. Compatibility with the existing ASN1 API (i2d,d2i) is - largely maintained. Almost all of the old asn1_mac.h macro based ASN1 - has also been converted to the new form. - [Steve Henson] - - *) Change BN_mod_exp_recp so that negative moduli are tolerated - (the sign is ignored). Similarly, ignore the sign in BN_MONT_CTX_set - so that BN_mod_exp_mont and BN_mod_exp_mont_word work - for negative moduli. - [Bodo Moeller] - - *) Fix BN_uadd and BN_usub: Always return non-negative results instead - of not touching the result's sign bit. - [Bodo Moeller] - - *) BN_div bugfix: If the result is 0, the sign (res->neg) must not be - set. - [Bodo Moeller] - - *) Changed the LHASH code to use prototypes for callbacks, and created - macros to declare and implement thin (optionally static) functions - that provide type-safety and avoid function pointer casting for the - type-specific callbacks. - [Geoff Thorpe] - - *) Added Kerberos Cipher Suites to be used with TLS, as written in - RFC 2712. - [Veers Staats <staatsvr@asc.hpc.mil>, - Jeffrey Altman <jaltman@columbia.edu>, via Richard Levitte] - - *) Reformat the FAQ so the different questions and answers can be divided - in sections depending on the subject. - [Richard Levitte] - - *) Have the zlib compression code load ZLIB.DLL dynamically under - Windows. - [Richard Levitte] - - *) New function BN_mod_sqrt for computing square roots modulo a prime - (using the probabilistic Tonelli-Shanks algorithm unless - p == 3 (mod 4) or p == 5 (mod 8), which are cases that can - be handled deterministically). - [Lenka Fibikova <fibikova@exp-math.uni-essen.de>, Bodo Moeller] - - *) Make BN_mod_inverse faster by explicitly handling small quotients - in the Euclid loop. (Speed gain about 20% for small moduli [256 or - 512 bits], about 30% for larger ones [1024 or 2048 bits].) - [Bodo Moeller] - - *) New function BN_kronecker. - [Bodo Moeller] - - *) Fix BN_gcd so that it works on negative inputs; the result is - positive unless both parameters are zero. - Previously something reasonably close to an infinite loop was - possible because numbers could be growing instead of shrinking - in the implementation of Euclid's algorithm. - [Bodo Moeller] - - *) Fix BN_is_word() and BN_is_one() macros to take into account the - sign of the number in question. - - Fix BN_is_word(a,w) to work correctly for w == 0. - - The old BN_is_word(a,w) macro is now called BN_abs_is_word(a,w) - because its test if the absolute value of 'a' equals 'w'. - Note that BN_abs_is_word does *not* handle w == 0 reliably; - it exists mostly for use in the implementations of BN_is_zero(), - BN_is_one(), and BN_is_word(). - [Bodo Moeller] - - *) New function BN_swap. - [Bodo Moeller] - - *) Use BN_nnmod instead of BN_mod in crypto/bn/bn_exp.c so that - the exponentiation functions are more likely to produce reasonable - results on negative inputs. - [Bodo Moeller] - - *) Change BN_mod_mul so that the result is always non-negative. - Previously, it could be negative if one of the factors was negative; - I don't think anyone really wanted that behaviour. - [Bodo Moeller] - - *) Move BN_mod_... functions into new file crypto/bn/bn_mod.c - (except for exponentiation, which stays in crypto/bn/bn_exp.c, - and BN_mod_mul_reciprocal, which stays in crypto/bn/bn_recp.c) - and add new functions: - - BN_nnmod - BN_mod_sqr - BN_mod_add - BN_mod_add_quick - BN_mod_sub - BN_mod_sub_quick - BN_mod_lshift1 - BN_mod_lshift1_quick - BN_mod_lshift - BN_mod_lshift_quick - - These functions always generate non-negative results. - - BN_nnmod otherwise is like BN_mod (if BN_mod computes a remainder r - such that |m| < r < 0, BN_nnmod will output rem + |m| instead). - - BN_mod_XXX_quick(r, a, [b,] m) generates the same result as - BN_mod_XXX(r, a, [b,] m, ctx), but requires that a [and b] - be reduced modulo m. - [Lenka Fibikova <fibikova@exp-math.uni-essen.de>, Bodo Moeller] - -#if 0 - The following entry accidentally appeared in the CHANGES file - distributed with OpenSSL 0.9.7. The modifications described in - it do *not* apply to OpenSSL 0.9.7. - - *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there - was actually never needed) and in BN_mul(). The removal in BN_mul() - required a small change in bn_mul_part_recursive() and the addition - of the functions bn_cmp_part_words(), bn_sub_part_words() and - bn_add_part_words(), which do the same thing as bn_cmp_words(), - bn_sub_words() and bn_add_words() except they take arrays with - differing sizes. - [Richard Levitte] -#endif - - *) In 'openssl passwd', verify passwords read from the terminal - unless the '-salt' option is used (which usually means that - verification would just waste user's time since the resulting - hash is going to be compared with some given password hash) - or the new '-noverify' option is used. - - This is an incompatible change, but it does not affect - non-interactive use of 'openssl passwd' (passwords on the command - line, '-stdin' option, '-in ...' option) and thus should not - cause any problems. - [Bodo Moeller] - - *) Remove all references to RSAref, since there's no more need for it. - [Richard Levitte] - - *) Make DSO load along a path given through an environment variable - (SHLIB_PATH) with shl_load(). - [Richard Levitte] - - *) Constify the ENGINE code as a result of BIGNUM constification. - Also constify the RSA code and most things related to it. In a - few places, most notable in the depth of the ASN.1 code, ugly - casts back to non-const were required (to be solved at a later - time) - [Richard Levitte] - - *) Make it so the openssl application has all engines loaded by default. - [Richard Levitte] - - *) Constify the BIGNUM routines a little more. - [Richard Levitte] - - *) Add the following functions: - - ENGINE_load_cswift() - ENGINE_load_chil() - ENGINE_load_atalla() - ENGINE_load_nuron() - ENGINE_load_builtin_engines() - - That way, an application can itself choose if external engines that - are built-in in OpenSSL shall ever be used or not. The benefit is - that applications won't have to be linked with libdl or other dso - libraries unless it's really needed. - - Changed 'openssl engine' to load all engines on demand. - Changed the engine header files to avoid the duplication of some - declarations (they differed!). - [Richard Levitte] - - *) 'openssl engine' can now list capabilities. - [Richard Levitte] - - *) Better error reporting in 'openssl engine'. - [Richard Levitte] - - *) Never call load_dh_param(NULL) in s_server. - [Bodo Moeller] - - *) Add engine application. It can currently list engines by name and - identity, and test if they are actually available. - [Richard Levitte] - - *) Improve RPM specification file by forcing symbolic linking and making - sure the installed documentation is also owned by root.root. - [Damien Miller <djm@mindrot.org>] - - *) Give the OpenSSL applications more possibilities to make use of - keys (public as well as private) handled by engines. - [Richard Levitte] - - *) Add OCSP code that comes from CertCo. - [Richard Levitte] - - *) Add VMS support for the Rijndael code. - [Richard Levitte] - - *) Added untested support for Nuron crypto accelerator. - [Ben Laurie] - - *) Add support for external cryptographic devices. This code was - previously distributed separately as the "engine" branch. - [Geoff Thorpe, Richard Levitte] - - *) Rework the filename-translation in the DSO code. It is now possible to - have far greater control over how a "name" is turned into a filename - depending on the operating environment and any oddities about the - different shared library filenames on each system. - [Geoff Thorpe] - - *) Support threads on FreeBSD-elf in Configure. - [Richard Levitte] - - *) Fix for SHA1 assembly problem with MASM: it produces - warnings about corrupt line number information when assembling - with debugging information. This is caused by the overlapping - of two sections. - [Bernd Matthes <mainbug@celocom.de>, Steve Henson] - - *) NCONF changes. - NCONF_get_number() has no error checking at all. As a replacement, - NCONF_get_number_e() is defined (_e for "error checking") and is - promoted strongly. The old NCONF_get_number is kept around for - binary backward compatibility. - Make it possible for methods to load from something other than a BIO, - by providing a function pointer that is given a name instead of a BIO. - For example, this could be used to load configuration data from an - LDAP server. - [Richard Levitte] - - *) Fix for non blocking accept BIOs. Added new I/O special reason - BIO_RR_ACCEPT to cover this case. Previously use of accept BIOs - with non blocking I/O was not possible because no retry code was - implemented. Also added new SSL code SSL_WANT_ACCEPT to cover - this case. - [Steve Henson] - - *) Added the beginnings of Rijndael support. - [Ben Laurie] - - *) Fix for bug in DirectoryString mask setting. Add support for - X509_NAME_print_ex() in 'req' and X509_print_ex() function - to allow certificate printing to more controllable, additional - 'certopt' option to 'x509' to allow new printing options to be - set. - [Steve Henson] - - *) Clean old EAY MD5 hack from e_os.h. - [Richard Levitte] - - Changes between 0.9.6l and 0.9.6m [17 Mar 2004] - - *) Fix null-pointer assignment in do_change_cipher_spec() revealed - by using the Codenomicon TLS Test Tool (CVE-2004-0079) - [Joe Orton, Steve Henson] - - Changes between 0.9.6k and 0.9.6l [04 Nov 2003] - - *) Fix additional bug revealed by the NISCC test suite: - - Stop bug triggering large recursion when presented with - certain ASN.1 tags (CVE-2003-0851) - [Steve Henson] - - Changes between 0.9.6j and 0.9.6k [30 Sep 2003] - - *) Fix various bugs revealed by running the NISCC test suite: - - Stop out of bounds reads in the ASN1 code when presented with - invalid tags (CVE-2003-0543 and CVE-2003-0544). - - If verify callback ignores invalid public key errors don't try to check - certificate signature with the NULL public key. - - [Steve Henson] - - *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate - if the server requested one: as stated in TLS 1.0 and SSL 3.0 - specifications. - [Steve Henson] - - *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional - extra data after the compression methods not only for TLS 1.0 - but also for SSL 3.0 (as required by the specification). - [Bodo Moeller; problem pointed out by Matthias Loepfe] - - *) Change X509_certificate_type() to mark the key as exported/exportable - when it's 512 *bits* long, not 512 bytes. - [Richard Levitte] - - Changes between 0.9.6i and 0.9.6j [10 Apr 2003] - - *) Countermeasure against the Klima-Pokorny-Rosa extension of - Bleichbacher's attack on PKCS #1 v1.5 padding: treat - a protocol version number mismatch like a decryption error - in ssl3_get_client_key_exchange (ssl/s3_srvr.c). - [Bodo Moeller] - - *) Turn on RSA blinding by default in the default implementation - to avoid a timing attack. Applications that don't want it can call - RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING. - They would be ill-advised to do so in most cases. - [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller] - - *) Change RSA blinding code so that it works when the PRNG is not - seeded (in this case, the secret RSA exponent is abused as - an unpredictable seed -- if it is not unpredictable, there - is no point in blinding anyway). Make RSA blinding thread-safe - by remembering the creator's thread ID in rsa->blinding and - having all other threads use local one-time blinding factors - (this requires more computation than sharing rsa->blinding, but - avoids excessive locking; and if an RSA object is not shared - between threads, blinding will still be very fast). - [Bodo Moeller] - - Changes between 0.9.6h and 0.9.6i [19 Feb 2003] - - *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked - via timing by performing a MAC computation even if incorrect - block cipher padding has been found. This is a countermeasure - against active attacks where the attacker has to distinguish - between bad padding and a MAC verification error. (CVE-2003-0078) - - [Bodo Moeller; problem pointed out by Brice Canvel (EPFL), - Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and - Martin Vuagnoux (EPFL, Ilion)] - - Changes between 0.9.6g and 0.9.6h [5 Dec 2002] - - *) New function OPENSSL_cleanse(), which is used to cleanse a section of - memory from its contents. This is done with a counter that will - place alternating values in each byte. This can be used to solve - two issues: 1) the removal of calls to memset() by highly optimizing - compilers, and 2) cleansing with other values than 0, since those can - be read through on certain media, for example a swap space on disk. - [Geoff Thorpe] - - *) Bugfix: client side session caching did not work with external caching, - because the session->cipher setting was not restored when reloading - from the external cache. This problem was masked, when - SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG (part of SSL_OP_ALL) was set. - (Found by Steve Haslam <steve@araqnid.ddts.net>.) - [Lutz Jaenicke] - - *) Fix client_certificate (ssl/s2_clnt.c): The permissible total - length of the REQUEST-CERTIFICATE message is 18 .. 34, not 17 .. 33. - [Zeev Lieber <zeev-l@yahoo.com>] - - *) Undo an undocumented change introduced in 0.9.6e which caused - repeated calls to OpenSSL_add_all_ciphers() and - OpenSSL_add_all_digests() to be ignored, even after calling - EVP_cleanup(). - [Richard Levitte] - - *) Change the default configuration reader to deal with last line not - being properly terminated. - [Richard Levitte] - - *) Change X509_NAME_cmp() so it applies the special rules on handling - DN values that are of type PrintableString, as well as RDNs of type - emailAddress where the value has the type ia5String. - [stefank@valicert.com via Richard Levitte] - - *) Add a SSL_SESS_CACHE_NO_INTERNAL_STORE flag to take over half - the job SSL_SESS_CACHE_NO_INTERNAL_LOOKUP was inconsistently - doing, define a new flag (SSL_SESS_CACHE_NO_INTERNAL) to be - the bitwise-OR of the two for use by the majority of applications - wanting this behaviour, and update the docs. The documented - behaviour and actual behaviour were inconsistent and had been - changing anyway, so this is more a bug-fix than a behavioural - change. - [Geoff Thorpe, diagnosed by Nadav Har'El] - - *) Don't impose a 16-byte length minimum on session IDs in ssl/s3_clnt.c - (the SSL 3.0 and TLS 1.0 specifications allow any length up to 32 bytes). - [Bodo Moeller] - - *) Fix initialization code race conditions in - SSLv23_method(), SSLv23_client_method(), SSLv23_server_method(), - SSLv2_method(), SSLv2_client_method(), SSLv2_server_method(), - SSLv3_method(), SSLv3_client_method(), SSLv3_server_method(), - TLSv1_method(), TLSv1_client_method(), TLSv1_server_method(), - ssl2_get_cipher_by_char(), - ssl3_get_cipher_by_char(). - [Patrick McCormick <patrick@tellme.com>, Bodo Moeller] - - *) Reorder cleanup sequence in SSL_CTX_free(): only remove the ex_data after - the cached sessions are flushed, as the remove_cb() might use ex_data - contents. Bug found by Sam Varshavchik <mrsam@courier-mta.com> - (see [openssl.org #212]). - [Geoff Thorpe, Lutz Jaenicke] - - *) Fix typo in OBJ_txt2obj which incorrectly passed the content - length, instead of the encoding length to d2i_ASN1_OBJECT. - [Steve Henson] - - Changes between 0.9.6f and 0.9.6g [9 Aug 2002] - - *) [In 0.9.6g-engine release:] - Fix crypto/engine/vendor_defns/cswift.h for WIN32 (use '_stdcall'). - [Lynn Gazis <lgazis@rainbow.com>] - - Changes between 0.9.6e and 0.9.6f [8 Aug 2002] - - *) Fix ASN1 checks. Check for overflow by comparing with LONG_MAX - and get fix the header length calculation. - [Florian Weimer <Weimer@CERT.Uni-Stuttgart.DE>, - Alon Kantor <alonk@checkpoint.com> (and others), - Steve Henson] - - *) Use proper error handling instead of 'assertions' in buffer - overflow checks added in 0.9.6e. This prevents DoS (the - assertions could call abort()). - [Arne Ansper <arne@ats.cyber.ee>, Bodo Moeller] - - Changes between 0.9.6d and 0.9.6e [30 Jul 2002] - - *) Add various sanity checks to asn1_get_length() to reject - the ASN1 length bytes if they exceed sizeof(long), will appear - negative or the content length exceeds the length of the - supplied buffer. - [Steve Henson, Adi Stav <stav@mercury.co.il>, James Yonan <jim@ntlp.com>] - - *) Fix cipher selection routines: ciphers without encryption had no flags - for the cipher strength set and where therefore not handled correctly - by the selection routines (PR #130). - [Lutz Jaenicke] - - *) Fix EVP_dsa_sha macro. - [Nils Larsch] - - *) New option - SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS - for disabling the SSL 3.0/TLS 1.0 CBC vulnerability countermeasure - that was added in OpenSSL 0.9.6d. - - As the countermeasure turned out to be incompatible with some - broken SSL implementations, the new option is part of SSL_OP_ALL. - SSL_OP_ALL is usually employed when compatibility with weird SSL - implementations is desired (e.g. '-bugs' option to 's_client' and - 's_server'), so the new option is automatically set in many - applications. - [Bodo Moeller] - - *) Changes in security patch: - - Changes marked "(CHATS)" were sponsored by the Defense Advanced - Research Projects Agency (DARPA) and Air Force Research Laboratory, - Air Force Materiel Command, USAF, under agreement number - F30602-01-2-0537. - - *) Add various sanity checks to asn1_get_length() to reject - the ASN1 length bytes if they exceed sizeof(long), will appear - negative or the content length exceeds the length of the - supplied buffer. (CVE-2002-0659) - [Steve Henson, Adi Stav <stav@mercury.co.il>, James Yonan <jim@ntlp.com>] - - *) Assertions for various potential buffer overflows, not known to - happen in practice. - [Ben Laurie (CHATS)] - - *) Various temporary buffers to hold ASCII versions of integers were - too small for 64 bit platforms. (CVE-2002-0655) - [Matthew Byng-Maddick <mbm@aldigital.co.uk> and Ben Laurie (CHATS)> - - *) Remote buffer overflow in SSL3 protocol - an attacker could - supply an oversized session ID to a client. (CVE-2002-0656) - [Ben Laurie (CHATS)] - - *) Remote buffer overflow in SSL2 protocol - an attacker could - supply an oversized client master key. (CVE-2002-0656) - [Ben Laurie (CHATS)] - - Changes between 0.9.6c and 0.9.6d [9 May 2002] - - *) Fix crypto/asn1/a_sign.c so that 'parameters' is omitted (not - encoded as NULL) with id-dsa-with-sha1. - [Nils Larsch <nla@trustcenter.de>; problem pointed out by Bodo Moeller] - - *) Check various X509_...() return values in apps/req.c. - [Nils Larsch <nla@trustcenter.de>] - - *) Fix BASE64 decode (EVP_DecodeUpdate) for data with CR/LF ended lines: - an end-of-file condition would erroneously be flagged, when the CRLF - was just at the end of a processed block. The bug was discovered when - processing data through a buffering memory BIO handing the data to a - BASE64-decoding BIO. Bug fund and patch submitted by Pavel Tsekov - <ptsekov@syntrex.com> and Nedelcho Stanev. - [Lutz Jaenicke] - - *) Implement a countermeasure against a vulnerability recently found - in CBC ciphersuites in SSL 3.0/TLS 1.0: Send an empty fragment - before application data chunks to avoid the use of known IVs - with data potentially chosen by the attacker. - [Bodo Moeller] - - *) Fix length checks in ssl3_get_client_hello(). - [Bodo Moeller] - - *) TLS/SSL library bugfix: use s->s3->in_read_app_data differently - to prevent ssl3_read_internal() from incorrectly assuming that - ssl3_read_bytes() found application data while handshake - processing was enabled when in fact s->s3->in_read_app_data was - merely automatically cleared during the initial handshake. - [Bodo Moeller; problem pointed out by Arne Ansper <arne@ats.cyber.ee>] - - *) Fix object definitions for Private and Enterprise: they were not - recognized in their shortname (=lowercase) representation. Extend - obj_dat.pl to issue an error when using undefined keywords instead - of silently ignoring the problem (Svenning Sorensen - <sss@sss.dnsalias.net>). - [Lutz Jaenicke] - - *) Fix DH_generate_parameters() so that it works for 'non-standard' - generators, i.e. generators other than 2 and 5. (Previously, the - code did not properly initialise the 'add' and 'rem' values to - BN_generate_prime().) - - In the new general case, we do not insist that 'generator' is - actually a primitive root: This requirement is rather pointless; - a generator of the order-q subgroup is just as good, if not - better. - [Bodo Moeller] - - *) Map new X509 verification errors to alerts. Discovered and submitted by - Tom Wu <tom@arcot.com>. - [Lutz Jaenicke] - - *) Fix ssl3_pending() (ssl/s3_lib.c) to prevent SSL_pending() from - returning non-zero before the data has been completely received - when using non-blocking I/O. - [Bodo Moeller; problem pointed out by John Hughes] - - *) Some of the ciphers missed the strength entry (SSL_LOW etc). - [Ben Laurie, Lutz Jaenicke] - - *) Fix bug in SSL_clear(): bad sessions were not removed (found by - Yoram Zahavi <YoramZ@gilian.com>). - [Lutz Jaenicke] - - *) Add information about CygWin 1.3 and on, and preserve proper - configuration for the versions before that. - [Corinna Vinschen <vinschen@redhat.com> and Richard Levitte] - - *) Make removal from session cache (SSL_CTX_remove_session()) more robust: - check whether we deal with a copy of a session and do not delete from - the cache in this case. Problem reported by "Izhar Shoshani Levi" - <izhar@checkpoint.com>. - [Lutz Jaenicke] - - *) Do not store session data into the internal session cache, if it - is never intended to be looked up (SSL_SESS_CACHE_NO_INTERNAL_LOOKUP - flag is set). Proposed by Aslam <aslam@funk.com>. - [Lutz Jaenicke] - - *) Have ASN1_BIT_STRING_set_bit() really clear a bit when the requested - value is 0. - [Richard Levitte] - - *) [In 0.9.6d-engine release:] - Fix a crashbug and a logic bug in hwcrhk_load_pubkey(). - [Toomas Kiisk <vix@cyber.ee> via Richard Levitte] - - *) Add the configuration target linux-s390x. - [Neale Ferguson <Neale.Ferguson@SoftwareAG-USA.com> via Richard Levitte] - - *) The earlier bugfix for the SSL3_ST_SW_HELLO_REQ_C case of - ssl3_accept (ssl/s3_srvr.c) incorrectly used a local flag - variable as an indication that a ClientHello message has been - received. As the flag value will be lost between multiple - invocations of ssl3_accept when using non-blocking I/O, the - function may not be aware that a handshake has actually taken - place, thus preventing a new session from being added to the - session cache. - - To avoid this problem, we now set s->new_session to 2 instead of - using a local variable. - [Lutz Jaenicke, Bodo Moeller] - - *) Bugfix: Return -1 from ssl3_get_server_done (ssl3/s3_clnt.c) - if the SSL_R_LENGTH_MISMATCH error is detected. - [Geoff Thorpe, Bodo Moeller] - - *) New 'shared_ldflag' column in Configure platform table. - [Richard Levitte] - - *) Fix EVP_CIPHER_mode macro. - ["Dan S. Camper" <dan@bti.net>] - - *) Fix ssl3_read_bytes (ssl/s3_pkt.c): To ignore messages of unknown - type, we must throw them away by setting rr->length to 0. - [D P Chang <dpc@qualys.com>] - - Changes between 0.9.6b and 0.9.6c [21 dec 2001] - - *) Fix BN_rand_range bug pointed out by Dominikus Scherkl - <Dominikus.Scherkl@biodata.com>. (The previous implementation - worked incorrectly for those cases where range = 10..._2 and - 3*range is two bits longer than range.) - [Bodo Moeller] - - *) Only add signing time to PKCS7 structures if it is not already - present. - [Steve Henson] - - *) Fix crypto/objects/objects.h: "ld-ce" should be "id-ce", - OBJ_ld_ce should be OBJ_id_ce. - Also some ip-pda OIDs in crypto/objects/objects.txt were - incorrect (cf. RFC 3039). - [Matt Cooper, Frederic Giudicelli, Bodo Moeller] - - *) Release CRYPTO_LOCK_DYNLOCK when CRYPTO_destroy_dynlockid() - returns early because it has nothing to do. - [Andy Schneider <andy.schneider@bjss.co.uk>] - - *) [In 0.9.6c-engine release:] - Fix mutex callback return values in crypto/engine/hw_ncipher.c. - [Andy Schneider <andy.schneider@bjss.co.uk>] - - *) [In 0.9.6c-engine release:] - Add support for Cryptographic Appliance's keyserver technology. - (Use engine 'keyclient') - [Cryptographic Appliances and Geoff Thorpe] - - *) Add a configuration entry for OS/390 Unix. The C compiler 'c89' - is called via tools/c89.sh because arguments have to be - rearranged (all '-L' options must appear before the first object - modules). - [Richard Shapiro <rshapiro@abinitio.com>] - - *) [In 0.9.6c-engine release:] - Add support for Broadcom crypto accelerator cards, backported - from 0.9.7. - [Broadcom, Nalin Dahyabhai <nalin@redhat.com>, Mark Cox] - - *) [In 0.9.6c-engine release:] - Add support for SureWare crypto accelerator cards from - Baltimore Technologies. (Use engine 'sureware') - [Baltimore Technologies and Mark Cox] - - *) [In 0.9.6c-engine release:] - Add support for crypto accelerator cards from Accelerated - Encryption Processing, www.aep.ie. (Use engine 'aep') - [AEP Inc. and Mark Cox] - - *) Add a configuration entry for gcc on UnixWare. - [Gary Benson <gbenson@redhat.com>] - - *) Change ssl/s2_clnt.c and ssl/s2_srvr.c so that received handshake - messages are stored in a single piece (fixed-length part and - variable-length part combined) and fix various bugs found on the way. - [Bodo Moeller] - - *) Disable caching in BIO_gethostbyname(), directly use gethostbyname() - instead. BIO_gethostbyname() does not know what timeouts are - appropriate, so entries would stay in cache even when they have - become invalid. - [Bodo Moeller; problem pointed out by Rich Salz <rsalz@zolera.com> - - *) Change ssl23_get_client_hello (ssl/s23_srvr.c) behaviour when - faced with a pathologically small ClientHello fragment that does - not contain client_version: Instead of aborting with an error, - simply choose the highest available protocol version (i.e., - TLS 1.0 unless it is disabled). In practice, ClientHello - messages are never sent like this, but this change gives us - strictly correct behaviour at least for TLS. - [Bodo Moeller] - - *) Fix SSL handshake functions and SSL_clear() such that SSL_clear() - never resets s->method to s->ctx->method when called from within - one of the SSL handshake functions. - [Bodo Moeller; problem pointed out by Niko Baric] - - *) In ssl3_get_client_hello (ssl/s3_srvr.c), generate a fatal alert - (sent using the client's version number) if client_version is - smaller than the protocol version in use. Also change - ssl23_get_client_hello (ssl/s23_srvr.c) to select TLS 1.0 if - the client demanded SSL 3.0 but only TLS 1.0 is enabled; then - the client will at least see that alert. - [Bodo Moeller] - - *) Fix ssl3_get_message (ssl/s3_both.c) to handle message fragmentation - correctly. - [Bodo Moeller] - - *) Avoid infinite loop in ssl3_get_message (ssl/s3_both.c) if a - client receives HelloRequest while in a handshake. - [Bodo Moeller; bug noticed by Andy Schneider <andy.schneider@bjss.co.uk>] - - *) Bugfix in ssl3_accept (ssl/s3_srvr.c): Case SSL3_ST_SW_HELLO_REQ_C - should end in 'break', not 'goto end' which circumvents various - cleanups done in state SSL_ST_OK. But session related stuff - must be disabled for SSL_ST_OK in the case that we just sent a - HelloRequest. - - Also avoid some overhead by not calling ssl_init_wbio_buffer() - before just sending a HelloRequest. - [Bodo Moeller, Eric Rescorla <ekr@rtfm.com>] - - *) Fix ssl/s3_enc.c, ssl/t1_enc.c and ssl/s3_pkt.c so that we don't - reveal whether illegal block cipher padding was found or a MAC - verification error occurred. (Neither SSLerr() codes nor alerts - are directly visible to potential attackers, but the information - may leak via logfiles.) - - Similar changes are not required for the SSL 2.0 implementation - because the number of padding bytes is sent in clear for SSL 2.0, - and the extra bytes are just ignored. However ssl/s2_pkt.c - failed to verify that the purported number of padding bytes is in - the legal range. - [Bodo Moeller] - - *) Add OpenUNIX-8 support including shared libraries - (Boyd Lynn Gerber <gerberb@zenez.com>). - [Lutz Jaenicke] - - *) Improve RSA_padding_check_PKCS1_OAEP() check again to avoid - 'wristwatch attack' using huge encoding parameters (cf. - James H. Manger's CRYPTO 2001 paper). Note that the - RSA_PKCS1_OAEP_PADDING case of RSA_private_decrypt() does not use - encoding parameters and hence was not vulnerable. - [Bodo Moeller] - - *) BN_sqr() bug fix. - [Ulf Möller, reported by Jim Ellis <jim.ellis@cavium.com>] - - *) Rabin-Miller test analyses assume uniformly distributed witnesses, - so use BN_pseudo_rand_range() instead of using BN_pseudo_rand() - followed by modular reduction. - [Bodo Moeller; pointed out by Adam Young <AYoung1@NCSUS.JNJ.COM>] - - *) Add BN_pseudo_rand_range() with obvious functionality: BN_rand_range() - equivalent based on BN_pseudo_rand() instead of BN_rand(). - [Bodo Moeller] - - *) s3_srvr.c: allow sending of large client certificate lists (> 16 kB). - This function was broken, as the check for a new client hello message - to handle SGC did not allow these large messages. - (Tracked down by "Douglas E. Engert" <deengert@anl.gov>.) - [Lutz Jaenicke] - - *) Add alert descriptions for TLSv1 to SSL_alert_desc_string[_long](). - [Lutz Jaenicke] - - *) Fix buggy behaviour of BIO_get_num_renegotiates() and BIO_ctrl() - for BIO_C_GET_WRITE_BUF_SIZE ("Stephen Hinton" <shinton@netopia.com>). - [Lutz Jaenicke] - - *) Rework the configuration and shared library support for Tru64 Unix. - The configuration part makes use of modern compiler features and - still retains old compiler behavior for those that run older versions - of the OS. The shared library support part includes a variant that - uses the RPATH feature, and is available through the special - configuration target "alpha-cc-rpath", which will never be selected - automatically. - [Tim Mooney <mooney@dogbert.cc.ndsu.NoDak.edu> via Richard Levitte] - - *) In ssl3_get_key_exchange (ssl/s3_clnt.c), call ssl3_get_message() - with the same message size as in ssl3_get_certificate_request(). - Otherwise, if no ServerKeyExchange message occurs, CertificateRequest - messages might inadvertently be reject as too long. - [Petr Lampa <lampa@fee.vutbr.cz>] - - *) Enhanced support for IA-64 Unix platforms (well, Linux and HP-UX). - [Andy Polyakov] - - *) Modified SSL library such that the verify_callback that has been set - specifically for an SSL object with SSL_set_verify() is actually being - used. Before the change, a verify_callback set with this function was - ignored and the verify_callback() set in the SSL_CTX at the time of - the call was used. New function X509_STORE_CTX_set_verify_cb() introduced - to allow the necessary settings. - [Lutz Jaenicke] - - *) Initialize static variable in crypto/dsa/dsa_lib.c and crypto/dh/dh_lib.c - explicitly to NULL, as at least on Solaris 8 this seems not always to be - done automatically (in contradiction to the requirements of the C - standard). This made problems when used from OpenSSH. - [Lutz Jaenicke] - - *) In OpenSSL 0.9.6a and 0.9.6b, crypto/dh/dh_key.c ignored - dh->length and always used - - BN_rand_range(priv_key, dh->p). - - BN_rand_range() is not necessary for Diffie-Hellman, and this - specific range makes Diffie-Hellman unnecessarily inefficient if - dh->length (recommended exponent length) is much smaller than the - length of dh->p. We could use BN_rand_range() if the order of - the subgroup was stored in the DH structure, but we only have - dh->length. - - So switch back to - - BN_rand(priv_key, l, ...) - - where 'l' is dh->length if this is defined, or BN_num_bits(dh->p)-1 - otherwise. - [Bodo Moeller] - - *) In - - RSA_eay_public_encrypt - RSA_eay_private_decrypt - RSA_eay_private_encrypt (signing) - RSA_eay_public_decrypt (signature verification) - - (default implementations for RSA_public_encrypt, - RSA_private_decrypt, RSA_private_encrypt, RSA_public_decrypt), - always reject numbers >= n. - [Bodo Moeller] - - *) In crypto/rand/md_rand.c, use a new short-time lock CRYPTO_LOCK_RAND2 - to synchronize access to 'locking_thread'. This is necessary on - systems where access to 'locking_thread' (an 'unsigned long' - variable) is not atomic. - [Bodo Moeller] - - *) In crypto/rand/md_rand.c, set 'locking_thread' to current thread's ID - *before* setting the 'crypto_lock_rand' flag. The previous code had - a race condition if 0 is a valid thread ID. - [Travis Vitek <vitek@roguewave.com>] - - *) Add support for shared libraries under Irix. - [Albert Chin-A-Young <china@thewrittenword.com>] - - *) Add configuration option to build on Linux on both big-endian and - little-endian MIPS. - [Ralf Baechle <ralf@uni-koblenz.de>] - - *) Add the possibility to create shared libraries on HP-UX. - [Richard Levitte] - - Changes between 0.9.6a and 0.9.6b [9 Jul 2001] - - *) Change ssleay_rand_bytes (crypto/rand/md_rand.c) - to avoid a SSLeay/OpenSSL PRNG weakness pointed out by - Markku-Juhani O. Saarinen <markku-juhani.saarinen@nokia.com>: - PRNG state recovery was possible based on the output of - one PRNG request appropriately sized to gain knowledge on - 'md' followed by enough consecutive 1-byte PRNG requests - to traverse all of 'state'. - - 1. When updating 'md_local' (the current thread's copy of 'md') - during PRNG output generation, hash all of the previous - 'md_local' value, not just the half used for PRNG output. - - 2. Make the number of bytes from 'state' included into the hash - independent from the number of PRNG bytes requested. - - The first measure alone would be sufficient to avoid - Markku-Juhani's attack. (Actually it had never occurred - to me that the half of 'md_local' used for chaining was the - half from which PRNG output bytes were taken -- I had always - assumed that the secret half would be used.) The second - measure makes sure that additional data from 'state' is never - mixed into 'md_local' in small portions; this heuristically - further strengthens the PRNG. - [Bodo Moeller] - - *) Fix crypto/bn/asm/mips3.s. - [Andy Polyakov] - - *) When only the key is given to "enc", the IV is undefined. Print out - an error message in this case. - [Lutz Jaenicke] - - *) Handle special case when X509_NAME is empty in X509 printing routines. - [Steve Henson] - - *) In dsa_do_verify (crypto/dsa/dsa_ossl.c), verify that r and s are - positive and less than q. - [Bodo Moeller] - - *) Don't change *pointer in CRYPTO_add_lock() is add_lock_callback is - used: it isn't thread safe and the add_lock_callback should handle - that itself. - [Paul Rose <Paul.Rose@bridge.com>] - - *) Verify that incoming data obeys the block size in - ssl3_enc (ssl/s3_enc.c) and tls1_enc (ssl/t1_enc.c). - [Bodo Moeller] - - *) Fix OAEP check. - [Ulf Möller, Bodo Möller] - - *) The countermeasure against Bleichbacher's attack on PKCS #1 v1.5 - RSA encryption was accidentally removed in s3_srvr.c in OpenSSL 0.9.5 - when fixing the server behaviour for backwards-compatible 'client - hello' messages. (Note that the attack is impractical against - SSL 3.0 and TLS 1.0 anyway because length and version checking - means that the probability of guessing a valid ciphertext is - around 2^-40; see section 5 in Bleichenbacher's CRYPTO '98 - paper.) - - Before 0.9.5, the countermeasure (hide the error by generating a - random 'decryption result') did not work properly because - ERR_clear_error() was missing, meaning that SSL_get_error() would - detect the supposedly ignored error. - - Both problems are now fixed. - [Bodo Moeller] - - *) In crypto/bio/bf_buff.c, increase DEFAULT_BUFFER_SIZE to 4096 - (previously it was 1024). - [Bodo Moeller] - - *) Fix for compatibility mode trust settings: ignore trust settings - unless some valid trust or reject settings are present. - [Steve Henson] - - *) Fix for blowfish EVP: its a variable length cipher. - [Steve Henson] - - *) Fix various bugs related to DSA S/MIME verification. Handle missing - parameters in DSA public key structures and return an error in the - DSA routines if parameters are absent. - [Steve Henson] - - *) In versions up to 0.9.6, RAND_file_name() resorted to file ".rnd" - in the current directory if neither $RANDFILE nor $HOME was set. - RAND_file_name() in 0.9.6a returned NULL in this case. This has - caused some confusion to Windows users who haven't defined $HOME. - Thus RAND_file_name() is changed again: e_os.h can define a - DEFAULT_HOME, which will be used if $HOME is not set. - For Windows, we use "C:"; on other platforms, we still require - environment variables. - - *) Move 'if (!initialized) RAND_poll()' into regions protected by - CRYPTO_LOCK_RAND. This is not strictly necessary, but avoids - having multiple threads call RAND_poll() concurrently. - [Bodo Moeller] - - *) In crypto/rand/md_rand.c, replace 'add_do_not_lock' flag by a - combination of a flag and a thread ID variable. - Otherwise while one thread is in ssleay_rand_bytes (which sets the - flag), *other* threads can enter ssleay_add_bytes without obeying - the CRYPTO_LOCK_RAND lock (and may even illegally release the lock - that they do not hold after the first thread unsets add_do_not_lock). - [Bodo Moeller] - - *) Change bctest again: '-x' expressions are not available in all - versions of 'test'. - [Bodo Moeller] - - Changes between 0.9.6 and 0.9.6a [5 Apr 2001] - - *) Fix a couple of memory leaks in PKCS7_dataDecode() - [Steve Henson, reported by Heyun Zheng <hzheng@atdsprint.com>] - - *) Change Configure and Makefiles to provide EXE_EXT, which will contain - the default extension for executables, if any. Also, make the perl - scripts that use symlink() to test if it really exists and use "cp" - if it doesn't. All this made OpenSSL compilable and installable in - CygWin. - [Richard Levitte] - - *) Fix for asn1_GetSequence() for indefinite length constructed data. - If SEQUENCE is length is indefinite just set c->slen to the total - amount of data available. - [Steve Henson, reported by shige@FreeBSD.org] - [This change does not apply to 0.9.7.] - - *) Change bctest to avoid here-documents inside command substitution - (workaround for FreeBSD /bin/sh bug). - For compatibility with Ultrix, avoid shell functions (introduced - in the bctest version that searches along $PATH). - [Bodo Moeller] - - *) Rename 'des_encrypt' to 'des_encrypt1'. This avoids the clashes - with des_encrypt() defined on some operating systems, like Solaris - and UnixWare. - [Richard Levitte] - - *) Check the result of RSA-CRT (see D. Boneh, R. DeMillo, R. Lipton: - On the Importance of Eliminating Errors in Cryptographic - Computations, J. Cryptology 14 (2001) 2, 101-119, - http://theory.stanford.edu/~dabo/papers/faults.ps.gz). - [Ulf Moeller] - - *) MIPS assembler BIGNUM division bug fix. - [Andy Polyakov] - - *) Disabled incorrect Alpha assembler code. - [Richard Levitte] - - *) Fix PKCS#7 decode routines so they correctly update the length - after reading an EOC for the EXPLICIT tag. - [Steve Henson] - [This change does not apply to 0.9.7.] - - *) Fix bug in PKCS#12 key generation routines. This was triggered - if a 3DES key was generated with a 0 initial byte. Include - PKCS12_BROKEN_KEYGEN compilation option to retain the old - (but broken) behaviour. - [Steve Henson] - - *) Enhance bctest to search for a working bc along $PATH and print - it when found. - [Tim Rice <tim@multitalents.net> via Richard Levitte] - - *) Fix memory leaks in err.c: free err_data string if necessary; - don't write to the wrong index in ERR_set_error_data. - [Bodo Moeller] - - *) Implement ssl23_peek (analogous to ssl23_read), which previously - did not exist. - [Bodo Moeller] - - *) Replace rdtsc with _emit statements for VC++ version 5. - [Jeremy Cooper <jeremy@baymoo.org>] - - *) Make it possible to reuse SSLv2 sessions. - [Richard Levitte] - - *) In copy_email() check for >= 0 as a return value for - X509_NAME_get_index_by_NID() since 0 is a valid index. - [Steve Henson reported by Massimiliano Pala <madwolf@opensca.org>] - - *) Avoid coredump with unsupported or invalid public keys by checking if - X509_get_pubkey() fails in PKCS7_verify(). Fix memory leak when - PKCS7_verify() fails with non detached data. - [Steve Henson] - - *) Don't use getenv in library functions when run as setuid/setgid. - New function OPENSSL_issetugid(). - [Ulf Moeller] - - *) Avoid false positives in memory leak detection code (crypto/mem_dbg.c) - due to incorrect handling of multi-threading: - - 1. Fix timing glitch in the MemCheck_off() portion of CRYPTO_mem_ctrl(). - - 2. Fix logical glitch in is_MemCheck_on() aka CRYPTO_is_mem_check_on(). - - 3. Count how many times MemCheck_off() has been called so that - nested use can be treated correctly. This also avoids - inband-signalling in the previous code (which relied on the - assumption that thread ID 0 is impossible). - [Bodo Moeller] - - *) Add "-rand" option also to s_client and s_server. - [Lutz Jaenicke] - - *) Fix CPU detection on Irix 6.x. - [Kurt Hockenbury <khockenb@stevens-tech.edu> and - "Bruce W. Forsberg" <bruce.forsberg@baesystems.com>] - - *) Fix X509_NAME bug which produced incorrect encoding if X509_NAME - was empty. - [Steve Henson] - [This change does not apply to 0.9.7.] - - *) Use the cached encoding of an X509_NAME structure rather than - copying it. This is apparently the reason for the libsafe "errors" - but the code is actually correct. - [Steve Henson] - - *) Add new function BN_rand_range(), and fix DSA_sign_setup() to prevent - Bleichenbacher's DSA attack. - Extend BN_[pseudo_]rand: As before, top=1 forces the highest two bits - to be set and top=0 forces the highest bit to be set; top=-1 is new - and leaves the highest bit random. - [Ulf Moeller, Bodo Moeller] - - *) In the NCONF_...-based implementations for CONF_... queries - (crypto/conf/conf_lib.c), if the input LHASH is NULL, avoid using - a temporary CONF structure with the data component set to NULL - (which gives segmentation faults in lh_retrieve). - Instead, use NULL for the CONF pointer in CONF_get_string and - CONF_get_number (which may use environment variables) and directly - return NULL from CONF_get_section. - [Bodo Moeller] - - *) Fix potential buffer overrun for EBCDIC. - [Ulf Moeller] - - *) Tolerate nonRepudiation as being valid for S/MIME signing and certSign - keyUsage if basicConstraints absent for a CA. - [Steve Henson] - - *) Make SMIME_write_PKCS7() write mail header values with a format that - is more generally accepted (no spaces before the semicolon), since - some programs can't parse those values properly otherwise. Also make - sure BIO's that break lines after each write do not create invalid - headers. - [Richard Levitte] - - *) Make the CRL encoding routines work with empty SEQUENCE OF. The - macros previously used would not encode an empty SEQUENCE OF - and break the signature. - [Steve Henson] - [This change does not apply to 0.9.7.] - - *) Zero the premaster secret after deriving the master secret in - DH ciphersuites. - [Steve Henson] - - *) Add some EVP_add_digest_alias registrations (as found in - OpenSSL_add_all_digests()) to SSL_library_init() - aka OpenSSL_add_ssl_algorithms(). This provides improved - compatibility with peers using X.509 certificates - with unconventional AlgorithmIdentifier OIDs. - [Bodo Moeller] - - *) Fix for Irix with NO_ASM. - ["Bruce W. Forsberg" <bruce.forsberg@baesystems.com>] - - *) ./config script fixes. - [Ulf Moeller, Richard Levitte] - - *) Fix 'openssl passwd -1'. - [Bodo Moeller] - - *) Change PKCS12_key_gen_asc() so it can cope with non null - terminated strings whose length is passed in the passlen - parameter, for example from PEM callbacks. This was done - by adding an extra length parameter to asc2uni(). - [Steve Henson, reported by <oddissey@samsung.co.kr>] - - *) Fix C code generated by 'openssl dsaparam -C': If a BN_bin2bn - call failed, free the DSA structure. - [Bodo Moeller] - - *) Fix to uni2asc() to cope with zero length Unicode strings. - These are present in some PKCS#12 files. - [Steve Henson] - - *) Increase s2->wbuf allocation by one byte in ssl2_new (ssl/s2_lib.c). - Otherwise do_ssl_write (ssl/s2_pkt.c) will write beyond buffer limits - when writing a 32767 byte record. - [Bodo Moeller; problem reported by Eric Day <eday@concentric.net>] - - *) In RSA_eay_public_{en,ed}crypt and RSA_eay_mod_exp (rsa_eay.c), - obtain lock CRYPTO_LOCK_RSA before setting rsa->_method_mod_{n,p,q}. - - (RSA objects have a reference count access to which is protected - by CRYPTO_LOCK_RSA [see rsa_lib.c, s3_srvr.c, ssl_cert.c, ssl_rsa.c], - so they are meant to be shared between threads.) - [Bodo Moeller, Geoff Thorpe; original patch submitted by - "Reddie, Steven" <Steven.Reddie@ca.com>] - - *) Fix a deadlock in CRYPTO_mem_leaks(). - [Bodo Moeller] - - *) Use better test patterns in bntest. - [Ulf Möller] - - *) rand_win.c fix for Borland C. - [Ulf Möller] - - *) BN_rshift bugfix for n == 0. - [Bodo Moeller] - - *) Add a 'bctest' script that checks for some known 'bc' bugs - so that 'make test' does not abort just because 'bc' is broken. - [Bodo Moeller] - - *) Store verify_result within SSL_SESSION also for client side to - avoid potential security hole. (Re-used sessions on the client side - always resulted in verify_result==X509_V_OK, not using the original - result of the server certificate verification.) - [Lutz Jaenicke] - - *) Fix ssl3_pending: If the record in s->s3->rrec is not of type - SSL3_RT_APPLICATION_DATA, return 0. - Similarly, change ssl2_pending to return 0 if SSL_in_init(s) is true. - [Bodo Moeller] - - *) Fix SSL_peek: - Both ssl2_peek and ssl3_peek, which were totally broken in earlier - releases, have been re-implemented by renaming the previous - implementations of ssl2_read and ssl3_read to ssl2_read_internal - and ssl3_read_internal, respectively, and adding 'peek' parameters - to them. The new ssl[23]_{read,peek} functions are calls to - ssl[23]_read_internal with the 'peek' flag set appropriately. - A 'peek' parameter has also been added to ssl3_read_bytes, which - does the actual work for ssl3_read_internal. - [Bodo Moeller] - - *) Initialise "ex_data" member of RSA/DSA/DH structures prior to calling - the method-specific "init()" handler. Also clean up ex_data after - calling the method-specific "finish()" handler. Previously, this was - happening the other way round. - [Geoff Thorpe] - - *) Increase BN_CTX_NUM (the number of BIGNUMs in a BN_CTX) to 16. - The previous value, 12, was not always sufficient for BN_mod_exp(). - [Bodo Moeller] - - *) Make sure that shared libraries get the internal name engine with - the full version number and not just 0. This should mark the - shared libraries as not backward compatible. Of course, this should - be changed again when we can guarantee backward binary compatibility. - [Richard Levitte] - - *) Fix typo in get_cert_by_subject() in by_dir.c - [Jean-Marc Desperrier <jean-marc.desperrier@certplus.com>] - - *) Rework the system to generate shared libraries: - - - Make note of the expected extension for the shared libraries and - if there is a need for symbolic links from for example libcrypto.so.0 - to libcrypto.so.0.9.7. There is extended info in Configure for - that. - - - Make as few rebuilds of the shared libraries as possible. - - - Still avoid linking the OpenSSL programs with the shared libraries. - - - When installing, install the shared libraries separately from the - static ones. - [Richard Levitte] - - *) Fix SSL_CTX_set_read_ahead macro to actually use its argument. - - Copy SSL_CTX's read_ahead flag to SSL object directly in SSL_new - and not in SSL_clear because the latter is also used by the - accept/connect functions; previously, the settings made by - SSL_set_read_ahead would be lost during the handshake. - [Bodo Moeller; problems reported by Anders Gertz <gertz@epact.se>] - - *) Correct util/mkdef.pl to be selective about disabled algorithms. - Previously, it would create entries for disabled algorithms no - matter what. - [Richard Levitte] - - *) Added several new manual pages for SSL_* function. - [Lutz Jaenicke] - - Changes between 0.9.5a and 0.9.6 [24 Sep 2000] - - *) In ssl23_get_client_hello, generate an error message when faced - with an initial SSL 3.0/TLS record that is too small to contain the - first two bytes of the ClientHello message, i.e. client_version. - (Note that this is a pathologic case that probably has never happened - in real life.) The previous approach was to use the version number - from the record header as a substitute; but our protocol choice - should not depend on that one because it is not authenticated - by the Finished messages. - [Bodo Moeller] - - *) More robust randomness gathering functions for Windows. - [Jeffrey Altman <jaltman@columbia.edu>] - - *) For compatibility reasons if the flag X509_V_FLAG_ISSUER_CHECK is - not set then we don't setup the error code for issuer check errors - to avoid possibly overwriting other errors which the callback does - handle. If an application does set the flag then we assume it knows - what it is doing and can handle the new informational codes - appropriately. - [Steve Henson] - - *) Fix for a nasty bug in ASN1_TYPE handling. ASN1_TYPE is used for - a general "ANY" type, as such it should be able to decode anything - including tagged types. However it didn't check the class so it would - wrongly interpret tagged types in the same way as their universal - counterpart and unknown types were just rejected. Changed so that the - tagged and unknown types are handled in the same way as a SEQUENCE: - that is the encoding is stored intact. There is also a new type - "V_ASN1_OTHER" which is used when the class is not universal, in this - case we have no idea what the actual type is so we just lump them all - together. - [Steve Henson] - - *) On VMS, stdout may very well lead to a file that is written to - in a record-oriented fashion. That means that every write() will - write a separate record, which will be read separately by the - programs trying to read from it. This can be very confusing. - - The solution is to put a BIO filter in the way that will buffer - text until a linefeed is reached, and then write everything a - line at a time, so every record written will be an actual line, - not chunks of lines and not (usually doesn't happen, but I've - seen it once) several lines in one record. BIO_f_linebuffer() is - the answer. - - Currently, it's a VMS-only method, because that's where it has - been tested well enough. - [Richard Levitte] - - *) Remove 'optimized' squaring variant in BN_mod_mul_montgomery, - it can return incorrect results. - (Note: The buggy variant was not enabled in OpenSSL 0.9.5a, - but it was in 0.9.6-beta[12].) - [Bodo Moeller] - - *) Disable the check for content being present when verifying detached - signatures in pk7_smime.c. Some versions of Netscape (wrongly) - include zero length content when signing messages. - [Steve Henson] - - *) New BIO_shutdown_wr macro, which invokes the BIO_C_SHUTDOWN_WR - BIO_ctrl (for BIO pairs). - [Bodo Möller] - - *) Add DSO method for VMS. - [Richard Levitte] - - *) Bug fix: Montgomery multiplication could produce results with the - wrong sign. - [Ulf Möller] - - *) Add RPM specification openssl.spec and modify it to build three - packages. The default package contains applications, application - documentation and run-time libraries. The devel package contains - include files, static libraries and function documentation. The - doc package contains the contents of the doc directory. The original - openssl.spec was provided by Damien Miller <djm@mindrot.org>. - [Richard Levitte] - - *) Add a large number of documentation files for many SSL routines. - [Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE>] - - *) Add a configuration entry for Sony News 4. - [NAKAJI Hiroyuki <nakaji@tutrp.tut.ac.jp>] - - *) Don't set the two most significant bits to one when generating a - random number < q in the DSA library. - [Ulf Möller] - - *) New SSL API mode 'SSL_MODE_AUTO_RETRY'. This disables the default - behaviour that SSL_read may result in SSL_ERROR_WANT_READ (even if - the underlying transport is blocking) if a handshake took place. - (The default behaviour is needed by applications such as s_client - and s_server that use select() to determine when to use SSL_read; - but for applications that know in advance when to expect data, it - just makes things more complicated.) - [Bodo Moeller] - - *) Add RAND_egd_bytes(), which gives control over the number of bytes read - from EGD. - [Ben Laurie] - - *) Add a few more EBCDIC conditionals that make `req' and `x509' - work better on such systems. - [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>] - - *) Add two demo programs for PKCS12_parse() and PKCS12_create(). - Update PKCS12_parse() so it copies the friendlyName and the - keyid to the certificates aux info. - [Steve Henson] - - *) Fix bug in PKCS7_verify() which caused an infinite loop - if there was more than one signature. - [Sven Uszpelkat <su@celocom.de>] - - *) Major change in util/mkdef.pl to include extra information - about each symbol, as well as presenting variables as well - as functions. This change means that there's n more need - to rebuild the .num files when some algorithms are excluded. - [Richard Levitte] - - *) Allow the verify time to be set by an application, - rather than always using the current time. - [Steve Henson] - - *) Phase 2 verify code reorganisation. The certificate - verify code now looks up an issuer certificate by a - number of criteria: subject name, authority key id - and key usage. It also verifies self signed certificates - by the same criteria. The main comparison function is - X509_check_issued() which performs these checks. - - Lot of changes were necessary in order to support this - without completely rewriting the lookup code. - - Authority and subject key identifier are now cached. - - The LHASH 'certs' is X509_STORE has now been replaced - by a STACK_OF(X509_OBJECT). This is mainly because an - LHASH can't store or retrieve multiple objects with - the same hash value. - - As a result various functions (which were all internal - use only) have changed to handle the new X509_STORE - structure. This will break anything that messed round - with X509_STORE internally. - - The functions X509_STORE_add_cert() now checks for an - exact match, rather than just subject name. - - The X509_STORE API doesn't directly support the retrieval - of multiple certificates matching a given criteria, however - this can be worked round by performing a lookup first - (which will fill the cache with candidate certificates) - and then examining the cache for matches. This is probably - the best we can do without throwing out X509_LOOKUP - entirely (maybe later...). - - The X509_VERIFY_CTX structure has been enhanced considerably. - - All certificate lookup operations now go via a get_issuer() - callback. Although this currently uses an X509_STORE it - can be replaced by custom lookups. This is a simple way - to bypass the X509_STORE hackery necessary to make this - work and makes it possible to use more efficient techniques - in future. A very simple version which uses a simple - STACK for its trusted certificate store is also provided - using X509_STORE_CTX_trusted_stack(). - - The verify_cb() and verify() callbacks now have equivalents - in the X509_STORE_CTX structure. - - X509_STORE_CTX also has a 'flags' field which can be used - to customise the verify behaviour. - [Steve Henson] - - *) Add new PKCS#7 signing option PKCS7_NOSMIMECAP which - excludes S/MIME capabilities. - [Steve Henson] - - *) When a certificate request is read in keep a copy of the - original encoding of the signed data and use it when outputting - again. Signatures then use the original encoding rather than - a decoded, encoded version which may cause problems if the - request is improperly encoded. - [Steve Henson] - - *) For consistency with other BIO_puts implementations, call - buffer_write(b, ...) directly in buffer_puts instead of calling - BIO_write(b, ...). - - In BIO_puts, increment b->num_write as in BIO_write. - [Peter.Sylvester@EdelWeb.fr] - - *) Fix BN_mul_word for the case where the word is 0. (We have to use - BN_zero, we may not return a BIGNUM with an array consisting of - words set to zero.) - [Bodo Moeller] - - *) Avoid calling abort() from within the library when problems are - detected, except if preprocessor symbols have been defined - (such as REF_CHECK, BN_DEBUG etc.). - [Bodo Moeller] - - *) New openssl application 'rsautl'. This utility can be - used for low level RSA operations. DER public key - BIO/fp routines also added. - [Steve Henson] - - *) New Configure entry and patches for compiling on QNX 4. - [Andreas Schneider <andreas@ds3.etech.fh-hamburg.de>] - - *) A demo state-machine implementation was sponsored by - Nuron (http://www.nuron.com/) and is now available in - demos/state_machine. - [Ben Laurie] - - *) New options added to the 'dgst' utility for signature - generation and verification. - [Steve Henson] - - *) Unrecognized PKCS#7 content types are now handled via a - catch all ASN1_TYPE structure. This allows unsupported - types to be stored as a "blob" and an application can - encode and decode it manually. - [Steve Henson] - - *) Fix various signed/unsigned issues to make a_strex.c - compile under VC++. - [Oscar Jacobsson <oscar.jacobsson@celocom.com>] - - *) ASN1 fixes. i2d_ASN1_OBJECT was not returning the correct - length if passed a buffer. ASN1_INTEGER_to_BN failed - if passed a NULL BN and its argument was negative. - [Steve Henson, pointed out by Sven Heiberg <sven@tartu.cyber.ee>] - - *) Modification to PKCS#7 encoding routines to output definite - length encoding. Since currently the whole structures are in - memory there's not real point in using indefinite length - constructed encoding. However if OpenSSL is compiled with - the flag PKCS7_INDEFINITE_ENCODING the old form is used. - [Steve Henson] - - *) Added BIO_vprintf() and BIO_vsnprintf(). - [Richard Levitte] - - *) Added more prefixes to parse for in the strings written - through a logging bio, to cover all the levels that are available - through syslog. The prefixes are now: - - PANIC, EMERG, EMR => LOG_EMERG - ALERT, ALR => LOG_ALERT - CRIT, CRI => LOG_CRIT - ERROR, ERR => LOG_ERR - WARNING, WARN, WAR => LOG_WARNING - NOTICE, NOTE, NOT => LOG_NOTICE - INFO, INF => LOG_INFO - DEBUG, DBG => LOG_DEBUG - - and as before, if none of those prefixes are present at the - beginning of the string, LOG_ERR is chosen. - - On Win32, the LOG_* levels are mapped according to this: - - LOG_EMERG, LOG_ALERT, LOG_CRIT, LOG_ERR => EVENTLOG_ERROR_TYPE - LOG_WARNING => EVENTLOG_WARNING_TYPE - LOG_NOTICE, LOG_INFO, LOG_DEBUG => EVENTLOG_INFORMATION_TYPE - - [Richard Levitte] - - *) Made it possible to reconfigure with just the configuration - argument "reconf" or "reconfigure". The command line arguments - are stored in Makefile.ssl in the variable CONFIGURE_ARGS, - and are retrieved from there when reconfiguring. - [Richard Levitte] - - *) MD4 implemented. - [Assar Westerlund <assar@sics.se>, Richard Levitte] - - *) Add the arguments -CAfile and -CApath to the pkcs12 utility. - [Richard Levitte] - - *) The obj_dat.pl script was messing up the sorting of object - names. The reason was that it compared the quoted version - of strings as a result "OCSP" > "OCSP Signing" because - " > SPACE. Changed script to store unquoted versions of - names and add quotes on output. It was also omitting some - names from the lookup table if they were given a default - value (that is if SN is missing it is given the same - value as LN and vice versa), these are now added on the - grounds that if an object has a name we should be able to - look it up. Finally added warning output when duplicate - short or long names are found. - [Steve Henson] - - *) Changes needed for Tandem NSK. - [Scott Uroff <scott@xypro.com>] - - *) Fix SSL 2.0 rollback checking: Due to an off-by-one error in - RSA_padding_check_SSLv23(), special padding was never detected - and thus the SSL 3.0/TLS 1.0 countermeasure against protocol - version rollback attacks was not effective. - - In s23_clnt.c, don't use special rollback-attack detection padding - (RSA_SSLV23_PADDING) if SSL 2.0 is the only protocol enabled in the - client; similarly, in s23_srvr.c, don't do the rollback check if - SSL 2.0 is the only protocol enabled in the server. - [Bodo Moeller] - - *) Make it possible to get hexdumps of unprintable data with 'openssl - asn1parse'. By implication, the functions ASN1_parse_dump() and - BIO_dump_indent() are added. - [Richard Levitte] - - *) New functions ASN1_STRING_print_ex() and X509_NAME_print_ex() - these print out strings and name structures based on various - flags including RFC2253 support and proper handling of - multibyte characters. Added options to the 'x509' utility - to allow the various flags to be set. - [Steve Henson] - - *) Various fixes to use ASN1_TIME instead of ASN1_UTCTIME. - Also change the functions X509_cmp_current_time() and - X509_gmtime_adj() work with an ASN1_TIME structure, - this will enable certificates using GeneralizedTime in validity - dates to be checked. - [Steve Henson] - - *) Make the NEG_PUBKEY_BUG code (which tolerates invalid - negative public key encodings) on by default, - NO_NEG_PUBKEY_BUG can be set to disable it. - [Steve Henson] - - *) New function c2i_ASN1_OBJECT() which acts on ASN1_OBJECT - content octets. An i2c_ASN1_OBJECT is unnecessary because - the encoding can be trivially obtained from the structure. - [Steve Henson] - - *) crypto/err.c locking bugfix: Use write locks (CRYPTO_w_[un]lock), - not read locks (CRYPTO_r_[un]lock). - [Bodo Moeller] - - *) A first attempt at creating official support for shared - libraries through configuration. I've kept it so the - default is static libraries only, and the OpenSSL programs - are always statically linked for now, but there are - preparations for dynamic linking in place. - This has been tested on Linux and Tru64. - [Richard Levitte] - - *) Randomness polling function for Win9x, as described in: - Peter Gutmann, Software Generation of Practically Strong - Random Numbers. - [Ulf Möller] - - *) Fix so PRNG is seeded in req if using an already existing - DSA key. - [Steve Henson] - - *) New options to smime application. -inform and -outform - allow alternative formats for the S/MIME message including - PEM and DER. The -content option allows the content to be - specified separately. This should allow things like Netscape - form signing output easier to verify. - [Steve Henson] - - *) Fix the ASN1 encoding of tags using the 'long form'. - [Steve Henson] - - *) New ASN1 functions, i2c_* and c2i_* for INTEGER and BIT - STRING types. These convert content octets to and from the - underlying type. The actual tag and length octets are - already assumed to have been read in and checked. These - are needed because all other string types have virtually - identical handling apart from the tag. By having versions - of the ASN1 functions that just operate on content octets - IMPLICIT tagging can be handled properly. It also allows - the ASN1_ENUMERATED code to be cut down because ASN1_ENUMERATED - and ASN1_INTEGER are identical apart from the tag. - [Steve Henson] - - *) Change the handling of OID objects as follows: - - - New object identifiers are inserted in objects.txt, following - the syntax given in objects.README. - - objects.pl is used to process obj_mac.num and create a new - obj_mac.h. - - obj_dat.pl is used to create a new obj_dat.h, using the data in - obj_mac.h. - - This is currently kind of a hack, and the perl code in objects.pl - isn't very elegant, but it works as I intended. The simplest way - to check that it worked correctly is to look in obj_dat.h and - check the array nid_objs and make sure the objects haven't moved - around (this is important!). Additions are OK, as well as - consistent name changes. - [Richard Levitte] - - *) Add BSD-style MD5-based passwords to 'openssl passwd' (option '-1'). - [Bodo Moeller] - - *) Addition of the command line parameter '-rand file' to 'openssl req'. - The given file adds to whatever has already been seeded into the - random pool through the RANDFILE configuration file option or - environment variable, or the default random state file. - [Richard Levitte] - - *) mkstack.pl now sorts each macro group into lexical order. - Previously the output order depended on the order the files - appeared in the directory, resulting in needless rewriting - of safestack.h . - [Steve Henson] - - *) Patches to make OpenSSL compile under Win32 again. Mostly - work arounds for the VC++ problem that it treats func() as - func(void). Also stripped out the parts of mkdef.pl that - added extra typesafe functions: these no longer exist. - [Steve Henson] - - *) Reorganisation of the stack code. The macros are now all - collected in safestack.h . Each macro is defined in terms of - a "stack macro" of the form SKM_<name>(type, a, b). The - DEBUG_SAFESTACK is now handled in terms of function casts, - this has the advantage of retaining type safety without the - use of additional functions. If DEBUG_SAFESTACK is not defined - then the non typesafe macros are used instead. Also modified the - mkstack.pl script to handle the new form. Needs testing to see - if which (if any) compilers it chokes and maybe make DEBUG_SAFESTACK - the default if no major problems. Similar behaviour for ASN1_SET_OF - and PKCS12_STACK_OF. - [Steve Henson] - - *) When some versions of IIS use the 'NET' form of private key the - key derivation algorithm is different. Normally MD5(password) is - used as a 128 bit RC4 key. In the modified case - MD5(MD5(password) + "SGCKEYSALT") is used instead. Added some - new functions i2d_RSA_NET(), d2i_RSA_NET() etc which are the same - as the old Netscape_RSA functions except they have an additional - 'sgckey' parameter which uses the modified algorithm. Also added - an -sgckey command line option to the rsa utility. Thanks to - Adrian Peck <bertie@ncipher.com> for posting details of the modified - algorithm to openssl-dev. - [Steve Henson] - - *) The evp_local.h macros were using 'c.##kname' which resulted in - invalid expansion on some systems (SCO 5.0.5 for example). - Corrected to 'c.kname'. - [Phillip Porch <root@theporch.com>] - - *) New X509_get1_email() and X509_REQ_get1_email() functions that return - a STACK of email addresses from a certificate or request, these look - in the subject name and the subject alternative name extensions and - omit any duplicate addresses. - [Steve Henson] - - *) Re-implement BN_mod_exp2_mont using independent (and larger) windows. - This makes DSA verification about 2 % faster. - [Bodo Moeller] - - *) Increase maximum window size in BN_mod_exp_... to 6 bits instead of 5 - (meaning that now 2^5 values will be precomputed, which is only 4 KB - plus overhead for 1024 bit moduli). - This makes exponentiations about 0.5 % faster for 1024 bit - exponents (as measured by "openssl speed rsa2048"). - [Bodo Moeller] - - *) Rename memory handling macros to avoid conflicts with other - software: - Malloc => OPENSSL_malloc - Malloc_locked => OPENSSL_malloc_locked - Realloc => OPENSSL_realloc - Free => OPENSSL_free - [Richard Levitte] - - *) New function BN_mod_exp_mont_word for small bases (roughly 15% - faster than BN_mod_exp_mont, i.e. 7% for a full DH exchange). - [Bodo Moeller] - - *) CygWin32 support. - [John Jarvie <jjarvie@newsguy.com>] - - *) The type-safe stack code has been rejigged. It is now only compiled - in when OpenSSL is configured with the DEBUG_SAFESTACK option and - by default all type-specific stack functions are "#define"d back to - standard stack functions. This results in more streamlined output - but retains the type-safety checking possibilities of the original - approach. - [Geoff Thorpe] - - *) The STACK code has been cleaned up, and certain type declarations - that didn't make a lot of sense have been brought in line. This has - also involved a cleanup of sorts in safestack.h to more correctly - map type-safe stack functions onto their plain stack counterparts. - This work has also resulted in a variety of "const"ifications of - lots of the code, especially "_cmp" operations which should normally - be prototyped with "const" parameters anyway. - [Geoff Thorpe] - - *) When generating bytes for the first time in md_rand.c, 'stir the pool' - by seeding with STATE_SIZE dummy bytes (with zero entropy count). - (The PRNG state consists of two parts, the large pool 'state' and 'md', - where all of 'md' is used each time the PRNG is used, but 'state' - is used only indexed by a cyclic counter. As entropy may not be - well distributed from the beginning, 'md' is important as a - chaining variable. However, the output function chains only half - of 'md', i.e. 80 bits. ssleay_rand_add, on the other hand, chains - all of 'md', and seeding with STATE_SIZE dummy bytes will result - in all of 'state' being rewritten, with the new values depending - on virtually all of 'md'. This overcomes the 80 bit limitation.) - [Bodo Moeller] - - *) In ssl/s2_clnt.c and ssl/s3_clnt.c, call ERR_clear_error() when - the handshake is continued after ssl_verify_cert_chain(); - otherwise, if SSL_VERIFY_NONE is set, remaining error codes - can lead to 'unexplainable' connection aborts later. - [Bodo Moeller; problem tracked down by Lutz Jaenicke] - - *) Major EVP API cipher revision. - Add hooks for extra EVP features. This allows various cipher - parameters to be set in the EVP interface. Support added for variable - key length ciphers via the EVP_CIPHER_CTX_set_key_length() function and - setting of RC2 and RC5 parameters. - - Modify EVP_OpenInit() and EVP_SealInit() to cope with variable key length - ciphers. - - Remove lots of duplicated code from the EVP library. For example *every* - cipher init() function handles the 'iv' in the same way according to the - cipher mode. They also all do nothing if the 'key' parameter is NULL and - for CFB and OFB modes they zero ctx->num. - - New functionality allows removal of S/MIME code RC2 hack. - - Most of the routines have the same form and so can be declared in terms - of macros. - - By shifting this to the top level EVP_CipherInit() it can be removed from - all individual ciphers. If the cipher wants to handle IVs or keys - differently it can set the EVP_CIPH_CUSTOM_IV or EVP_CIPH_ALWAYS_CALL_INIT - flags. - - Change lots of functions like EVP_EncryptUpdate() to now return a - value: although software versions of the algorithms cannot fail - any installed hardware versions can. - [Steve Henson] - - *) Implement SSL_OP_TLS_ROLLBACK_BUG: In ssl3_get_client_key_exchange, if - this option is set, tolerate broken clients that send the negotiated - protocol version number instead of the requested protocol version - number. - [Bodo Moeller] - - *) Call dh_tmp_cb (set by ..._TMP_DH_CB) with correct 'is_export' flag; - i.e. non-zero for export ciphersuites, zero otherwise. - Previous versions had this flag inverted, inconsistent with - rsa_tmp_cb (..._TMP_RSA_CB). - [Bodo Moeller; problem reported by Amit Chopra] - - *) Add missing DSA library text string. Work around for some IIS - key files with invalid SEQUENCE encoding. - [Steve Henson] - - *) Add a document (doc/standards.txt) that list all kinds of standards - and so on that are implemented in OpenSSL. - [Richard Levitte] - - *) Enhance c_rehash script. Old version would mishandle certificates - with the same subject name hash and wouldn't handle CRLs at all. - Added -fingerprint option to crl utility, to support new c_rehash - features. - [Steve Henson] - - *) Eliminate non-ANSI declarations in crypto.h and stack.h. - [Ulf Möller] - - *) Fix for SSL server purpose checking. Server checking was - rejecting certificates which had extended key usage present - but no ssl client purpose. - [Steve Henson, reported by Rene Grosser <grosser@hisolutions.com>] - - *) Make PKCS#12 code work with no password. The PKCS#12 spec - is a little unclear about how a blank password is handled. - Since the password in encoded as a BMPString with terminating - double NULL a zero length password would end up as just the - double NULL. However no password at all is different and is - handled differently in the PKCS#12 key generation code. NS - treats a blank password as zero length. MSIE treats it as no - password on export: but it will try both on import. We now do - the same: PKCS12_parse() tries zero length and no password if - the password is set to "" or NULL (NULL is now a valid password: - it wasn't before) as does the pkcs12 application. - [Steve Henson] - - *) Bugfixes in apps/x509.c: Avoid a memory leak; and don't use - perror when PEM_read_bio_X509_REQ fails, the error message must - be obtained from the error queue. - [Bodo Moeller] - - *) Avoid 'thread_hash' memory leak in crypto/err/err.c by freeing - it in ERR_remove_state if appropriate, and change ERR_get_state - accordingly to avoid race conditions (this is necessary because - thread_hash is no longer constant once set). - [Bodo Moeller] - - *) Bugfix for linux-elf makefile.one. - [Ulf Möller] - - *) RSA_get_default_method() will now cause a default - RSA_METHOD to be chosen if one doesn't exist already. - Previously this was only set during a call to RSA_new() - or RSA_new_method(NULL) meaning it was possible for - RSA_get_default_method() to return NULL. - [Geoff Thorpe] - - *) Added native name translation to the existing DSO code - that will convert (if the flag to do so is set) filenames - that are sufficiently small and have no path information - into a canonical native form. Eg. "blah" converted to - "libblah.so" or "blah.dll" etc. - [Geoff Thorpe] - - *) New function ERR_error_string_n(e, buf, len) which is like - ERR_error_string(e, buf), but writes at most 'len' bytes - including the 0 terminator. For ERR_error_string_n, 'buf' - may not be NULL. - [Damien Miller <djm@mindrot.org>, Bodo Moeller] - - *) CONF library reworked to become more general. A new CONF - configuration file reader "class" is implemented as well as a - new functions (NCONF_*, for "New CONF") to handle it. The now - old CONF_* functions are still there, but are reimplemented to - work in terms of the new functions. Also, a set of functions - to handle the internal storage of the configuration data is - provided to make it easier to write new configuration file - reader "classes" (I can definitely see something reading a - configuration file in XML format, for example), called _CONF_*, - or "the configuration storage API"... - - The new configuration file reading functions are: - - NCONF_new, NCONF_free, NCONF_load, NCONF_load_fp, NCONF_load_bio, - NCONF_get_section, NCONF_get_string, NCONF_get_numbre - - NCONF_default, NCONF_WIN32 - - NCONF_dump_fp, NCONF_dump_bio - - NCONF_default and NCONF_WIN32 are method (or "class") choosers, - NCONF_new creates a new CONF object. This works in the same way - as other interfaces in OpenSSL, like the BIO interface. - NCONF_dump_* dump the internal storage of the configuration file, - which is useful for debugging. All other functions take the same - arguments as the old CONF_* functions with the exception of the - first that must be a `CONF *' instead of a `LHASH *'. - - To make it easier to use the new classes with the old CONF_* functions, - the function CONF_set_default_method is provided. - [Richard Levitte] - - *) Add '-tls1' option to 'openssl ciphers', which was already - mentioned in the documentation but had not been implemented. - (This option is not yet really useful because even the additional - experimental TLS 1.0 ciphers are currently treated as SSL 3.0 ciphers.) - [Bodo Moeller] - - *) Initial DSO code added into libcrypto for letting OpenSSL (and - OpenSSL-based applications) load shared libraries and bind to - them in a portable way. - [Geoff Thorpe, with contributions from Richard Levitte] - - Changes between 0.9.5 and 0.9.5a [1 Apr 2000] - - *) Make sure _lrotl and _lrotr are only used with MSVC. - - *) Use lock CRYPTO_LOCK_RAND correctly in ssleay_rand_status - (the default implementation of RAND_status). - - *) Rename openssl x509 option '-crlext', which was added in 0.9.5, - to '-clrext' (= clear extensions), as intended and documented. - [Bodo Moeller; inconsistency pointed out by Michael Attili - <attili@amaxo.com>] - - *) Fix for HMAC. It wasn't zeroing the rest of the block if the key length - was larger than the MD block size. - [Steve Henson, pointed out by Yost William <YostW@tce.com>] - - *) Modernise PKCS12_parse() so it uses STACK_OF(X509) for its ca argument - fix a leak when the ca argument was passed as NULL. Stop X509_PUBKEY_set() - using the passed key: if the passed key was a private key the result - of X509_print(), for example, would be to print out all the private key - components. - [Steve Henson] - - *) des_quad_cksum() byte order bug fix. - [Ulf Möller, using the problem description in krb4-0.9.7, where - the solution is attributed to Derrick J Brashear <shadow@DEMENTIA.ORG>] - - *) Fix so V_ASN1_APP_CHOOSE works again: however its use is strongly - discouraged. - [Steve Henson, pointed out by Brian Korver <briank@cs.stanford.edu>] - - *) For easily testing in shell scripts whether some command - 'openssl XXX' exists, the new pseudo-command 'openssl no-XXX' - returns with exit code 0 iff no command of the given name is available. - 'no-XXX' is printed in this case, 'XXX' otherwise. In both cases, - the output goes to stdout and nothing is printed to stderr. - Additional arguments are always ignored. - - Since for each cipher there is a command of the same name, - the 'no-cipher' compilation switches can be tested this way. - - ('openssl no-XXX' is not able to detect pseudo-commands such - as 'quit', 'list-XXX-commands', or 'no-XXX' itself.) - [Bodo Moeller] - - *) Update test suite so that 'make test' succeeds in 'no-rsa' configuration. - [Bodo Moeller] - - *) For SSL_[CTX_]set_tmp_dh, don't create a DH key if SSL_OP_SINGLE_DH_USE - is set; it will be thrown away anyway because each handshake creates - its own key. - ssl_cert_dup, which is used by SSL_new, now copies DH keys in addition - to parameters -- in previous versions (since OpenSSL 0.9.3) the - 'default key' from SSL_CTX_set_tmp_dh would always be lost, meaning - you effectively got SSL_OP_SINGLE_DH_USE when using this macro. - [Bodo Moeller] - - *) New s_client option -ign_eof: EOF at stdin is ignored, and - 'Q' and 'R' lose their special meanings (quit/renegotiate). - This is part of what -quiet does; unlike -quiet, -ign_eof - does not suppress any output. - [Richard Levitte] - - *) Add compatibility options to the purpose and trust code. The - purpose X509_PURPOSE_ANY is "any purpose" which automatically - accepts a certificate or CA, this was the previous behaviour, - with all the associated security issues. - - X509_TRUST_COMPAT is the old trust behaviour: only and - automatically trust self signed roots in certificate store. A - new trust setting X509_TRUST_DEFAULT is used to specify that - a purpose has no associated trust setting and it should instead - use the value in the default purpose. - [Steve Henson] - - *) Fix the PKCS#8 DSA private key code so it decodes keys again - and fix a memory leak. - [Steve Henson] - - *) In util/mkerr.pl (which implements 'make errors'), preserve - reason strings from the previous version of the .c file, as - the default to have only downcase letters (and digits) in - automatically generated reasons codes is not always appropriate. - [Bodo Moeller] - - *) In ERR_load_ERR_strings(), build an ERR_LIB_SYS error reason table - using strerror. Previously, ERR_reason_error_string() returned - library names as reason strings for SYSerr; but SYSerr is a special - case where small numbers are errno values, not library numbers. - [Bodo Moeller] - - *) Add '-dsaparam' option to 'openssl dhparam' application. This - converts DSA parameters into DH parameters. (When creating parameters, - DSA_generate_parameters is used.) - [Bodo Moeller] - - *) Include 'length' (recommended exponent length) in C code generated - by 'openssl dhparam -C'. - [Bodo Moeller] - - *) The second argument to set_label in perlasm was already being used - so couldn't be used as a "file scope" flag. Moved to third argument - which was free. - [Steve Henson] - - *) In PEM_ASN1_write_bio and some other functions, use RAND_pseudo_bytes - instead of RAND_bytes for encryption IVs and salts. - [Bodo Moeller] - - *) Include RAND_status() into RAND_METHOD instead of implementing - it only for md_rand.c Otherwise replacing the PRNG by calling - RAND_set_rand_method would be impossible. - [Bodo Moeller] - - *) Don't let DSA_generate_key() enter an infinite loop if the random - number generation fails. - [Bodo Moeller] - - *) New 'rand' application for creating pseudo-random output. - [Bodo Moeller] - - *) Added configuration support for Linux/IA64 - [Rolf Haberrecker <rolf@suse.de>] - - *) Assembler module support for Mingw32. - [Ulf Möller] - - *) Shared library support for HPUX (in shlib/). - [Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE> and Anonymous] - - *) Shared library support for Solaris gcc. - [Lutz Behnke <behnke@trustcenter.de>] - - Changes between 0.9.4 and 0.9.5 [28 Feb 2000] - - *) PKCS7_encrypt() was adding text MIME headers twice because they - were added manually and by SMIME_crlf_copy(). - [Steve Henson] - - *) In bntest.c don't call BN_rand with zero bits argument. - [Steve Henson, pointed out by Andrew W. Gray <agray@iconsinc.com>] - - *) BN_mul bugfix: In bn_mul_part_recursion() only the a>a[n] && b>b[n] - case was implemented. This caused BN_div_recp() to fail occasionally. - [Ulf Möller] - - *) Add an optional second argument to the set_label() in the perl - assembly language builder. If this argument exists and is set - to 1 it signals that the assembler should use a symbol whose - scope is the entire file, not just the current function. This - is needed with MASM which uses the format label:: for this scope. - [Steve Henson, pointed out by Peter Runestig <peter@runestig.com>] - - *) Change the ASN1 types so they are typedefs by default. Before - almost all types were #define'd to ASN1_STRING which was causing - STACK_OF() problems: you couldn't declare STACK_OF(ASN1_UTF8STRING) - for example. - [Steve Henson] - - *) Change names of new functions to the new get1/get0 naming - convention: After 'get1', the caller owns a reference count - and has to call ..._free; 'get0' returns a pointer to some - data structure without incrementing reference counters. - (Some of the existing 'get' functions increment a reference - counter, some don't.) - Similarly, 'set1' and 'add1' functions increase reference - counters or duplicate objects. - [Steve Henson] - - *) Allow for the possibility of temp RSA key generation failure: - the code used to assume it always worked and crashed on failure. - [Steve Henson] - - *) Fix potential buffer overrun problem in BIO_printf(). - [Ulf Möller, using public domain code by Patrick Powell; problem - pointed out by David Sacerdote <das33@cornell.edu>] - - *) Support EGD <http://www.lothar.com/tech/crypto/>. New functions - RAND_egd() and RAND_status(). In the command line application, - the EGD socket can be specified like a seed file using RANDFILE - or -rand. - [Ulf Möller] - - *) Allow the string CERTIFICATE to be tolerated in PKCS#7 structures. - Some CAs (e.g. Verisign) distribute certificates in this form. - [Steve Henson] - - *) Remove the SSL_ALLOW_ADH compile option and set the default cipher - list to exclude them. This means that no special compilation option - is needed to use anonymous DH: it just needs to be included in the - cipher list. - [Steve Henson] - - *) Change the EVP_MD_CTX_type macro so its meaning consistent with - EVP_MD_type. The old functionality is available in a new macro called - EVP_MD_md(). Change code that uses it and update docs. - [Steve Henson] - - *) ..._ctrl functions now have corresponding ..._callback_ctrl functions - where the 'void *' argument is replaced by a function pointer argument. - Previously 'void *' was abused to point to functions, which works on - many platforms, but is not correct. As these functions are usually - called by macros defined in OpenSSL header files, most source code - should work without changes. - [Richard Levitte] - - *) <openssl/opensslconf.h> (which is created by Configure) now contains - sections with information on -D... compiler switches used for - compiling the library so that applications can see them. To enable - one of these sections, a pre-processor symbol OPENSSL_..._DEFINES - must be defined. E.g., - #define OPENSSL_ALGORITHM_DEFINES - #include <openssl/opensslconf.h> - defines all pertinent NO_<algo> symbols, such as NO_IDEA, NO_RSA, etc. - [Richard Levitte, Ulf and Bodo Möller] - - *) Bugfix: Tolerate fragmentation and interleaving in the SSL 3/TLS - record layer. - [Bodo Moeller] - - *) Change the 'other' type in certificate aux info to a STACK_OF - X509_ALGOR. Although not an AlgorithmIdentifier as such it has - the required ASN1 format: arbitrary types determined by an OID. - [Steve Henson] - - *) Add some PEM_write_X509_REQ_NEW() functions and a command line - argument to 'req'. This is not because the function is newer or - better than others it just uses the work 'NEW' in the certificate - request header lines. Some software needs this. - [Steve Henson] - - *) Reorganise password command line arguments: now passwords can be - obtained from various sources. Delete the PEM_cb function and make - it the default behaviour: i.e. if the callback is NULL and the - usrdata argument is not NULL interpret it as a null terminated pass - phrase. If usrdata and the callback are NULL then the pass phrase - is prompted for as usual. - [Steve Henson] - - *) Add support for the Compaq Atalla crypto accelerator. If it is installed, - the support is automatically enabled. The resulting binaries will - autodetect the card and use it if present. - [Ben Laurie and Compaq Inc.] - - *) Work around for Netscape hang bug. This sends certificate request - and server done in one record. Since this is perfectly legal in the - SSL/TLS protocol it isn't a "bug" option and is on by default. See - the bugs/SSLv3 entry for more info. - [Steve Henson] - - *) HP-UX tune-up: new unified configs, HP C compiler bug workaround. - [Andy Polyakov] - - *) Add -rand argument to smime and pkcs12 applications and read/write - of seed file. - [Steve Henson] - - *) New 'passwd' tool for crypt(3) and apr1 password hashes. - [Bodo Moeller] - - *) Add command line password options to the remaining applications. - [Steve Henson] - - *) Bug fix for BN_div_recp() for numerators with an even number of - bits. - [Ulf Möller] - - *) More tests in bntest.c, and changed test_bn output. - [Ulf Möller] - - *) ./config recognizes MacOS X now. - [Andy Polyakov] - - *) Bug fix for BN_div() when the first words of num and divisor are - equal (it gave wrong results if (rem=(n1-q*d0)&BN_MASK2) < d0). - [Ulf Möller] - - *) Add support for various broken PKCS#8 formats, and command line - options to produce them. - [Steve Henson] - - *) New functions BN_CTX_start(), BN_CTX_get() and BT_CTX_end() to - get temporary BIGNUMs from a BN_CTX. - [Ulf Möller] - - *) Correct return values in BN_mod_exp_mont() and BN_mod_exp2_mont() - for p == 0. - [Ulf Möller] - - *) Change the SSLeay_add_all_*() functions to OpenSSL_add_all_*() and - include a #define from the old name to the new. The original intent - was that statically linked binaries could for example just call - SSLeay_add_all_ciphers() to just add ciphers to the table and not - link with digests. This never worked because SSLeay_add_all_digests() - and SSLeay_add_all_ciphers() were in the same source file so calling - one would link with the other. They are now in separate source files. - [Steve Henson] - - *) Add a new -notext option to 'ca' and a -pubkey option to 'spkac'. - [Steve Henson] - - *) Use a less unusual form of the Miller-Rabin primality test (it used - a binary algorithm for exponentiation integrated into the Miller-Rabin - loop, our standard modexp algorithms are faster). - [Bodo Moeller] - - *) Support for the EBCDIC character set completed. - [Martin Kraemer <Martin.Kraemer@Mch.SNI.De>] - - *) Source code cleanups: use const where appropriate, eliminate casts, - use void * instead of char * in lhash. - [Ulf Möller] - - *) Bugfix: ssl3_send_server_key_exchange was not restartable - (the state was not changed to SSL3_ST_SW_KEY_EXCH_B, and because of - this the server could overwrite ephemeral keys that the client - has already seen). - [Bodo Moeller] - - *) Turn DSA_is_prime into a macro that calls BN_is_prime, - using 50 iterations of the Rabin-Miller test. - - DSA_generate_parameters now uses BN_is_prime_fasttest (with 50 - iterations of the Rabin-Miller test as required by the appendix - to FIPS PUB 186[-1]) instead of DSA_is_prime. - As BN_is_prime_fasttest includes trial division, DSA parameter - generation becomes much faster. - - This implies a change for the callback functions in DSA_is_prime - and DSA_generate_parameters: The callback function is called once - for each positive witness in the Rabin-Miller test, not just - occasionally in the inner loop; and the parameters to the - callback function now provide an iteration count for the outer - loop rather than for the current invocation of the inner loop. - DSA_generate_parameters additionally can call the callback - function with an 'iteration count' of -1, meaning that a - candidate has passed the trial division test (when q is generated - from an application-provided seed, trial division is skipped). - [Bodo Moeller] - - *) New function BN_is_prime_fasttest that optionally does trial - division before starting the Rabin-Miller test and has - an additional BN_CTX * argument (whereas BN_is_prime always - has to allocate at least one BN_CTX). - 'callback(1, -1, cb_arg)' is called when a number has passed the - trial division stage. - [Bodo Moeller] - - *) Fix for bug in CRL encoding. The validity dates weren't being handled - as ASN1_TIME. - [Steve Henson] - - *) New -pkcs12 option to CA.pl script to write out a PKCS#12 file. - [Steve Henson] - - *) New function BN_pseudo_rand(). - [Ulf Möller] - - *) Clean up BN_mod_mul_montgomery(): replace the broken (and unreadable) - bignum version of BN_from_montgomery() with the working code from - SSLeay 0.9.0 (the word based version is faster anyway), and clean up - the comments. - [Ulf Möller] - - *) Avoid a race condition in s2_clnt.c (function get_server_hello) that - made it impossible to use the same SSL_SESSION data structure in - SSL2 clients in multiple threads. - [Bodo Moeller] - - *) The return value of RAND_load_file() no longer counts bytes obtained - by stat(). RAND_load_file(..., -1) is new and uses the complete file - to seed the PRNG (previously an explicit byte count was required). - [Ulf Möller, Bodo Möller] - - *) Clean up CRYPTO_EX_DATA functions, some of these didn't have prototypes - used (char *) instead of (void *) and had casts all over the place. - [Steve Henson] - - *) Make BN_generate_prime() return NULL on error if ret!=NULL. - [Ulf Möller] - - *) Retain source code compatibility for BN_prime_checks macro: - BN_is_prime(..., BN_prime_checks, ...) now uses - BN_prime_checks_for_size to determine the appropriate number of - Rabin-Miller iterations. - [Ulf Möller] - - *) Diffie-Hellman uses "safe" primes: DH_check() return code renamed to - DH_CHECK_P_NOT_SAFE_PRIME. - (Check if this is true? OpenPGP calls them "strong".) - [Ulf Möller] - - *) Merge the functionality of "dh" and "gendh" programs into a new program - "dhparam". The old programs are retained for now but will handle DH keys - (instead of parameters) in future. - [Steve Henson] - - *) Make the ciphers, s_server and s_client programs check the return values - when a new cipher list is set. - [Steve Henson] - - *) Enhance the SSL/TLS cipher mechanism to correctly handle the TLS 56bit - ciphers. Before when the 56bit ciphers were enabled the sorting was - wrong. - - The syntax for the cipher sorting has been extended to support sorting by - cipher-strength (using the strength_bits hard coded in the tables). - The new command is "@STRENGTH" (see also doc/apps/ciphers.pod). - - Fix a bug in the cipher-command parser: when supplying a cipher command - string with an "undefined" symbol (neither command nor alphanumeric - [A-Za-z0-9], ssl_set_cipher_list used to hang in an endless loop. Now - an error is flagged. - - Due to the strength-sorting extension, the code of the - ssl_create_cipher_list() function was completely rearranged. I hope that - the readability was also increased :-) - [Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE>] - - *) Minor change to 'x509' utility. The -CAcreateserial option now uses 1 - for the first serial number and places 2 in the serial number file. This - avoids problems when the root CA is created with serial number zero and - the first user certificate has the same issuer name and serial number - as the root CA. - [Steve Henson] - - *) Fixes to X509_ATTRIBUTE utilities, change the 'req' program so it uses - the new code. Add documentation for this stuff. - [Steve Henson] - - *) Changes to X509_ATTRIBUTE utilities. These have been renamed from - X509_*() to X509at_*() on the grounds that they don't handle X509 - structures and behave in an analogous way to the X509v3 functions: - they shouldn't be called directly but wrapper functions should be used - instead. - - So we also now have some wrapper functions that call the X509at functions - when passed certificate requests. (TO DO: similar things can be done with - PKCS#7 signed and unsigned attributes, PKCS#12 attributes and a few other - things. Some of these need some d2i or i2d and print functionality - because they handle more complex structures.) - [Steve Henson] - - *) Add missing #ifndefs that caused missing symbols when building libssl - as a shared library without RSA. Use #ifndef NO_SSL2 instead of - NO_RSA in ssl/s2*.c. - [Kris Kennaway <kris@hub.freebsd.org>, modified by Ulf Möller] - - *) Precautions against using the PRNG uninitialized: RAND_bytes() now - has a return value which indicates the quality of the random data - (1 = ok, 0 = not seeded). Also an error is recorded on the thread's - error queue. New function RAND_pseudo_bytes() generates output that is - guaranteed to be unique but not unpredictable. RAND_add is like - RAND_seed, but takes an extra argument for an entropy estimate - (RAND_seed always assumes full entropy). - [Ulf Möller] - - *) Do more iterations of Rabin-Miller probable prime test (specifically, - 3 for 1024-bit primes, 6 for 512-bit primes, 12 for 256-bit primes - instead of only 2 for all lengths; see BN_prime_checks_for_size definition - in crypto/bn/bn_prime.c for the complete table). This guarantees a - false-positive rate of at most 2^-80 for random input. - [Bodo Moeller] - - *) Rewrite ssl3_read_n (ssl/s3_pkt.c) avoiding a couple of bugs. - [Bodo Moeller] - - *) New function X509_CTX_rget_chain() (renamed to X509_CTX_get1_chain - in the 0.9.5 release), this returns the chain - from an X509_CTX structure with a dup of the stack and all - the X509 reference counts upped: so the stack will exist - after X509_CTX_cleanup() has been called. Modify pkcs12.c - to use this. - - Also make SSL_SESSION_print() print out the verify return - code. - [Steve Henson] - - *) Add manpage for the pkcs12 command. Also change the default - behaviour so MAC iteration counts are used unless the new - -nomaciter option is used. This improves file security and - only older versions of MSIE (4.0 for example) need it. - [Steve Henson] - - *) Honor the no-xxx Configure options when creating .DEF files. - [Ulf Möller] - - *) Add PKCS#10 attributes to field table: challengePassword, - unstructuredName and unstructuredAddress. These are taken from - draft PKCS#9 v2.0 but are compatible with v1.2 provided no - international characters are used. - - More changes to X509_ATTRIBUTE code: allow the setting of types - based on strings. Remove the 'loc' parameter when adding - attributes because these will be a SET OF encoding which is sorted - in ASN1 order. - [Steve Henson] - - *) Initial changes to the 'req' utility to allow request generation - automation. This will allow an application to just generate a template - file containing all the field values and have req construct the - request. - - Initial support for X509_ATTRIBUTE handling. Stacks of these are - used all over the place including certificate requests and PKCS#7 - structures. They are currently handled manually where necessary with - some primitive wrappers for PKCS#7. The new functions behave in a - manner analogous to the X509 extension functions: they allow - attributes to be looked up by NID and added. - - Later something similar to the X509V3 code would be desirable to - automatically handle the encoding, decoding and printing of the - more complex types. The string types like challengePassword can - be handled by the string table functions. - - Also modified the multi byte string table handling. Now there is - a 'global mask' which masks out certain types. The table itself - can use the flag STABLE_NO_MASK to ignore the mask setting: this - is useful when for example there is only one permissible type - (as in countryName) and using the mask might result in no valid - types at all. - [Steve Henson] - - *) Clean up 'Finished' handling, and add functions SSL_get_finished and - SSL_get_peer_finished to allow applications to obtain the latest - Finished messages sent to the peer or expected from the peer, - respectively. (SSL_get_peer_finished is usually the Finished message - actually received from the peer, otherwise the protocol will be aborted.) - - As the Finished message are message digests of the complete handshake - (with a total of 192 bits for TLS 1.0 and more for SSL 3.0), they can - be used for external authentication procedures when the authentication - provided by SSL/TLS is not desired or is not enough. - [Bodo Moeller] - - *) Enhanced support for Alpha Linux is added. Now ./config checks if - the host supports BWX extension and if Compaq C is present on the - $PATH. Just exploiting of the BWX extension results in 20-30% - performance kick for some algorithms, e.g. DES and RC4 to mention - a couple. Compaq C in turn generates ~20% faster code for MD5 and - SHA1. - [Andy Polyakov] - - *) Add support for MS "fast SGC". This is arguably a violation of the - SSL3/TLS protocol. Netscape SGC does two handshakes: the first with - weak crypto and after checking the certificate is SGC a second one - with strong crypto. MS SGC stops the first handshake after receiving - the server certificate message and sends a second client hello. Since - a server will typically do all the time consuming operations before - expecting any further messages from the client (server key exchange - is the most expensive) there is little difference between the two. - - To get OpenSSL to support MS SGC we have to permit a second client - hello message after we have sent server done. In addition we have to - reset the MAC if we do get this second client hello. - [Steve Henson] - - *) Add a function 'd2i_AutoPrivateKey()' this will automatically decide - if a DER encoded private key is RSA or DSA traditional format. Changed - d2i_PrivateKey_bio() to use it. This is only needed for the "traditional" - format DER encoded private key. Newer code should use PKCS#8 format which - has the key type encoded in the ASN1 structure. Added DER private key - support to pkcs8 application. - [Steve Henson] - - *) SSL 3/TLS 1 servers now don't request certificates when an anonymous - ciphersuites has been selected (as required by the SSL 3/TLS 1 - specifications). Exception: When SSL_VERIFY_FAIL_IF_NO_PEER_CERT - is set, we interpret this as a request to violate the specification - (the worst that can happen is a handshake failure, and 'correct' - behaviour would result in a handshake failure anyway). - [Bodo Moeller] - - *) In SSL_CTX_add_session, take into account that there might be multiple - SSL_SESSION structures with the same session ID (e.g. when two threads - concurrently obtain them from an external cache). - The internal cache can handle only one SSL_SESSION with a given ID, - so if there's a conflict, we now throw out the old one to achieve - consistency. - [Bodo Moeller] - - *) Add OIDs for idea and blowfish in CBC mode. This will allow both - to be used in PKCS#5 v2.0 and S/MIME. Also add checking to - some routines that use cipher OIDs: some ciphers do not have OIDs - defined and so they cannot be used for S/MIME and PKCS#5 v2.0 for - example. - [Steve Henson] - - *) Simplify the trust setting structure and code. Now we just have - two sequences of OIDs for trusted and rejected settings. These will - typically have values the same as the extended key usage extension - and any application specific purposes. - - The trust checking code now has a default behaviour: it will just - check for an object with the same NID as the passed id. Functions can - be provided to override either the default behaviour or the behaviour - for a given id. SSL client, server and email already have functions - in place for compatibility: they check the NID and also return "trusted" - if the certificate is self signed. - [Steve Henson] - - *) Add d2i,i2d bio/fp functions for PrivateKey: these convert the - traditional format into an EVP_PKEY structure. - [Steve Henson] - - *) Add a password callback function PEM_cb() which either prompts for - a password if usr_data is NULL or otherwise assumes it is a null - terminated password. Allow passwords to be passed on command line - environment or config files in a few more utilities. - [Steve Henson] - - *) Add a bunch of DER and PEM functions to handle PKCS#8 format private - keys. Add some short names for PKCS#8 PBE algorithms and allow them - to be specified on the command line for the pkcs8 and pkcs12 utilities. - Update documentation. - [Steve Henson] - - *) Support for ASN1 "NULL" type. This could be handled before by using - ASN1_TYPE but there wasn't any function that would try to read a NULL - and produce an error if it couldn't. For compatibility we also have - ASN1_NULL_new() and ASN1_NULL_free() functions but these are faked and - don't allocate anything because they don't need to. - [Steve Henson] - - *) Initial support for MacOS is now provided. Examine INSTALL.MacOS - for details. - [Andy Polyakov, Roy Woods <roy@centicsystems.ca>] - - *) Rebuild of the memory allocation routines used by OpenSSL code and - possibly others as well. The purpose is to make an interface that - provide hooks so anyone can build a separate set of allocation and - deallocation routines to be used by OpenSSL, for example memory - pool implementations, or something else, which was previously hard - since Malloc(), Realloc() and Free() were defined as macros having - the values malloc, realloc and free, respectively (except for Win32 - compilations). The same is provided for memory debugging code. - OpenSSL already comes with functionality to find memory leaks, but - this gives people a chance to debug other memory problems. - - With these changes, a new set of functions and macros have appeared: - - CRYPTO_set_mem_debug_functions() [F] - CRYPTO_get_mem_debug_functions() [F] - CRYPTO_dbg_set_options() [F] - CRYPTO_dbg_get_options() [F] - CRYPTO_malloc_debug_init() [M] - - The memory debug functions are NULL by default, unless the library - is compiled with CRYPTO_MDEBUG or friends is defined. If someone - wants to debug memory anyway, CRYPTO_malloc_debug_init() (which - gives the standard debugging functions that come with OpenSSL) or - CRYPTO_set_mem_debug_functions() (tells OpenSSL to use functions - provided by the library user) must be used. When the standard - debugging functions are used, CRYPTO_dbg_set_options can be used to - request additional information: - CRYPTO_dbg_set_options(V_CYRPTO_MDEBUG_xxx) corresponds to setting - the CRYPTO_MDEBUG_xxx macro when compiling the library. - - Also, things like CRYPTO_set_mem_functions will always give the - expected result (the new set of functions is used for allocation - and deallocation) at all times, regardless of platform and compiler - options. - - To finish it up, some functions that were never use in any other - way than through macros have a new API and new semantic: - - CRYPTO_dbg_malloc() - CRYPTO_dbg_realloc() - CRYPTO_dbg_free() - - All macros of value have retained their old syntax. - [Richard Levitte and Bodo Moeller] - - *) Some S/MIME fixes. The OID for SMIMECapabilities was wrong, the - ordering of SMIMECapabilities wasn't in "strength order" and there - was a missing NULL in the AlgorithmIdentifier for the SHA1 signature - algorithm. - [Steve Henson] - - *) Some ASN1 types with illegal zero length encoding (INTEGER, - ENUMERATED and OBJECT IDENTIFIER) choked the ASN1 routines. - [Frans Heymans <fheymans@isaserver.be>, modified by Steve Henson] - - *) Merge in my S/MIME library for OpenSSL. This provides a simple - S/MIME API on top of the PKCS#7 code, a MIME parser (with enough - functionality to handle multipart/signed properly) and a utility - called 'smime' to call all this stuff. This is based on code I - originally wrote for Celo who have kindly allowed it to be - included in OpenSSL. - [Steve Henson] - - *) Add variants des_set_key_checked and des_set_key_unchecked of - des_set_key (aka des_key_sched). Global variable des_check_key - decides which of these is called by des_set_key; this way - des_check_key behaves as it always did, but applications and - the library itself, which was buggy for des_check_key == 1, - have a cleaner way to pick the version they need. - [Bodo Moeller] - - *) New function PKCS12_newpass() which changes the password of a - PKCS12 structure. - [Steve Henson] - - *) Modify X509_TRUST and X509_PURPOSE so it also uses a static and - dynamic mix. In both cases the ids can be used as an index into the - table. Also modified the X509_TRUST_add() and X509_PURPOSE_add() - functions so they accept a list of the field values and the - application doesn't need to directly manipulate the X509_TRUST - structure. - [Steve Henson] - - *) Modify the ASN1_STRING_TABLE stuff so it also uses bsearch and doesn't - need initialising. - [Steve Henson] - - *) Modify the way the V3 extension code looks up extensions. This now - works in a similar way to the object code: we have some "standard" - extensions in a static table which is searched with OBJ_bsearch() - and the application can add dynamic ones if needed. The file - crypto/x509v3/ext_dat.h now has the info: this file needs to be - updated whenever a new extension is added to the core code and kept - in ext_nid order. There is a simple program 'tabtest.c' which checks - this. New extensions are not added too often so this file can readily - be maintained manually. - - There are two big advantages in doing things this way. The extensions - can be looked up immediately and no longer need to be "added" using - X509V3_add_standard_extensions(): this function now does nothing. - [Side note: I get *lots* of email saying the extension code doesn't - work because people forget to call this function] - Also no dynamic allocation is done unless new extensions are added: - so if we don't add custom extensions there is no need to call - X509V3_EXT_cleanup(). - [Steve Henson] - - *) Modify enc utility's salting as follows: make salting the default. Add a - magic header, so unsalted files fail gracefully instead of just decrypting - to garbage. This is because not salting is a big security hole, so people - should be discouraged from doing it. - [Ben Laurie] - - *) Fixes and enhancements to the 'x509' utility. It allowed a message - digest to be passed on the command line but it only used this - parameter when signing a certificate. Modified so all relevant - operations are affected by the digest parameter including the - -fingerprint and -x509toreq options. Also -x509toreq choked if a - DSA key was used because it didn't fix the digest. - [Steve Henson] - - *) Initial certificate chain verify code. Currently tests the untrusted - certificates for consistency with the verify purpose (which is set - when the X509_STORE_CTX structure is set up) and checks the pathlength. - - There is a NO_CHAIN_VERIFY compilation option to keep the old behaviour: - this is because it will reject chains with invalid extensions whereas - every previous version of OpenSSL and SSLeay made no checks at all. - - Trust code: checks the root CA for the relevant trust settings. Trust - settings have an initial value consistent with the verify purpose: e.g. - if the verify purpose is for SSL client use it expects the CA to be - trusted for SSL client use. However the default value can be changed to - permit custom trust settings: one example of this would be to only trust - certificates from a specific "secure" set of CAs. - - Also added X509_STORE_CTX_new() and X509_STORE_CTX_free() functions - which should be used for version portability: especially since the - verify structure is likely to change more often now. - - SSL integration. Add purpose and trust to SSL_CTX and SSL and functions - to set them. If not set then assume SSL clients will verify SSL servers - and vice versa. - - Two new options to the verify program: -untrusted allows a set of - untrusted certificates to be passed in and -purpose which sets the - intended purpose of the certificate. If a purpose is set then the - new chain verify code is used to check extension consistency. - [Steve Henson] - - *) Support for the authority information access extension. - [Steve Henson] - - *) Modify RSA and DSA PEM read routines to transparently handle - PKCS#8 format private keys. New *_PUBKEY_* functions that handle - public keys in a format compatible with certificate - SubjectPublicKeyInfo structures. Unfortunately there were already - functions called *_PublicKey_* which used various odd formats so - these are retained for compatibility: however the DSA variants were - never in a public release so they have been deleted. Changed dsa/rsa - utilities to handle the new format: note no releases ever handled public - keys so we should be OK. - - The primary motivation for this change is to avoid the same fiasco - that dogs private keys: there are several incompatible private key - formats some of which are standard and some OpenSSL specific and - require various evil hacks to allow partial transparent handling and - even then it doesn't work with DER formats. Given the option anything - other than PKCS#8 should be dumped: but the other formats have to - stay in the name of compatibility. - - With public keys and the benefit of hindsight one standard format - is used which works with EVP_PKEY, RSA or DSA structures: though - it clearly returns an error if you try to read the wrong kind of key. - - Added a -pubkey option to the 'x509' utility to output the public key. - Also rename the EVP_PKEY_get_*() to EVP_PKEY_rget_*() - (renamed to EVP_PKEY_get1_*() in the OpenSSL 0.9.5 release) and add - EVP_PKEY_rset_*() functions (renamed to EVP_PKEY_set1_*()) - that do the same as the EVP_PKEY_assign_*() except they up the - reference count of the added key (they don't "swallow" the - supplied key). - [Steve Henson] - - *) Fixes to crypto/x509/by_file.c the code to read in certificates and - CRLs would fail if the file contained no certificates or no CRLs: - added a new function to read in both types and return the number - read: this means that if none are read it will be an error. The - DER versions of the certificate and CRL reader would always fail - because it isn't possible to mix certificates and CRLs in DER format - without choking one or the other routine. Changed this to just read - a certificate: this is the best we can do. Also modified the code - in apps/verify.c to take notice of return codes: it was previously - attempting to read in certificates from NULL pointers and ignoring - any errors: this is one reason why the cert and CRL reader seemed - to work. It doesn't check return codes from the default certificate - routines: these may well fail if the certificates aren't installed. - [Steve Henson] - - *) Code to support otherName option in GeneralName. - [Steve Henson] - - *) First update to verify code. Change the verify utility - so it warns if it is passed a self signed certificate: - for consistency with the normal behaviour. X509_verify - has been modified to it will now verify a self signed - certificate if *exactly* the same certificate appears - in the store: it was previously impossible to trust a - single self signed certificate. This means that: - openssl verify ss.pem - now gives a warning about a self signed certificate but - openssl verify -CAfile ss.pem ss.pem - is OK. - [Steve Henson] - - *) For servers, store verify_result in SSL_SESSION data structure - (and add it to external session representation). - This is needed when client certificate verifications fails, - but an application-provided verification callback (set by - SSL_CTX_set_cert_verify_callback) allows accepting the session - anyway (i.e. leaves x509_store_ctx->error != X509_V_OK - but returns 1): When the session is reused, we have to set - ssl->verify_result to the appropriate error code to avoid - security holes. - [Bodo Moeller, problem pointed out by Lutz Jaenicke] - - *) Fix a bug in the new PKCS#7 code: it didn't consider the - case in PKCS7_dataInit() where the signed PKCS7 structure - didn't contain any existing data because it was being created. - [Po-Cheng Chen <pocheng@nst.com.tw>, slightly modified by Steve Henson] - - *) Add a salt to the key derivation routines in enc.c. This - forms the first 8 bytes of the encrypted file. Also add a - -S option to allow a salt to be input on the command line. - [Steve Henson] - - *) New function X509_cmp(). Oddly enough there wasn't a function - to compare two certificates. We do this by working out the SHA1 - hash and comparing that. X509_cmp() will be needed by the trust - code. - [Steve Henson] - - *) SSL_get1_session() is like SSL_get_session(), but increments - the reference count in the SSL_SESSION returned. - [Geoff Thorpe <geoff@eu.c2.net>] - - *) Fix for 'req': it was adding a null to request attributes. - Also change the X509_LOOKUP and X509_INFO code to handle - certificate auxiliary information. - [Steve Henson] - - *) Add support for 40 and 64 bit RC2 and RC4 algorithms: document - the 'enc' command. - [Steve Henson] - - *) Add the possibility to add extra information to the memory leak - detecting output, to form tracebacks, showing from where each - allocation was originated: CRYPTO_push_info("constant string") adds - the string plus current file name and line number to a per-thread - stack, CRYPTO_pop_info() does the obvious, CRYPTO_remove_all_info() - is like calling CYRPTO_pop_info() until the stack is empty. - Also updated memory leak detection code to be multi-thread-safe. - [Richard Levitte] - - *) Add options -text and -noout to pkcs7 utility and delete the - encryption options which never did anything. Update docs. - [Steve Henson] - - *) Add options to some of the utilities to allow the pass phrase - to be included on either the command line (not recommended on - OSes like Unix) or read from the environment. Update the - manpages and fix a few bugs. - [Steve Henson] - - *) Add a few manpages for some of the openssl commands. - [Steve Henson] - - *) Fix the -revoke option in ca. It was freeing up memory twice, - leaking and not finding already revoked certificates. - [Steve Henson] - - *) Extensive changes to support certificate auxiliary information. - This involves the use of X509_CERT_AUX structure and X509_AUX - functions. An X509_AUX function such as PEM_read_X509_AUX() - can still read in a certificate file in the usual way but it - will also read in any additional "auxiliary information". By - doing things this way a fair degree of compatibility can be - retained: existing certificates can have this information added - using the new 'x509' options. - - Current auxiliary information includes an "alias" and some trust - settings. The trust settings will ultimately be used in enhanced - certificate chain verification routines: currently a certificate - can only be trusted if it is self signed and then it is trusted - for all purposes. - [Steve Henson] - - *) Fix assembler for Alpha (tested only on DEC OSF not Linux or *BSD). - The problem was that one of the replacement routines had not been working - since SSLeay releases. For now the offending routine has been replaced - with non-optimised assembler. Even so, this now gives around 95% - performance improvement for 1024 bit RSA signs. - [Mark Cox] - - *) Hack to fix PKCS#7 decryption when used with some unorthodox RC2 - handling. Most clients have the effective key size in bits equal to - the key length in bits: so a 40 bit RC2 key uses a 40 bit (5 byte) key. - A few however don't do this and instead use the size of the decrypted key - to determine the RC2 key length and the AlgorithmIdentifier to determine - the effective key length. In this case the effective key length can still - be 40 bits but the key length can be 168 bits for example. This is fixed - by manually forcing an RC2 key into the EVP_PKEY structure because the - EVP code can't currently handle unusual RC2 key sizes: it always assumes - the key length and effective key length are equal. - [Steve Henson] - - *) Add a bunch of functions that should simplify the creation of - X509_NAME structures. Now you should be able to do: - X509_NAME_add_entry_by_txt(nm, "CN", MBSTRING_ASC, "Steve", -1, -1, 0); - and have it automatically work out the correct field type and fill in - the structures. The more adventurous can try: - X509_NAME_add_entry_by_txt(nm, field, MBSTRING_UTF8, str, -1, -1, 0); - and it will (hopefully) work out the correct multibyte encoding. - [Steve Henson] - - *) Change the 'req' utility to use the new field handling and multibyte - copy routines. Before the DN field creation was handled in an ad hoc - way in req, ca, and x509 which was rather broken and didn't support - BMPStrings or UTF8Strings. Since some software doesn't implement - BMPStrings or UTF8Strings yet, they can be enabled using the config file - using the dirstring_type option. See the new comment in the default - openssl.cnf for more info. - [Steve Henson] - - *) Make crypto/rand/md_rand.c more robust: - - Assure unique random numbers after fork(). - - Make sure that concurrent threads access the global counter and - md serializably so that we never lose entropy in them - or use exactly the same state in multiple threads. - Access to the large state is not always serializable because - the additional locking could be a performance killer, and - md should be large enough anyway. - [Bodo Moeller] - - *) New file apps/app_rand.c with commonly needed functionality - for handling the random seed file. - - Use the random seed file in some applications that previously did not: - ca, - dsaparam -genkey (which also ignored its '-rand' option), - s_client, - s_server, - x509 (when signing). - Except on systems with /dev/urandom, it is crucial to have a random - seed file at least for key creation, DSA signing, and for DH exchanges; - for RSA signatures we could do without one. - - gendh and gendsa (unlike genrsa) used to read only the first byte - of each file listed in the '-rand' option. The function as previously - found in genrsa is now in app_rand.c and is used by all programs - that support '-rand'. - [Bodo Moeller] - - *) In RAND_write_file, use mode 0600 for creating files; - don't just chmod when it may be too late. - [Bodo Moeller] - - *) Report an error from X509_STORE_load_locations - when X509_LOOKUP_load_file or X509_LOOKUP_add_dir failed. - [Bill Perry] - - *) New function ASN1_mbstring_copy() this copies a string in either - ASCII, Unicode, Universal (4 bytes per character) or UTF8 format - into an ASN1_STRING type. A mask of permissible types is passed - and it chooses the "minimal" type to use or an error if not type - is suitable. - [Steve Henson] - - *) Add function equivalents to the various macros in asn1.h. The old - macros are retained with an M_ prefix. Code inside the library can - use the M_ macros. External code (including the openssl utility) - should *NOT* in order to be "shared library friendly". - [Steve Henson] - - *) Add various functions that can check a certificate's extensions - to see if it usable for various purposes such as SSL client, - server or S/MIME and CAs of these types. This is currently - VERY EXPERIMENTAL but will ultimately be used for certificate chain - verification. Also added a -purpose flag to x509 utility to - print out all the purposes. - [Steve Henson] - - *) Add a CRYPTO_EX_DATA to X509 certificate structure and associated - functions. - [Steve Henson] - - *) New X509V3_{X509,CRL,REVOKED}_get_d2i() functions. These will search - for, obtain and decode and extension and obtain its critical flag. - This allows all the necessary extension code to be handled in a - single function call. - [Steve Henson] - - *) RC4 tune-up featuring 30-40% performance improvement on most RISC - platforms. See crypto/rc4/rc4_enc.c for further details. - [Andy Polyakov] - - *) New -noout option to asn1parse. This causes no output to be produced - its main use is when combined with -strparse and -out to extract data - from a file (which may not be in ASN.1 format). - [Steve Henson] - - *) Fix for pkcs12 program. It was hashing an invalid certificate pointer - when producing the local key id. - [Richard Levitte <levitte@stacken.kth.se>] - - *) New option -dhparam in s_server. This allows a DH parameter file to be - stated explicitly. If it is not stated then it tries the first server - certificate file. The previous behaviour hard coded the filename - "server.pem". - [Steve Henson] - - *) Add -pubin and -pubout options to the rsa and dsa commands. These allow - a public key to be input or output. For example: - openssl rsa -in key.pem -pubout -out pubkey.pem - Also added necessary DSA public key functions to handle this. - [Steve Henson] - - *) Fix so PKCS7_dataVerify() doesn't crash if no certificates are contained - in the message. This was handled by allowing - X509_find_by_issuer_and_serial() to tolerate a NULL passed to it. - [Steve Henson, reported by Sampo Kellomaki <sampo@mail.neuronio.pt>] - - *) Fix for bug in d2i_ASN1_bytes(): other ASN1 functions add an extra null - to the end of the strings whereas this didn't. This would cause problems - if strings read with d2i_ASN1_bytes() were later modified. - [Steve Henson, reported by Arne Ansper <arne@ats.cyber.ee>] - - *) Fix for base64 decode bug. When a base64 bio reads only one line of - data and it contains EOF it will end up returning an error. This is - caused by input 46 bytes long. The cause is due to the way base64 - BIOs find the start of base64 encoded data. They do this by trying a - trial decode on each line until they find one that works. When they - do a flag is set and it starts again knowing it can pass all the - data directly through the decoder. Unfortunately it doesn't reset - the context it uses. This means that if EOF is reached an attempt - is made to pass two EOFs through the context and this causes the - resulting error. This can also cause other problems as well. As is - usual with these problems it takes *ages* to find and the fix is - trivial: move one line. - [Steve Henson, reported by ian@uns.ns.ac.yu (Ivan Nejgebauer) ] - - *) Ugly workaround to get s_client and s_server working under Windows. The - old code wouldn't work because it needed to select() on sockets and the - tty (for keypresses and to see if data could be written). Win32 only - supports select() on sockets so we select() with a 1s timeout on the - sockets and then see if any characters are waiting to be read, if none - are present then we retry, we also assume we can always write data to - the tty. This isn't nice because the code then blocks until we've - received a complete line of data and it is effectively polling the - keyboard at 1s intervals: however it's quite a bit better than not - working at all :-) A dedicated Windows application might handle this - with an event loop for example. - [Steve Henson] - - *) Enhance RSA_METHOD structure. Now there are two extra methods, rsa_sign - and rsa_verify. When the RSA_FLAGS_SIGN_VER option is set these functions - will be called when RSA_sign() and RSA_verify() are used. This is useful - if rsa_pub_dec() and rsa_priv_enc() equivalents are not available. - For this to work properly RSA_public_decrypt() and RSA_private_encrypt() - should *not* be used: RSA_sign() and RSA_verify() must be used instead. - This necessitated the support of an extra signature type NID_md5_sha1 - for SSL signatures and modifications to the SSL library to use it instead - of calling RSA_public_decrypt() and RSA_private_encrypt(). - [Steve Henson] - - *) Add new -verify -CAfile and -CApath options to the crl program, these - will lookup a CRL issuers certificate and verify the signature in a - similar way to the verify program. Tidy up the crl program so it - no longer accesses structures directly. Make the ASN1 CRL parsing a bit - less strict. It will now permit CRL extensions even if it is not - a V2 CRL: this will allow it to tolerate some broken CRLs. - [Steve Henson] - - *) Initialize all non-automatic variables each time one of the openssl - sub-programs is started (this is necessary as they may be started - multiple times from the "OpenSSL>" prompt). - [Lennart Bang, Bodo Moeller] - - *) Preliminary compilation option RSA_NULL which disables RSA crypto without - removing all other RSA functionality (this is what NO_RSA does). This - is so (for example) those in the US can disable those operations covered - by the RSA patent while allowing storage and parsing of RSA keys and RSA - key generation. - [Steve Henson] - - *) Non-copying interface to BIO pairs. - (still largely untested) - [Bodo Moeller] - - *) New function ANS1_tag2str() to convert an ASN1 tag to a descriptive - ASCII string. This was handled independently in various places before. - [Steve Henson] - - *) New functions UTF8_getc() and UTF8_putc() that parse and generate - UTF8 strings a character at a time. - [Steve Henson] - - *) Use client_version from client hello to select the protocol - (s23_srvr.c) and for RSA client key exchange verification - (s3_srvr.c), as required by the SSL 3.0/TLS 1.0 specifications. - [Bodo Moeller] - - *) Add various utility functions to handle SPKACs, these were previously - handled by poking round in the structure internals. Added new function - NETSCAPE_SPKI_print() to print out SPKAC and a new utility 'spkac' to - print, verify and generate SPKACs. Based on an original idea from - Massimiliano Pala <madwolf@comune.modena.it> but extensively modified. - [Steve Henson] - - *) RIPEMD160 is operational on all platforms and is back in 'make test'. - [Andy Polyakov] - - *) Allow the config file extension section to be overwritten on the - command line. Based on an original idea from Massimiliano Pala - <madwolf@comune.modena.it>. The new option is called -extensions - and can be applied to ca, req and x509. Also -reqexts to override - the request extensions in req and -crlexts to override the crl extensions - in ca. - [Steve Henson] - - *) Add new feature to the SPKAC handling in ca. Now you can include - the same field multiple times by preceding it by "XXXX." for example: - 1.OU="Unit name 1" - 2.OU="Unit name 2" - this is the same syntax as used in the req config file. - [Steve Henson] - - *) Allow certificate extensions to be added to certificate requests. These - are specified in a 'req_extensions' option of the req section of the - config file. They can be printed out with the -text option to req but - are otherwise ignored at present. - [Steve Henson] - - *) Fix a horrible bug in enc_read() in crypto/evp/bio_enc.c: if the first - data read consists of only the final block it would not decrypted because - EVP_CipherUpdate() would correctly report zero bytes had been decrypted. - A misplaced 'break' also meant the decrypted final block might not be - copied until the next read. - [Steve Henson] - - *) Initial support for DH_METHOD. Again based on RSA_METHOD. Also added - a few extra parameters to the DH structure: these will be useful if - for example we want the value of 'q' or implement X9.42 DH. - [Steve Henson] - - *) Initial support for DSA_METHOD. This is based on the RSA_METHOD and - provides hooks that allow the default DSA functions or functions on a - "per key" basis to be replaced. This allows hardware acceleration and - hardware key storage to be handled without major modification to the - library. Also added low level modexp hooks and CRYPTO_EX structure and - associated functions. - [Steve Henson] - - *) Add a new flag to memory BIOs, BIO_FLAG_MEM_RDONLY. This marks the BIO - as "read only": it can't be written to and the buffer it points to will - not be freed. Reading from a read only BIO is much more efficient than - a normal memory BIO. This was added because there are several times when - an area of memory needs to be read from a BIO. The previous method was - to create a memory BIO and write the data to it, this results in two - copies of the data and an O(n^2) reading algorithm. There is a new - function BIO_new_mem_buf() which creates a read only memory BIO from - an area of memory. Also modified the PKCS#7 routines to use read only - memory BIOs. - [Steve Henson] - - *) Bugfix: ssl23_get_client_hello did not work properly when called in - state SSL23_ST_SR_CLNT_HELLO_B, i.e. when the first 7 bytes of - a SSLv2-compatible client hello for SSLv3 or TLSv1 could be read, - but a retry condition occurred while trying to read the rest. - [Bodo Moeller] - - *) The PKCS7_ENC_CONTENT_new() function was setting the content type as - NID_pkcs7_encrypted by default: this was wrong since this should almost - always be NID_pkcs7_data. Also modified the PKCS7_set_type() to handle - the encrypted data type: this is a more sensible place to put it and it - allows the PKCS#12 code to be tidied up that duplicated this - functionality. - [Steve Henson] - - *) Changed obj_dat.pl script so it takes its input and output files on - the command line. This should avoid shell escape redirection problems - under Win32. - [Steve Henson] - - *) Initial support for certificate extension requests, these are included - in things like Xenroll certificate requests. Included functions to allow - extensions to be obtained and added. - [Steve Henson] - - *) -crlf option to s_client and s_server for sending newlines as - CRLF (as required by many protocols). - [Bodo Moeller] - - Changes between 0.9.3a and 0.9.4 [09 Aug 1999] - - *) Install libRSAglue.a when OpenSSL is built with RSAref. - [Ralf S. Engelschall] - - *) A few more ``#ifndef NO_FP_API / #endif'' pairs for consistency. - [Andrija Antonijevic <TheAntony2@bigfoot.com>] - - *) Fix -startdate and -enddate (which was missing) arguments to 'ca' - program. - [Steve Henson] - - *) New function DSA_dup_DH, which duplicates DSA parameters/keys as - DH parameters/keys (q is lost during that conversion, but the resulting - DH parameters contain its length). - - For 1024-bit p, DSA_generate_parameters followed by DSA_dup_DH is - much faster than DH_generate_parameters (which creates parameters - where p = 2*q + 1), and also the smaller q makes DH computations - much more efficient (160-bit exponentiation instead of 1024-bit - exponentiation); so this provides a convenient way to support DHE - ciphersuites in SSL/TLS servers (see ssl/ssltest.c). It is of - utter importance to use - SSL_CTX_set_options(s_ctx, SSL_OP_SINGLE_DH_USE); - or - SSL_set_options(s_ctx, SSL_OP_SINGLE_DH_USE); - when such DH parameters are used, because otherwise small subgroup - attacks may become possible! - [Bodo Moeller] - - *) Avoid memory leak in i2d_DHparams. - [Bodo Moeller] - - *) Allow the -k option to be used more than once in the enc program: - this allows the same encrypted message to be read by multiple recipients. - [Steve Henson] - - *) New function OBJ_obj2txt(buf, buf_len, a, no_name), this converts - an ASN1_OBJECT to a text string. If the "no_name" parameter is set then - it will always use the numerical form of the OID, even if it has a short - or long name. - [Steve Henson] - - *) Added an extra RSA flag: RSA_FLAG_EXT_PKEY. Previously the rsa_mod_exp - method only got called if p,q,dmp1,dmq1,iqmp components were present, - otherwise bn_mod_exp was called. In the case of hardware keys for example - no private key components need be present and it might store extra data - in the RSA structure, which cannot be accessed from bn_mod_exp. - By setting RSA_FLAG_EXT_PKEY rsa_mod_exp will always be called for - private key operations. - [Steve Henson] - - *) Added support for SPARC Linux. - [Andy Polyakov] - - *) pem_password_cb function type incompatibly changed from - typedef int pem_password_cb(char *buf, int size, int rwflag); - to - ....(char *buf, int size, int rwflag, void *userdata); - so that applications can pass data to their callbacks: - The PEM[_ASN1]_{read,write}... functions and macros now take an - additional void * argument, which is just handed through whenever - the password callback is called. - [Damien Miller <dmiller@ilogic.com.au>; tiny changes by Bodo Moeller] - - New function SSL_CTX_set_default_passwd_cb_userdata. - - Compatibility note: As many C implementations push function arguments - onto the stack in reverse order, the new library version is likely to - interoperate with programs that have been compiled with the old - pem_password_cb definition (PEM_whatever takes some data that - happens to be on the stack as its last argument, and the callback - just ignores this garbage); but there is no guarantee whatsoever that - this will work. - - *) The -DPLATFORM="\"$(PLATFORM)\"" definition and the similar -DCFLAGS=... - (both in crypto/Makefile.ssl for use by crypto/cversion.c) caused - problems not only on Windows, but also on some Unix platforms. - To avoid problematic command lines, these definitions are now in an - auto-generated file crypto/buildinf.h (created by crypto/Makefile.ssl - for standard "make" builds, by util/mk1mf.pl for "mk1mf" builds). - [Bodo Moeller] - - *) MIPS III/IV assembler module is reimplemented. - [Andy Polyakov] - - *) More DES library cleanups: remove references to srand/rand and - delete an unused file. - [Ulf Möller] - - *) Add support for the free Netwide assembler (NASM) under Win32, - since not many people have MASM (ml) and it can be hard to obtain. - This is currently experimental but it seems to work OK and pass all - the tests. Check out INSTALL.W32 for info. - [Steve Henson] - - *) Fix memory leaks in s3_clnt.c: All non-anonymous SSL3/TLS1 connections - without temporary keys kept an extra copy of the server key, - and connections with temporary keys did not free everything in case - of an error. - [Bodo Moeller] - - *) New function RSA_check_key and new openssl rsa option -check - for verifying the consistency of RSA keys. - [Ulf Moeller, Bodo Moeller] - - *) Various changes to make Win32 compile work: - 1. Casts to avoid "loss of data" warnings in p5_crpt2.c - 2. Change unsigned int to int in b_dump.c to avoid "signed/unsigned - comparison" warnings. - 3. Add sk_<TYPE>_sort to DEF file generator and do make update. - [Steve Henson] - - *) Add a debugging option to PKCS#5 v2 key generation function: when - you #define DEBUG_PKCS5V2 passwords, salts, iteration counts and - derived keys are printed to stderr. - [Steve Henson] - - *) Copy the flags in ASN1_STRING_dup(). - [Roman E. Pavlov <pre@mo.msk.ru>] - - *) The x509 application mishandled signing requests containing DSA - keys when the signing key was also DSA and the parameters didn't match. - - It was supposed to omit the parameters when they matched the signing key: - the verifying software was then supposed to automatically use the CA's - parameters if they were absent from the end user certificate. - - Omitting parameters is no longer recommended. The test was also - the wrong way round! This was probably due to unusual behaviour in - EVP_cmp_parameters() which returns 1 if the parameters match. - This meant that parameters were omitted when they *didn't* match and - the certificate was useless. Certificates signed with 'ca' didn't have - this bug. - [Steve Henson, reported by Doug Erickson <Doug.Erickson@Part.NET>] - - *) Memory leak checking (-DCRYPTO_MDEBUG) had some problems. - The interface is as follows: - Applications can use - CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ON) aka MemCheck_start(), - CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_OFF) aka MemCheck_stop(); - "off" is now the default. - The library internally uses - CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_DISABLE) aka MemCheck_off(), - CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ENABLE) aka MemCheck_on() - to disable memory-checking temporarily. - - Some inconsistent states that previously were possible (and were - even the default) are now avoided. - - -DCRYPTO_MDEBUG_TIME is new and additionally stores the current time - with each memory chunk allocated; this is occasionally more helpful - than just having a counter. - - -DCRYPTO_MDEBUG_THREAD is also new and adds the thread ID. - - -DCRYPTO_MDEBUG_ALL enables all of the above, plus any future - extensions. - [Bodo Moeller] - - *) Introduce "mode" for SSL structures (with defaults in SSL_CTX), - which largely parallels "options", but is for changing API behaviour, - whereas "options" are about protocol behaviour. - Initial "mode" flags are: - - SSL_MODE_ENABLE_PARTIAL_WRITE Allow SSL_write to report success when - a single record has been written. - SSL_MODE_ACCEPT_MOVING_WRITE_BUFFER Don't insist that SSL_write - retries use the same buffer location. - (But all of the contents must be - copied!) - [Bodo Moeller] - - *) Bugfix: SSL_set_options ignored its parameter, only SSL_CTX_set_options - worked. - - *) Fix problems with no-hmac etc. - [Ulf Möller, pointed out by Brian Wellington <bwelling@tislabs.com>] - - *) New functions RSA_get_default_method(), RSA_set_method() and - RSA_get_method(). These allows replacement of RSA_METHODs without having - to mess around with the internals of an RSA structure. - [Steve Henson] - - *) Fix memory leaks in DSA_do_sign and DSA_is_prime. - Also really enable memory leak checks in openssl.c and in some - test programs. - [Chad C. Mulligan, Bodo Moeller] - - *) Fix a bug in d2i_ASN1_INTEGER() and i2d_ASN1_INTEGER() which can mess - up the length of negative integers. This has now been simplified to just - store the length when it is first determined and use it later, rather - than trying to keep track of where data is copied and updating it to - point to the end. - [Steve Henson, reported by Brien Wheeler - <bwheeler@authentica-security.com>] - - *) Add a new function PKCS7_signatureVerify. This allows the verification - of a PKCS#7 signature but with the signing certificate passed to the - function itself. This contrasts with PKCS7_dataVerify which assumes the - certificate is present in the PKCS#7 structure. This isn't always the - case: certificates can be omitted from a PKCS#7 structure and be - distributed by "out of band" means (such as a certificate database). - [Steve Henson] - - *) Complete the PEM_* macros with DECLARE_PEM versions to replace the - function prototypes in pem.h, also change util/mkdef.pl to add the - necessary function names. - [Steve Henson] - - *) mk1mf.pl (used by Windows builds) did not properly read the - options set by Configure in the top level Makefile, and Configure - was not even able to write more than one option correctly. - Fixed, now "no-idea no-rc5 -DCRYPTO_MDEBUG" etc. works as intended. - [Bodo Moeller] - - *) New functions CONF_load_bio() and CONF_load_fp() to allow a config - file to be loaded from a BIO or FILE pointer. The BIO version will - for example allow memory BIOs to contain config info. - [Steve Henson] - - *) New function "CRYPTO_num_locks" that returns CRYPTO_NUM_LOCKS. - Whoever hopes to achieve shared-library compatibility across versions - must use this, not the compile-time macro. - (Exercise 0.9.4: Which is the minimum library version required by - such programs?) - Note: All this applies only to multi-threaded programs, others don't - need locks. - [Bodo Moeller] - - *) Add missing case to s3_clnt.c state machine -- one of the new SSL tests - through a BIO pair triggered the default case, i.e. - SSLerr(...,SSL_R_UNKNOWN_STATE). - [Bodo Moeller] - - *) New "BIO pair" concept (crypto/bio/bss_bio.c) so that applications - can use the SSL library even if none of the specific BIOs is - appropriate. - [Bodo Moeller] - - *) Fix a bug in i2d_DSAPublicKey() which meant it returned the wrong value - for the encoded length. - [Jeon KyoungHo <khjeon@sds.samsung.co.kr>] - - *) Add initial documentation of the X509V3 functions. - [Steve Henson] - - *) Add a new pair of functions PEM_write_PKCS8PrivateKey() and - PEM_write_bio_PKCS8PrivateKey() that are equivalent to - PEM_write_PrivateKey() and PEM_write_bio_PrivateKey() but use the more - secure PKCS#8 private key format with a high iteration count. - [Steve Henson] - - *) Fix determination of Perl interpreter: A perl or perl5 - _directory_ in $PATH was also accepted as the interpreter. - [Ralf S. Engelschall] - - *) Fix demos/sign/sign.c: well there wasn't anything strictly speaking - wrong with it but it was very old and did things like calling - PEM_ASN1_read() directly and used MD5 for the hash not to mention some - unusual formatting. - [Steve Henson] - - *) Fix demos/selfsign.c: it used obsolete and deleted functions, changed - to use the new extension code. - [Steve Henson] - - *) Implement the PEM_read/PEM_write functions in crypto/pem/pem_all.c - with macros. This should make it easier to change their form, add extra - arguments etc. Fix a few PEM prototypes which didn't have cipher as a - constant. - [Steve Henson] - - *) Add to configuration table a new entry that can specify an alternative - name for unistd.h (for pre-POSIX systems); we need this for NeXTstep, - according to Mark Crispin <MRC@Panda.COM>. - [Bodo Moeller] - -#if 0 - *) DES CBC did not update the IV. Weird. - [Ben Laurie] -#else - des_cbc_encrypt does not update the IV, but des_ncbc_encrypt does. - Changing the behaviour of the former might break existing programs -- - where IV updating is needed, des_ncbc_encrypt can be used. -#endif - - *) When bntest is run from "make test" it drives bc to check its - calculations, as well as internally checking them. If an internal check - fails, it needs to cause bc to give a non-zero result or make test carries - on without noticing the failure. Fixed. - [Ben Laurie] - - *) DES library cleanups. - [Ulf Möller] - - *) Add support for PKCS#5 v2.0 PBE algorithms. This will permit PKCS#8 to be - used with any cipher unlike PKCS#5 v1.5 which can at most handle 64 bit - ciphers. NOTE: although the key derivation function has been verified - against some published test vectors it has not been extensively tested - yet. Added a -v2 "cipher" option to pkcs8 application to allow the use - of v2.0. - [Steve Henson] - - *) Instead of "mkdir -p", which is not fully portable, use new - Perl script "util/mkdir-p.pl". - [Bodo Moeller] - - *) Rewrite the way password based encryption (PBE) is handled. It used to - assume that the ASN1 AlgorithmIdentifier parameter was a PBEParameter - structure. This was true for the PKCS#5 v1.5 and PKCS#12 PBE algorithms - but doesn't apply to PKCS#5 v2.0 where it can be something else. Now - the 'parameter' field of the AlgorithmIdentifier is passed to the - underlying key generation function so it must do its own ASN1 parsing. - This has also changed the EVP_PBE_CipherInit() function which now has a - 'parameter' argument instead of literal salt and iteration count values - and the function EVP_PBE_ALGOR_CipherInit() has been deleted. - [Steve Henson] - - *) Support for PKCS#5 v1.5 compatible password based encryption algorithms - and PKCS#8 functionality. New 'pkcs8' application linked to openssl. - Needed to change the PEM_STRING_EVP_PKEY value which was just "PRIVATE - KEY" because this clashed with PKCS#8 unencrypted string. Since this - value was just used as a "magic string" and not used directly its - value doesn't matter. - [Steve Henson] - - *) Introduce some semblance of const correctness to BN. Shame C doesn't - support mutable. - [Ben Laurie] - - *) "linux-sparc64" configuration (ultrapenguin). - [Ray Miller <ray.miller@oucs.ox.ac.uk>] - "linux-sparc" configuration. - [Christian Forster <fo@hawo.stw.uni-erlangen.de>] - - *) config now generates no-xxx options for missing ciphers. - [Ulf Möller] - - *) Support the EBCDIC character set (work in progress). - File ebcdic.c not yet included because it has a different license. - [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>] - - *) Support BS2000/OSD-POSIX. - [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>] - - *) Make callbacks for key generation use void * instead of char *. - [Ben Laurie] - - *) Make S/MIME samples compile (not yet tested). - [Ben Laurie] - - *) Additional typesafe stacks. - [Ben Laurie] - - *) New configuration variants "bsdi-elf-gcc" (BSD/OS 4.x). - [Bodo Moeller] - - - Changes between 0.9.3 and 0.9.3a [29 May 1999] - - *) New configuration variant "sco5-gcc". - - *) Updated some demos. - [Sean O Riordain, Wade Scholine] - - *) Add missing BIO_free at exit of pkcs12 application. - [Wu Zhigang] - - *) Fix memory leak in conf.c. - [Steve Henson] - - *) Updates for Win32 to assembler version of MD5. - [Steve Henson] - - *) Set #! path to perl in apps/der_chop to where we found it - instead of using a fixed path. - [Bodo Moeller] - - *) SHA library changes for irix64-mips4-cc. - [Andy Polyakov] - - *) Improvements for VMS support. - [Richard Levitte] - - - Changes between 0.9.2b and 0.9.3 [24 May 1999] - - *) Bignum library bug fix. IRIX 6 passes "make test" now! - This also avoids the problems with SC4.2 and unpatched SC5. - [Andy Polyakov <appro@fy.chalmers.se>] - - *) New functions sk_num, sk_value and sk_set to replace the previous macros. - These are required because of the typesafe stack would otherwise break - existing code. If old code used a structure member which used to be STACK - and is now STACK_OF (for example cert in a PKCS7_SIGNED structure) with - sk_num or sk_value it would produce an error because the num, data members - are not present in STACK_OF. Now it just produces a warning. sk_set - replaces the old method of assigning a value to sk_value - (e.g. sk_value(x, i) = y) which the library used in a few cases. Any code - that does this will no longer work (and should use sk_set instead) but - this could be regarded as a "questionable" behaviour anyway. - [Steve Henson] - - *) Fix most of the other PKCS#7 bugs. The "experimental" code can now - correctly handle encrypted S/MIME data. - [Steve Henson] - - *) Change type of various DES function arguments from des_cblock - (which means, in function argument declarations, pointer to char) - to des_cblock * (meaning pointer to array with 8 char elements), - which allows the compiler to do more typechecking; it was like - that back in SSLeay, but with lots of ugly casts. - - Introduce new type const_des_cblock. - [Bodo Moeller] - - *) Reorganise the PKCS#7 library and get rid of some of the more obvious - problems: find RecipientInfo structure that matches recipient certificate - and initialise the ASN1 structures properly based on passed cipher. - [Steve Henson] - - *) Belatedly make the BN tests actually check the results. - [Ben Laurie] - - *) Fix the encoding and decoding of negative ASN1 INTEGERS and conversion - to and from BNs: it was completely broken. New compilation option - NEG_PUBKEY_BUG to allow for some broken certificates that encode public - key elements as negative integers. - [Steve Henson] - - *) Reorganize and speed up MD5. - [Andy Polyakov <appro@fy.chalmers.se>] - - *) VMS support. - [Richard Levitte <richard@levitte.org>] - - *) New option -out to asn1parse to allow the parsed structure to be - output to a file. This is most useful when combined with the -strparse - option to examine the output of things like OCTET STRINGS. - [Steve Henson] - - *) Make SSL library a little more fool-proof by not requiring any longer - that SSL_set_{accept,connect}_state be called before - SSL_{accept,connect} may be used (SSL_set_..._state is omitted - in many applications because usually everything *appeared* to work as - intended anyway -- now it really works as intended). - [Bodo Moeller] - - *) Move openssl.cnf out of lib/. - [Ulf Möller] - - *) Fix various things to let OpenSSL even pass ``egcc -pipe -O2 -Wall - -Wshadow -Wpointer-arith -Wcast-align -Wmissing-prototypes - -Wmissing-declarations -Wnested-externs -Winline'' with EGCS 1.1.2+ - [Ralf S. Engelschall] - - *) Various fixes to the EVP and PKCS#7 code. It may now be able to - handle PKCS#7 enveloped data properly. - [Sebastian Akerman <sak@parallelconsulting.com>, modified by Steve] - - *) Create a duplicate of the SSL_CTX's CERT in SSL_new instead of - copying pointers. The cert_st handling is changed by this in - various ways (and thus what used to be known as ctx->default_cert - is now called ctx->cert, since we don't resort to s->ctx->[default_]cert - any longer when s->cert does not give us what we need). - ssl_cert_instantiate becomes obsolete by this change. - As soon as we've got the new code right (possibly it already is?), - we have solved a couple of bugs of the earlier code where s->cert - was used as if it could not have been shared with other SSL structures. - - Note that using the SSL API in certain dirty ways now will result - in different behaviour than observed with earlier library versions: - Changing settings for an SSL_CTX *ctx after having done s = SSL_new(ctx) - does not influence s as it used to. - - In order to clean up things more thoroughly, inside SSL_SESSION - we don't use CERT any longer, but a new structure SESS_CERT - that holds per-session data (if available); currently, this is - the peer's certificate chain and, for clients, the server's certificate - and temporary key. CERT holds only those values that can have - meaningful defaults in an SSL_CTX. - [Bodo Moeller] - - *) New function X509V3_EXT_i2d() to create an X509_EXTENSION structure - from the internal representation. Various PKCS#7 fixes: remove some - evil casts and set the enc_dig_alg field properly based on the signing - key type. - [Steve Henson] - - *) Allow PKCS#12 password to be set from the command line or the - environment. Let 'ca' get its config file name from the environment - variables "OPENSSL_CONF" or "SSLEAY_CONF" (for consistency with 'req' - and 'x509'). - [Steve Henson] - - *) Allow certificate policies extension to use an IA5STRING for the - organization field. This is contrary to the PKIX definition but - VeriSign uses it and IE5 only recognises this form. Document 'x509' - extension option. - [Steve Henson] - - *) Add PEDANTIC compiler flag to allow compilation with gcc -pedantic, - without disallowing inline assembler and the like for non-pedantic builds. - [Ben Laurie] - - *) Support Borland C++ builder. - [Janez Jere <jj@void.si>, modified by Ulf Möller] - - *) Support Mingw32. - [Ulf Möller] - - *) SHA-1 cleanups and performance enhancements. - [Andy Polyakov <appro@fy.chalmers.se>] - - *) Sparc v8plus assembler for the bignum library. - [Andy Polyakov <appro@fy.chalmers.se>] - - *) Accept any -xxx and +xxx compiler options in Configure. - [Ulf Möller] - - *) Update HPUX configuration. - [Anonymous] - - *) Add missing sk_<type>_unshift() function to safestack.h - [Ralf S. Engelschall] - - *) New function SSL_CTX_use_certificate_chain_file that sets the - "extra_cert"s in addition to the certificate. (This makes sense - only for "PEM" format files, as chains as a whole are not - DER-encoded.) - [Bodo Moeller] - - *) Support verify_depth from the SSL API. - x509_vfy.c had what can be considered an off-by-one-error: - Its depth (which was not part of the external interface) - was actually counting the number of certificates in a chain; - now it really counts the depth. - [Bodo Moeller] - - *) Bugfix in crypto/x509/x509_cmp.c: The SSLerr macro was used - instead of X509err, which often resulted in confusing error - messages since the error codes are not globally unique - (e.g. an alleged error in ssl3_accept when a certificate - didn't match the private key). - - *) New function SSL_CTX_set_session_id_context that allows to set a default - value (so that you don't need SSL_set_session_id_context for each - connection using the SSL_CTX). - [Bodo Moeller] - - *) OAEP decoding bug fix. - [Ulf Möller] - - *) Support INSTALL_PREFIX for package builders, as proposed by - David Harris. - [Bodo Moeller] - - *) New Configure options "threads" and "no-threads". For systems - where the proper compiler options are known (currently Solaris - and Linux), "threads" is the default. - [Bodo Moeller] - - *) New script util/mklink.pl as a faster substitute for util/mklink.sh. - [Bodo Moeller] - - *) Install various scripts to $(OPENSSLDIR)/misc, not to - $(INSTALLTOP)/bin -- they shouldn't clutter directories - such as /usr/local/bin. - [Bodo Moeller] - - *) "make linux-shared" to build shared libraries. - [Niels Poppe <niels@netbox.org>] - - *) New Configure option no-<cipher> (rsa, idea, rc5, ...). - [Ulf Möller] - - *) Add the PKCS#12 API documentation to openssl.txt. Preliminary support for - extension adding in x509 utility. - [Steve Henson] - - *) Remove NOPROTO sections and error code comments. - [Ulf Möller] - - *) Partial rewrite of the DEF file generator to now parse the ANSI - prototypes. - [Steve Henson] - - *) New Configure options --prefix=DIR and --openssldir=DIR. - [Ulf Möller] - - *) Complete rewrite of the error code script(s). It is all now handled - by one script at the top level which handles error code gathering, - header rewriting and C source file generation. It should be much better - than the old method: it now uses a modified version of Ulf's parser to - read the ANSI prototypes in all header files (thus the old K&R definitions - aren't needed for error creation any more) and do a better job of - translating function codes into names. The old 'ASN1 error code embedded - in a comment' is no longer necessary and it doesn't use .err files which - have now been deleted. Also the error code call doesn't have to appear all - on one line (which resulted in some large lines...). - [Steve Henson] - - *) Change #include filenames from <foo.h> to <openssl/foo.h>. - [Bodo Moeller] - - *) Change behaviour of ssl2_read when facing length-0 packets: Don't return - 0 (which usually indicates a closed connection), but continue reading. - [Bodo Moeller] - - *) Fix some race conditions. - [Bodo Moeller] - - *) Add support for CRL distribution points extension. Add Certificate - Policies and CRL distribution points documentation. - [Steve Henson] - - *) Move the autogenerated header file parts to crypto/opensslconf.h. - [Ulf Möller] - - *) Fix new 56-bit DES export ciphersuites: they were using 7 bytes instead of - 8 of keying material. Merlin has also confirmed interop with this fix - between OpenSSL and Baltimore C/SSL 2.0 and J/SSL 2.0. - [Merlin Hughes <merlin@baltimore.ie>] - - *) Fix lots of warnings. - [Richard Levitte <levitte@stacken.kth.se>] - - *) In add_cert_dir() in crypto/x509/by_dir.c, break out of the loop if - the directory spec didn't end with a LIST_SEPARATOR_CHAR. - [Richard Levitte <levitte@stacken.kth.se>] - - *) Fix problems with sizeof(long) == 8. - [Andy Polyakov <appro@fy.chalmers.se>] - - *) Change functions to ANSI C. - [Ulf Möller] - - *) Fix typos in error codes. - [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>, Ulf Möller] - - *) Remove defunct assembler files from Configure. - [Ulf Möller] - - *) SPARC v8 assembler BIGNUM implementation. - [Andy Polyakov <appro@fy.chalmers.se>] - - *) Support for Certificate Policies extension: both print and set. - Various additions to support the r2i method this uses. - [Steve Henson] - - *) A lot of constification, and fix a bug in X509_NAME_oneline() that could - return a const string when you are expecting an allocated buffer. - [Ben Laurie] - - *) Add support for ASN1 types UTF8String and VISIBLESTRING, also the CHOICE - types DirectoryString and DisplayText. - [Steve Henson] - - *) Add code to allow r2i extensions to access the configuration database, - add an LHASH database driver and add several ctx helper functions. - [Steve Henson] - - *) Fix an evil bug in bn_expand2() which caused various BN functions to - fail when they extended the size of a BIGNUM. - [Steve Henson] - - *) Various utility functions to handle SXNet extension. Modify mkdef.pl to - support typesafe stack. - [Steve Henson] - - *) Fix typo in SSL_[gs]et_options(). - [Nils Frostberg <nils@medcom.se>] - - *) Delete various functions and files that belonged to the (now obsolete) - old X509V3 handling code. - [Steve Henson] - - *) New Configure option "rsaref". - [Ulf Möller] - - *) Don't auto-generate pem.h. - [Bodo Moeller] - - *) Introduce type-safe ASN.1 SETs. - [Ben Laurie] - - *) Convert various additional casted stacks to type-safe STACK_OF() variants. - [Ben Laurie, Ralf S. Engelschall, Steve Henson] - - *) Introduce type-safe STACKs. This will almost certainly break lots of code - that links with OpenSSL (well at least cause lots of warnings), but fear - not: the conversion is trivial, and it eliminates loads of evil casts. A - few STACKed things have been converted already. Feel free to convert more. - In the fullness of time, I'll do away with the STACK type altogether. - [Ben Laurie] - - *) Add `openssl ca -revoke <certfile>' facility which revokes a certificate - specified in <certfile> by updating the entry in the index.txt file. - This way one no longer has to edit the index.txt file manually for - revoking a certificate. The -revoke option does the gory details now. - [Massimiliano Pala <madwolf@openca.org>, Ralf S. Engelschall] - - *) Fix `openssl crl -noout -text' combination where `-noout' killed the - `-text' option at all and this way the `-noout -text' combination was - inconsistent in `openssl crl' with the friends in `openssl x509|rsa|dsa'. - [Ralf S. Engelschall] - - *) Make sure a corresponding plain text error message exists for the - X509_V_ERR_CERT_REVOKED/23 error number which can occur when a - verify callback function determined that a certificate was revoked. - [Ralf S. Engelschall] - - *) Bugfix: In test/testenc, don't test "openssl <cipher>" for - ciphers that were excluded, e.g. by -DNO_IDEA. Also, test - all available ciphers including rc5, which was forgotten until now. - In order to let the testing shell script know which algorithms - are available, a new (up to now undocumented) command - "openssl list-cipher-commands" is used. - [Bodo Moeller] - - *) Bugfix: s_client occasionally would sleep in select() when - it should have checked SSL_pending() first. - [Bodo Moeller] - - *) New functions DSA_do_sign and DSA_do_verify to provide access to - the raw DSA values prior to ASN.1 encoding. - [Ulf Möller] - - *) Tweaks to Configure - [Niels Poppe <niels@netbox.org>] - - *) Add support for PKCS#5 v2.0 ASN1 PBES2 structures. No other support, - yet... - [Steve Henson] - - *) New variables $(RANLIB) and $(PERL) in the Makefiles. - [Ulf Möller] - - *) New config option to avoid instructions that are illegal on the 80386. - The default code is faster, but requires at least a 486. - [Ulf Möller] - - *) Got rid of old SSL2_CLIENT_VERSION (inconsistently used) and - SSL2_SERVER_VERSION (not used at all) macros, which are now the - same as SSL2_VERSION anyway. - [Bodo Moeller] - - *) New "-showcerts" option for s_client. - [Bodo Moeller] - - *) Still more PKCS#12 integration. Add pkcs12 application to openssl - application. Various cleanups and fixes. - [Steve Henson] - - *) More PKCS#12 integration. Add new pkcs12 directory with Makefile.ssl and - modify error routines to work internally. Add error codes and PBE init - to library startup routines. - [Steve Henson] - - *) Further PKCS#12 integration. Added password based encryption, PKCS#8 and - packing functions to asn1 and evp. Changed function names and error - codes along the way. - [Steve Henson] - - *) PKCS12 integration: and so it begins... First of several patches to - slowly integrate PKCS#12 functionality into OpenSSL. Add PKCS#12 - objects to objects.h - [Steve Henson] - - *) Add a new 'indent' option to some X509V3 extension code. Initial ASN1 - and display support for Thawte strong extranet extension. - [Steve Henson] - - *) Add LinuxPPC support. - [Jeff Dubrule <igor@pobox.org>] - - *) Get rid of redundant BN file bn_mulw.c, and rename bn_div64 to - bn_div_words in alpha.s. - [Hannes Reinecke <H.Reinecke@hw.ac.uk> and Ben Laurie] - - *) Make sure the RSA OAEP test is skipped under -DRSAref because - OAEP isn't supported when OpenSSL is built with RSAref. - [Ulf Moeller <ulf@fitug.de>] - - *) Move definitions of IS_SET/IS_SEQUENCE inside crypto/asn1/asn1.h - so they no longer are missing under -DNOPROTO. - [Soren S. Jorvang <soren@t.dk>] - - - Changes between 0.9.1c and 0.9.2b [22 Mar 1999] - - *) Make SSL_get_peer_cert_chain() work in servers. Unfortunately, it still - doesn't work when the session is reused. Coming soon! - [Ben Laurie] - - *) Fix a security hole, that allows sessions to be reused in the wrong - context thus bypassing client cert protection! All software that uses - client certs and session caches in multiple contexts NEEDS PATCHING to - allow session reuse! A fuller solution is in the works. - [Ben Laurie, problem pointed out by Holger Reif, Bodo Moeller (and ???)] - - *) Some more source tree cleanups (removed obsolete files - crypto/bf/asm/bf586.pl, test/test.txt and crypto/sha/asm/f.s; changed - permission on "config" script to be executable) and a fix for the INSTALL - document. - [Ulf Moeller <ulf@fitug.de>] - - *) Remove some legacy and erroneous uses of malloc, free instead of - Malloc, Free. - [Lennart Bang <lob@netstream.se>, with minor changes by Steve] - - *) Make rsa_oaep_test return non-zero on error. - [Ulf Moeller <ulf@fitug.de>] - - *) Add support for native Solaris shared libraries. Configure - solaris-sparc-sc4-pic, make, then run shlib/solaris-sc4.sh. It'd be nice - if someone would make that last step automatic. - [Matthias Loepfe <Matthias.Loepfe@AdNovum.CH>] - - *) ctx_size was not built with the right compiler during "make links". Fixed. - [Ben Laurie] - - *) Change the meaning of 'ALL' in the cipher list. It now means "everything - except NULL ciphers". This means the default cipher list will no longer - enable NULL ciphers. They need to be specifically enabled e.g. with - the string "DEFAULT:eNULL". - [Steve Henson] - - *) Fix to RSA private encryption routines: if p < q then it would - occasionally produce an invalid result. This will only happen with - externally generated keys because OpenSSL (and SSLeay) ensure p > q. - [Steve Henson] - - *) Be less restrictive and allow also `perl util/perlpath.pl - /path/to/bin/perl' in addition to `perl util/perlpath.pl /path/to/bin', - because this way one can also use an interpreter named `perl5' (which is - usually the name of Perl 5.xxx on platforms where an Perl 4.x is still - installed as `perl'). - [Matthias Loepfe <Matthias.Loepfe@adnovum.ch>] - - *) Let util/clean-depend.pl work also with older Perl 5.00x versions. - [Matthias Loepfe <Matthias.Loepfe@adnovum.ch>] - - *) Fix Makefile.org so CC,CFLAG etc are passed to 'make links' add - advapi32.lib to Win32 build and change the pem test comparison - to fc.exe (thanks to Ulrich Kroener <kroneru@yahoo.com> for the - suggestion). Fix misplaced ASNI prototypes and declarations in evp.h - and crypto/des/ede_cbcm_enc.c. - [Steve Henson] - - *) DES quad checksum was broken on big-endian architectures. Fixed. - [Ben Laurie] - - *) Comment out two functions in bio.h that aren't implemented. Fix up the - Win32 test batch file so it (might) work again. The Win32 test batch file - is horrible: I feel ill.... - [Steve Henson] - - *) Move various #ifdefs around so NO_SYSLOG, NO_DIRENT etc are now selected - in e_os.h. Audit of header files to check ANSI and non ANSI - sections: 10 functions were absent from non ANSI section and not exported - from Windows DLLs. Fixed up libeay.num for new functions. - [Steve Henson] - - *) Make `openssl version' output lines consistent. - [Ralf S. Engelschall] - - *) Fix Win32 symbol export lists for BIO functions: Added - BIO_get_ex_new_index, BIO_get_ex_num, BIO_get_ex_data and BIO_set_ex_data - to ms/libeay{16,32}.def. - [Ralf S. Engelschall] - - *) Second round of fixing the OpenSSL perl/ stuff. It now at least compiled - fine under Unix and passes some trivial tests I've now added. But the - whole stuff is horribly incomplete, so a README.1ST with a disclaimer was - added to make sure no one expects that this stuff really works in the - OpenSSL 0.9.2 release. Additionally I've started to clean the XS sources - up and fixed a few little bugs and inconsistencies in OpenSSL.{pm,xs} and - openssl_bio.xs. - [Ralf S. Engelschall] - - *) Fix the generation of two part addresses in perl. - [Kenji Miyake <kenji@miyake.org>, integrated by Ben Laurie] - - *) Add config entry for Linux on MIPS. - [John Tobey <jtobey@channel1.com>] - - *) Make links whenever Configure is run, unless we are on Windoze. - [Ben Laurie] - - *) Permit extensions to be added to CRLs using crl_section in openssl.cnf. - Currently only issuerAltName and AuthorityKeyIdentifier make any sense - in CRLs. - [Steve Henson] - - *) Add a useful kludge to allow package maintainers to specify compiler and - other platforms details on the command line without having to patch the - Configure script every time: One now can use ``perl Configure - <id>:<details>'', i.e. platform ids are allowed to have details appended - to them (separated by colons). This is treated as there would be a static - pre-configured entry in Configure's %table under key <id> with value - <details> and ``perl Configure <id>'' is called. So, when you want to - perform a quick test-compile under FreeBSD 3.1 with pgcc and without - assembler stuff you can use ``perl Configure "FreeBSD-elf:pgcc:-O6:::"'' - now, which overrides the FreeBSD-elf entry on-the-fly. - [Ralf S. Engelschall] - - *) Disable new TLS1 ciphersuites by default: they aren't official yet. - [Ben Laurie] - - *) Allow DSO flags like -fpic, -fPIC, -KPIC etc. to be specified - on the `perl Configure ...' command line. This way one can compile - OpenSSL libraries with Position Independent Code (PIC) which is needed - for linking it into DSOs. - [Ralf S. Engelschall] - - *) Remarkably, export ciphers were totally broken and no-one had noticed! - Fixed. - [Ben Laurie] - - *) Cleaned up the LICENSE document: The official contact for any license - questions now is the OpenSSL core team under openssl-core@openssl.org. - And add a paragraph about the dual-license situation to make sure people - recognize that _BOTH_ the OpenSSL license _AND_ the SSLeay license apply - to the OpenSSL toolkit. - [Ralf S. Engelschall] - - *) General source tree makefile cleanups: Made `making xxx in yyy...' - display consistent in the source tree and replaced `/bin/rm' by `rm'. - Additionally cleaned up the `make links' target: Remove unnecessary - semicolons, subsequent redundant removes, inline point.sh into mklink.sh - to speed processing and no longer clutter the display with confusing - stuff. Instead only the actually done links are displayed. - [Ralf S. Engelschall] - - *) Permit null encryption ciphersuites, used for authentication only. It used - to be necessary to set the preprocessor define SSL_ALLOW_ENULL to do this. - It is now necessary to set SSL_FORBID_ENULL to prevent the use of null - encryption. - [Ben Laurie] - - *) Add a bunch of fixes to the PKCS#7 stuff. It used to sometimes reorder - signed attributes when verifying signatures (this would break them), - the detached data encoding was wrong and public keys obtained using - X509_get_pubkey() weren't freed. - [Steve Henson] - - *) Add text documentation for the BUFFER functions. Also added a work around - to a Win95 console bug. This was triggered by the password read stuff: the - last character typed gets carried over to the next fread(). If you were - generating a new cert request using 'req' for example then the last - character of the passphrase would be CR which would then enter the first - field as blank. - [Steve Henson] - - *) Added the new `Includes OpenSSL Cryptography Software' button as - doc/openssl_button.{gif,html} which is similar in style to the old SSLeay - button and can be used by applications based on OpenSSL to show the - relationship to the OpenSSL project. - [Ralf S. Engelschall] - - *) Remove confusing variables in function signatures in files - ssl/ssl_lib.c and ssl/ssl.h. - [Lennart Bong <lob@kulthea.stacken.kth.se>] - - *) Don't install bss_file.c under PREFIX/include/ - [Lennart Bong <lob@kulthea.stacken.kth.se>] - - *) Get the Win32 compile working again. Modify mkdef.pl so it can handle - functions that return function pointers and has support for NT specific - stuff. Fix mk1mf.pl and VC-32.pl to support NT differences also. Various - #ifdef WIN32 and WINNTs sprinkled about the place and some changes from - unsigned to signed types: this was killing the Win32 compile. - [Steve Henson] - - *) Add new certificate file to stack functions, - SSL_add_dir_cert_subjects_to_stack() and - SSL_add_file_cert_subjects_to_stack(). These largely supplant - SSL_load_client_CA_file(), and can be used to add multiple certs easily - to a stack (usually this is then handed to SSL_CTX_set_client_CA_list()). - This means that Apache-SSL and similar packages don't have to mess around - to add as many CAs as they want to the preferred list. - [Ben Laurie] - - *) Experiment with doxygen documentation. Currently only partially applied to - ssl/ssl_lib.c. - See http://www.stack.nl/~dimitri/doxygen/index.html, and run doxygen with - openssl.doxy as the configuration file. - [Ben Laurie] - - *) Get rid of remaining C++-style comments which strict C compilers hate. - [Ralf S. Engelschall, pointed out by Carlos Amengual] - - *) Changed BN_RECURSION in bn_mont.c to BN_RECURSION_MONT so it is not - compiled in by default: it has problems with large keys. - [Steve Henson] - - *) Add a bunch of SSL_xxx() functions for configuring the temporary RSA and - DH private keys and/or callback functions which directly correspond to - their SSL_CTX_xxx() counterparts but work on a per-connection basis. This - is needed for applications which have to configure certificates on a - per-connection basis (e.g. Apache+mod_ssl) instead of a per-context basis - (e.g. s_server). - For the RSA certificate situation is makes no difference, but - for the DSA certificate situation this fixes the "no shared cipher" - problem where the OpenSSL cipher selection procedure failed because the - temporary keys were not overtaken from the context and the API provided - no way to reconfigure them. - The new functions now let applications reconfigure the stuff and they - are in detail: SSL_need_tmp_RSA, SSL_set_tmp_rsa, SSL_set_tmp_dh, - SSL_set_tmp_rsa_callback and SSL_set_tmp_dh_callback. Additionally a new - non-public-API function ssl_cert_instantiate() is used as a helper - function and also to reduce code redundancy inside ssl_rsa.c. - [Ralf S. Engelschall] - - *) Move s_server -dcert and -dkey options out of the undocumented feature - area because they are useful for the DSA situation and should be - recognized by the users. - [Ralf S. Engelschall] - - *) Fix the cipher decision scheme for export ciphers: the export bits are - *not* within SSL_MKEY_MASK or SSL_AUTH_MASK, they are within - SSL_EXP_MASK. So, the original variable has to be used instead of the - already masked variable. - [Richard Levitte <levitte@stacken.kth.se>] - - *) Fix 'port' variable from `int' to `unsigned int' in crypto/bio/b_sock.c - [Richard Levitte <levitte@stacken.kth.se>] - - *) Change type of another md_len variable in pk7_doit.c:PKCS7_dataFinal() - from `int' to `unsigned int' because it's a length and initialized by - EVP_DigestFinal() which expects an `unsigned int *'. - [Richard Levitte <levitte@stacken.kth.se>] - - *) Don't hard-code path to Perl interpreter on shebang line of Configure - script. Instead use the usual Shell->Perl transition trick. - [Ralf S. Engelschall] - - *) Make `openssl x509 -noout -modulus' functional also for DSA certificates - (in addition to RSA certificates) to match the behaviour of `openssl dsa - -noout -modulus' as it's already the case for `openssl rsa -noout - -modulus'. For RSA the -modulus is the real "modulus" while for DSA - currently the public key is printed (a decision which was already done by - `openssl dsa -modulus' in the past) which serves a similar purpose. - Additionally the NO_RSA no longer completely removes the whole -modulus - option; it now only avoids using the RSA stuff. Same applies to NO_DSA - now, too. - [Ralf S. Engelschall] - - *) Add Arne Ansper's reliable BIO - this is an encrypted, block-digested - BIO. See the source (crypto/evp/bio_ok.c) for more info. - [Arne Ansper <arne@ats.cyber.ee>] - - *) Dump the old yucky req code that tried (and failed) to allow raw OIDs - to be added. Now both 'req' and 'ca' can use new objects defined in the - config file. - [Steve Henson] - - *) Add cool BIO that does syslog (or event log on NT). - [Arne Ansper <arne@ats.cyber.ee>, integrated by Ben Laurie] - - *) Add support for new TLS ciphersuites, TLS_RSA_EXPORT56_WITH_RC4_56_MD5, - TLS_RSA_EXPORT56_WITH_RC2_CBC_56_MD5 and - TLS_RSA_EXPORT56_WITH_DES_CBC_SHA, as specified in "56-bit Export Cipher - Suites For TLS", draft-ietf-tls-56-bit-ciphersuites-00.txt. - [Ben Laurie] - - *) Add preliminary config info for new extension code. - [Steve Henson] - - *) Make RSA_NO_PADDING really use no padding. - [Ulf Moeller <ulf@fitug.de>] - - *) Generate errors when private/public key check is done. - [Ben Laurie] - - *) Overhaul for 'crl' utility. New function X509_CRL_print. Partial support - for some CRL extensions and new objects added. - [Steve Henson] - - *) Really fix the ASN1 IMPLICIT bug this time... Partial support for private - key usage extension and fuller support for authority key id. - [Steve Henson] - - *) Add OAEP encryption for the OpenSSL crypto library. OAEP is the improved - padding method for RSA, which is recommended for new applications in PKCS - #1 v2.0 (RFC 2437, October 1998). - OAEP (Optimal Asymmetric Encryption Padding) has better theoretical - foundations than the ad-hoc padding used in PKCS #1 v1.5. It is secure - against Bleichbacher's attack on RSA. - [Ulf Moeller <ulf@fitug.de>, reformatted, corrected and integrated by - Ben Laurie] - - *) Updates to the new SSL compression code - [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)] - - *) Fix so that the version number in the master secret, when passed - via RSA, checks that if TLS was proposed, but we roll back to SSLv3 - (because the server will not accept higher), that the version number - is 0x03,0x01, not 0x03,0x00 - [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)] - - *) Run extensive memory leak checks on SSL apps. Fixed *lots* of memory - leaks in ssl/ relating to new X509_get_pubkey() behaviour. Also fixes - in apps/ and an unrelated leak in crypto/dsa/dsa_vrf.c - [Steve Henson] - - *) Support for RAW extensions where an arbitrary extension can be - created by including its DER encoding. See apps/openssl.cnf for - an example. - [Steve Henson] - - *) Make sure latest Perl versions don't interpret some generated C array - code as Perl array code in the crypto/err/err_genc.pl script. - [Lars Weber <3weber@informatik.uni-hamburg.de>] - - *) Modify ms/do_ms.bat to not generate assembly language makefiles since - not many people have the assembler. Various Win32 compilation fixes and - update to the INSTALL.W32 file with (hopefully) more accurate Win32 - build instructions. - [Steve Henson] - - *) Modify configure script 'Configure' to automatically create crypto/date.h - file under Win32 and also build pem.h from pem.org. New script - util/mkfiles.pl to create the MINFO file on environments that can't do a - 'make files': perl util/mkfiles.pl >MINFO should work. - [Steve Henson] - - *) Major rework of DES function declarations, in the pursuit of correctness - and purity. As a result, many evil casts evaporated, and some weirdness, - too. You may find this causes warnings in your code. Zapping your evil - casts will probably fix them. Mostly. - [Ben Laurie] - - *) Fix for a typo in asn1.h. Bug fix to object creation script - obj_dat.pl. It considered a zero in an object definition to mean - "end of object": none of the objects in objects.h have any zeros - so it wasn't spotted. - [Steve Henson, reported by Erwann ABALEA <eabalea@certplus.com>] - - *) Add support for Triple DES Cipher Block Chaining with Output Feedback - Masking (CBCM). In the absence of test vectors, the best I have been able - to do is check that the decrypt undoes the encrypt, so far. Send me test - vectors if you have them. - [Ben Laurie] - - *) Correct calculation of key length for export ciphers (too much space was - allocated for null ciphers). This has not been tested! - [Ben Laurie] - - *) Modifications to the mkdef.pl for Win32 DEF file creation. The usage - message is now correct (it understands "crypto" and "ssl" on its - command line). There is also now an "update" option. This will update - the util/ssleay.num and util/libeay.num files with any new functions. - If you do a: - perl util/mkdef.pl crypto ssl update - it will update them. - [Steve Henson] - - *) Overhauled the Perl interface (perl/*): - - ported BN stuff to OpenSSL's different BN library - - made the perl/ source tree CVS-aware - - renamed the package from SSLeay to OpenSSL (the files still contain - their history because I've copied them in the repository) - - removed obsolete files (the test scripts will be replaced - by better Test::Harness variants in the future) - [Ralf S. Engelschall] - - *) First cut for a very conservative source tree cleanup: - 1. merge various obsolete readme texts into doc/ssleay.txt - where we collect the old documents and readme texts. - 2. remove the first part of files where I'm already sure that we no - longer need them because of three reasons: either they are just temporary - files which were left by Eric or they are preserved original files where - I've verified that the diff is also available in the CVS via "cvs diff - -rSSLeay_0_8_1b" or they were renamed (as it was definitely the case for - the crypto/md/ stuff). - [Ralf S. Engelschall] - - *) More extension code. Incomplete support for subject and issuer alt - name, issuer and authority key id. Change the i2v function parameters - and add an extra 'crl' parameter in the X509V3_CTX structure: guess - what that's for :-) Fix to ASN1 macro which messed up - IMPLICIT tag and add f_enum.c which adds a2i, i2a for ENUMERATED. - [Steve Henson] - - *) Preliminary support for ENUMERATED type. This is largely copied from the - INTEGER code. - [Steve Henson] - - *) Add new function, EVP_MD_CTX_copy() to replace frequent use of memcpy. - [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)] - - *) Make sure `make rehash' target really finds the `openssl' program. - [Ralf S. Engelschall, Matthias Loepfe <Matthias.Loepfe@adnovum.ch>] - - *) Squeeze another 7% of speed out of MD5 assembler, at least on a P2. I'd - like to hear about it if this slows down other processors. - [Ben Laurie] - - *) Add CygWin32 platform information to Configure script. - [Alan Batie <batie@aahz.jf.intel.com>] - - *) Fixed ms/32all.bat script: `no_asm' -> `no-asm' - [Rainer W. Gerling <gerling@mpg-gv.mpg.de>] - - *) New program nseq to manipulate netscape certificate sequences - [Steve Henson] - - *) Modify crl2pkcs7 so it supports multiple -certfile arguments. Fix a - few typos. - [Steve Henson] - - *) Fixes to BN code. Previously the default was to define BN_RECURSION - but the BN code had some problems that would cause failures when - doing certificate verification and some other functions. - [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)] - - *) Add ASN1 and PEM code to support netscape certificate sequences. - [Steve Henson] - - *) Add ASN1 and PEM code to support netscape certificate sequences. - [Steve Henson] - - *) Add several PKIX and private extended key usage OIDs. - [Steve Henson] - - *) Modify the 'ca' program to handle the new extension code. Modify - openssl.cnf for new extension format, add comments. - [Steve Henson] - - *) More X509 V3 changes. Fix typo in v3_bitstr.c. Add support to 'req' - and add a sample to openssl.cnf so req -x509 now adds appropriate - CA extensions. - [Steve Henson] - - *) Continued X509 V3 changes. Add to other makefiles, integrate with the - error code, add initial support to X509_print() and x509 application. - [Steve Henson] - - *) Takes a deep breath and start adding X509 V3 extension support code. Add - files in crypto/x509v3. Move original stuff to crypto/x509v3/old. All this - stuff is currently isolated and isn't even compiled yet. - [Steve Henson] - - *) Continuing patches for GeneralizedTime. Fix up certificate and CRL - ASN1 to use ASN1_TIME and modify print routines to use ASN1_TIME_print. - Removed the versions check from X509 routines when loading extensions: - this allows certain broken certificates that don't set the version - properly to be processed. - [Steve Henson] - - *) Deal with irritating shit to do with dependencies, in YAAHW (Yet Another - Ad Hoc Way) - Makefile.ssls now all contain local dependencies, which - can still be regenerated with "make depend". - [Ben Laurie] - - *) Spelling mistake in C version of CAST-128. - [Ben Laurie, reported by Jeremy Hylton <jeremy@cnri.reston.va.us>] - - *) Changes to the error generation code. The perl script err-code.pl - now reads in the old error codes and retains the old numbers, only - adding new ones if necessary. It also only changes the .err files if new - codes are added. The makefiles have been modified to only insert errors - when needed (to avoid needlessly modifying header files). This is done - by only inserting errors if the .err file is newer than the auto generated - C file. To rebuild all the error codes from scratch (the old behaviour) - either modify crypto/Makefile.ssl to pass the -regen flag to err_code.pl - or delete all the .err files. - [Steve Henson] - - *) CAST-128 was incorrectly implemented for short keys. The C version has - been fixed, but is untested. The assembler versions are also fixed, but - new assembler HAS NOT BEEN GENERATED FOR WIN32 - the Makefile needs fixing - to regenerate it if needed. - [Ben Laurie, reported (with fix for C version) by Jun-ichiro itojun - Hagino <itojun@kame.net>] - - *) File was opened incorrectly in randfile.c. - [Ulf Möller <ulf@fitug.de>] - - *) Beginning of support for GeneralizedTime. d2i, i2d, check and print - functions. Also ASN1_TIME suite which is a CHOICE of UTCTime or - GeneralizedTime. ASN1_TIME is the proper type used in certificates et - al: it's just almost always a UTCTime. Note this patch adds new error - codes so do a "make errors" if there are problems. - [Steve Henson] - - *) Correct Linux 1 recognition in config. - [Ulf Möller <ulf@fitug.de>] - - *) Remove pointless MD5 hash when using DSA keys in ca. - [Anonymous <nobody@replay.com>] - - *) Generate an error if given an empty string as a cert directory. Also - generate an error if handed NULL (previously returned 0 to indicate an - error, but didn't set one). - [Ben Laurie, reported by Anonymous <nobody@replay.com>] - - *) Add prototypes to SSL methods. Make SSL_write's buffer const, at last. - [Ben Laurie] - - *) Fix the dummy function BN_ref_mod_exp() in rsaref.c to have the correct - parameters. This was causing a warning which killed off the Win32 compile. - [Steve Henson] - - *) Remove C++ style comments from crypto/bn/bn_local.h. - [Neil Costigan <neil.costigan@celocom.com>] - - *) The function OBJ_txt2nid was broken. It was supposed to return a nid - based on a text string, looking up short and long names and finally - "dot" format. The "dot" format stuff didn't work. Added new function - OBJ_txt2obj to do the same but return an ASN1_OBJECT and rewrote - OBJ_txt2nid to use it. OBJ_txt2obj can also return objects even if the - OID is not part of the table. - [Steve Henson] - - *) Add prototypes to X509 lookup/verify methods, fixing a bug in - X509_LOOKUP_by_alias(). - [Ben Laurie] - - *) Sort openssl functions by name. - [Ben Laurie] - - *) Get the gendsa program working (hopefully) and add it to app list. Remove - encryption from sample DSA keys (in case anyone is interested the password - was "1234"). - [Steve Henson] - - *) Make _all_ *_free functions accept a NULL pointer. - [Frans Heymans <fheymans@isaserver.be>] - - *) If a DH key is generated in s3_srvr.c, don't blow it by trying to use - NULL pointers. - [Anonymous <nobody@replay.com>] - - *) s_server should send the CAfile as acceptable CAs, not its own cert. - [Bodo Moeller <3moeller@informatik.uni-hamburg.de>] - - *) Don't blow it for numeric -newkey arguments to apps/req. - [Bodo Moeller <3moeller@informatik.uni-hamburg.de>] - - *) Temp key "for export" tests were wrong in s3_srvr.c. - [Anonymous <nobody@replay.com>] - - *) Add prototype for temp key callback functions - SSL_CTX_set_tmp_{rsa,dh}_callback(). - [Ben Laurie] - - *) Make DH_free() tolerate being passed a NULL pointer (like RSA_free() and - DSA_free()). Make X509_PUBKEY_set() check for errors in d2i_PublicKey(). - [Steve Henson] - - *) X509_name_add_entry() freed the wrong thing after an error. - [Arne Ansper <arne@ats.cyber.ee>] - - *) rsa_eay.c would attempt to free a NULL context. - [Arne Ansper <arne@ats.cyber.ee>] - - *) BIO_s_socket() had a broken should_retry() on Windoze. - [Arne Ansper <arne@ats.cyber.ee>] - - *) BIO_f_buffer() didn't pass on BIO_CTRL_FLUSH. - [Arne Ansper <arne@ats.cyber.ee>] - - *) Make sure the already existing X509_STORE->depth variable is initialized - in X509_STORE_new(), but document the fact that this variable is still - unused in the certificate verification process. - [Ralf S. Engelschall] - - *) Fix the various library and apps files to free up pkeys obtained from - X509_PUBKEY_get() et al. Also allow x509.c to handle netscape extensions. - [Steve Henson] - - *) Fix reference counting in X509_PUBKEY_get(). This makes - demos/maurice/example2.c work, amongst others, probably. - [Steve Henson and Ben Laurie] - - *) First cut of a cleanup for apps/. First the `ssleay' program is now named - `openssl' and second, the shortcut symlinks for the `openssl <command>' - are no longer created. This way we have a single and consistent command - line interface `openssl <command>', similar to `cvs <command>'. - [Ralf S. Engelschall, Paul Sutton and Ben Laurie] - - *) ca.c: move test for DSA keys inside #ifndef NO_DSA. Make pubkey - BIT STRING wrapper always have zero unused bits. - [Steve Henson] - - *) Add CA.pl, perl version of CA.sh, add extended key usage OID. - [Steve Henson] - - *) Make the top-level INSTALL documentation easier to understand. - [Paul Sutton] - - *) Makefiles updated to exit if an error occurs in a sub-directory - make (including if user presses ^C) [Paul Sutton] - - *) Make Montgomery context stuff explicit in RSA data structure. - [Ben Laurie] - - *) Fix build order of pem and err to allow for generated pem.h. - [Ben Laurie] - - *) Fix renumbering bug in X509_NAME_delete_entry(). - [Ben Laurie] - - *) Enhanced the err-ins.pl script so it makes the error library number - global and can add a library name. This is needed for external ASN1 and - other error libraries. - [Steve Henson] - - *) Fixed sk_insert which never worked properly. - [Steve Henson] - - *) Fix ASN1 macros so they can handle indefinite length constructed - EXPLICIT tags. Some non standard certificates use these: they can now - be read in. - [Steve Henson] - - *) Merged the various old/obsolete SSLeay documentation files (doc/xxx.doc) - into a single doc/ssleay.txt bundle. This way the information is still - preserved but no longer messes up this directory. Now it's new room for - the new set of documentation files. - [Ralf S. Engelschall] - - *) SETs were incorrectly DER encoded. This was a major pain, because they - shared code with SEQUENCEs, which aren't coded the same. This means that - almost everything to do with SETs or SEQUENCEs has either changed name or - number of arguments. - [Ben Laurie, based on a partial fix by GP Jayan <gp@nsj.co.jp>] - - *) Fix test data to work with the above. - [Ben Laurie] - - *) Fix the RSA header declarations that hid a bug I fixed in 0.9.0b but - was already fixed by Eric for 0.9.1 it seems. - [Ben Laurie - pointed out by Ulf Möller <ulf@fitug.de>] - - *) Autodetect FreeBSD3. - [Ben Laurie] - - *) Fix various bugs in Configure. This affects the following platforms: - nextstep - ncr-scde - unixware-2.0 - unixware-2.0-pentium - sco5-cc. - [Ben Laurie] - - *) Eliminate generated files from CVS. Reorder tests to regenerate files - before they are needed. - [Ben Laurie] - - *) Generate Makefile.ssl from Makefile.org (to keep CVS happy). - [Ben Laurie] - - - Changes between 0.9.1b and 0.9.1c [23-Dec-1998] - - *) Added OPENSSL_VERSION_NUMBER to crypto/crypto.h and - changed SSLeay to OpenSSL in version strings. - [Ralf S. Engelschall] - - *) Some fixups to the top-level documents. - [Paul Sutton] - - *) Fixed the nasty bug where rsaref.h was not found under compile-time - because the symlink to include/ was missing. - [Ralf S. Engelschall] - - *) Incorporated the popular no-RSA/DSA-only patches - which allow to compile a RSA-free SSLeay. - [Andrew Cooke / Interrader Ldt., Ralf S. Engelschall] - - *) Fixed nasty rehash problem under `make -f Makefile.ssl links' - when "ssleay" is still not found. - [Ralf S. Engelschall] - - *) Added more platforms to Configure: Cray T3E, HPUX 11, - [Ralf S. Engelschall, Beckmann <beckman@acl.lanl.gov>] - - *) Updated the README file. - [Ralf S. Engelschall] - - *) Added various .cvsignore files in the CVS repository subdirs - to make a "cvs update" really silent. - [Ralf S. Engelschall] - - *) Recompiled the error-definition header files and added - missing symbols to the Win32 linker tables. - [Ralf S. Engelschall] - - *) Cleaned up the top-level documents; - o new files: CHANGES and LICENSE - o merged VERSION, HISTORY* and README* files a CHANGES.SSLeay - o merged COPYRIGHT into LICENSE - o removed obsolete TODO file - o renamed MICROSOFT to INSTALL.W32 - [Ralf S. Engelschall] - - *) Removed dummy files from the 0.9.1b source tree: - crypto/asn1/x crypto/bio/cd crypto/bio/fg crypto/bio/grep crypto/bio/vi - crypto/bn/asm/......add.c crypto/bn/asm/a.out crypto/dsa/f crypto/md5/f - crypto/pem/gmon.out crypto/perlasm/f crypto/pkcs7/build crypto/rsa/f - crypto/sha/asm/f crypto/threads/f ms/zzz ssl/f ssl/f.mak test/f - util/f.mak util/pl/f util/pl/f.mak crypto/bf/bf_locl.old apps/f - [Ralf S. Engelschall] - - *) Added various platform portability fixes. - [Mark J. Cox] - - *) The Genesis of the OpenSSL rpject: - We start with the latest (unreleased) SSLeay version 0.9.1b which Eric A. - Young and Tim J. Hudson created while they were working for C2Net until - summer 1998. - [The OpenSSL Project] - - - Changes between 0.9.0b and 0.9.1b [not released] - - *) Updated a few CA certificates under certs/ - [Eric A. Young] - - *) Changed some BIGNUM api stuff. - [Eric A. Young] - - *) Various platform ports: OpenBSD, Ultrix, IRIX 64bit, NetBSD, - DGUX x86, Linux Alpha, etc. - [Eric A. Young] - - *) New COMP library [crypto/comp/] for SSL Record Layer Compression: - RLE (dummy implemented) and ZLIB (really implemented when ZLIB is - available). - [Eric A. Young] - - *) Add -strparse option to asn1pars program which parses nested - binary structures - [Dr Stephen Henson <shenson@bigfoot.com>] - - *) Added "oid_file" to ssleay.cnf for "ca" and "req" programs. - [Eric A. Young] - - *) DSA fix for "ca" program. - [Eric A. Young] - - *) Added "-genkey" option to "dsaparam" program. - [Eric A. Young] - - *) Added RIPE MD160 (rmd160) message digest. - [Eric A. Young] - - *) Added -a (all) option to "ssleay version" command. - [Eric A. Young] - - *) Added PLATFORM define which is the id given to Configure. - [Eric A. Young] - - *) Added MemCheck_XXXX functions to crypto/mem.c for memory checking. - [Eric A. Young] - - *) Extended the ASN.1 parser routines. - [Eric A. Young] - - *) Extended BIO routines to support REUSEADDR, seek, tell, etc. - [Eric A. Young] - - *) Added a BN_CTX to the BN library. - [Eric A. Young] - - *) Fixed the weak key values in DES library - [Eric A. Young] - - *) Changed API in EVP library for cipher aliases. - [Eric A. Young] - - *) Added support for RC2/64bit cipher. - [Eric A. Young] - - *) Converted the lhash library to the crypto/mem.c functions. - [Eric A. Young] - - *) Added more recognized ASN.1 object ids. - [Eric A. Young] - - *) Added more RSA padding checks for SSL/TLS. - [Eric A. Young] - - *) Added BIO proxy/filter functionality. - [Eric A. Young] - - *) Added extra_certs to SSL_CTX which can be used - send extra CA certificates to the client in the CA cert chain sending - process. It can be configured with SSL_CTX_add_extra_chain_cert(). - [Eric A. Young] - - *) Now Fortezza is denied in the authentication phase because - this is key exchange mechanism is not supported by SSLeay at all. - [Eric A. Young] - - *) Additional PKCS1 checks. - [Eric A. Young] - - *) Support the string "TLSv1" for all TLS v1 ciphers. - [Eric A. Young] - - *) Added function SSL_get_ex_data_X509_STORE_CTX_idx() which gives the - ex_data index of the SSL context in the X509_STORE_CTX ex_data. - [Eric A. Young] - - *) Fixed a few memory leaks. - [Eric A. Young] - - *) Fixed various code and comment typos. - [Eric A. Young] - - *) A minor bug in ssl/s3_clnt.c where there would always be 4 0 - bytes sent in the client random. - [Edward Bishop <ebishop@spyglass.com>] |