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diff --git a/crypto/krb5/doc/html/_sources/mitK5features.rst.txt b/crypto/krb5/doc/html/_sources/mitK5features.rst.txt deleted file mode 100644 index e260e8e08343..000000000000 --- a/crypto/krb5/doc/html/_sources/mitK5features.rst.txt +++ /dev/null @@ -1,762 +0,0 @@ -.. highlight:: rst - -.. toctree:: - :hidden: - - mitK5license.rst - -.. _mitK5features: - -MIT Kerberos features -===================== - -https://web.mit.edu/kerberos - - -Quick facts ------------ - -License - :ref:`mitK5license` - -Releases: - - Latest stable: https://web.mit.edu/kerberos/krb5-1.22/ - - Supported: https://web.mit.edu/kerberos/krb5-1.21/ - - Release cycle: approximately 12 months - -Supported platforms \/ OS distributions: - - Windows (KfW 4.0): Windows 7, Vista, XP - - Solaris: SPARC, x86_64/x86 - - GNU/Linux: Debian x86_64/x86, Ubuntu x86_64/x86, RedHat x86_64/x86 - - BSD: NetBSD x86_64/x86 - -Crypto backends: - - builtin - MIT Kerberos native crypto library - - OpenSSL (1.0\+) - https://www.openssl.org - -Database backends: LDAP, DB2, LMDB - -krb4 support: Kerberos 5 release < 1.8 - -DES support: Kerberos 5 release < 1.18 (See :ref:`retiring-des`) - -Interoperability ----------------- - -`Microsoft` - -Starting from release 1.7: - -* Follow client principal referrals in the client library when - obtaining initial tickets. - -* KDC can issue realm referrals for service principals based on domain names. - -* Extensions supporting DCE RPC, including three-leg GSS context setup - and unencapsulated GSS tokens inside SPNEGO. - -* Microsoft GSS_WrapEX, implemented using the gss_iov API, which is - similar to the equivalent SSPI functionality. This is needed to - support some instances of DCE RPC. - -* NTLM recognition support in GSS-API, to facilitate dropping in an - NTLM implementation for improved compatibility with older releases - of Microsoft Windows. - -* KDC support for principal aliases, if the back end supports them. - Currently, only the LDAP back end supports aliases. - -* Support Microsoft set/change password (:rfc:`3244`) protocol in - kadmind. - -* Implement client and KDC support for GSS_C_DELEG_POLICY_FLAG, which - allows a GSS application to request credential delegation only if - permitted by KDC policy. - - -Starting from release 1.8: - -* Microsoft Services for User (S4U) compatibility - - -`Heimdal` - -* Support for KCM credential cache starting from release 1.13 - -Feature list ------------- - -For more information on the specific project see https://k5wiki.kerberos.org/wiki/Projects - -Release 1.7 - - Credentials delegation :rfc:`5896` - - Cross-realm authentication and referrals :rfc:`6806` - - Master key migration - - PKINIT :rfc:`4556` :ref:`pkinit` - -Release 1.8 - - Anonymous PKINIT :rfc:`6112` :ref:`anonymous_pkinit` - - Constrained delegation - - IAKERB https://tools.ietf.org/html/draft-ietf-krb-wg-iakerb-02 - - Heimdal bridge plugin for KDC backend - - GSS-API S4U extensions https://msdn.microsoft.com/en-us/library/cc246071 - - GSS-API naming extensions :rfc:`6680` - - GSS-API extensions for storing delegated credentials :rfc:`5588` - -Release 1.9 - - Advance warning on password expiry - - Camellia encryption (CTS-CMAC mode) :rfc:`6803` - - KDC support for SecurID preauthentication - - kadmin over IPv6 - - Trace logging :ref:`trace_logging` - - GSSAPI/KRB5 multi-realm support - - Plugin to test password quality :ref:`pwqual_plugin` - - Plugin to synchronize password changes :ref:`kadm5_hook_plugin` - - Parallel KDC - - GSS-API extensions for SASL GS2 bridge :rfc:`5801` :rfc:`5587` - - Purging old keys - - Naming extensions for delegation chain - - Password expiration API - - Windows client support (build-only) - - IPv6 support in iprop - -Release 1.10 - - Plugin interface for configuration :ref:`profile_plugin` - - Credentials for multiple identities :ref:`ccselect_plugin` - -Release 1.11 - - Client support for FAST OTP :rfc:`6560` - - GSS-API extensions for credential locations - - Responder mechanism - -Release 1.12 - - Plugin to control krb5_aname_to_localname and krb5_kuserok behavior :ref:`localauth_plugin` - - Plugin to control hostname-to-realm mappings and the default realm :ref:`hostrealm_plugin` - - GSSAPI extensions for constructing MIC tokens using IOV lists :ref:`gssapi_mic_token` - - Principal may refer to nonexistent policies `Policy Refcount project <https://k5wiki.kerberos.org/wiki/Projects/Policy_refcount_elimination>`_ - - Support for having no long-term keys for a principal `Principals Without Keys project <https://k5wiki.kerberos.org/wiki/Projects/Principals_without_keys>`_ - - Collection support to the KEYRING credential cache type on Linux :ref:`ccache_definition` - - FAST OTP preauthentication module for the KDC which uses RADIUS to validate OTP token values :ref:`otp_preauth` - - Experimental Audit plugin for KDC processing `Audit project <https://k5wiki.kerberos.org/wiki/Projects/Audit>`_ - -Release 1.13 - - - Add support for accessing KDCs via an HTTPS proxy server using - the `MS-KKDCP - <https://msdn.microsoft.com/en-us/library/hh553774.aspx>`_ - protocol. - - Add support for `hierarchical incremental propagation - <https://k5wiki.kerberos.org/wiki/Projects/Hierarchical_iprop>`_, - where replicas can act as intermediates between an upstream primary - and other downstream replicas. - - Add support for configuring GSS mechanisms using - ``/etc/gss/mech.d/*.conf`` files in addition to - ``/etc/gss/mech``. - - Add support to the LDAP KDB module for `binding to the LDAP - server using SASL - <https://k5wiki.kerberos.org/wiki/Projects/LDAP_SASL_support>`_. - - The KDC listens for TCP connections by default. - - Fix a minor key disclosure vulnerability where using the - "keepold" option to the kadmin randkey operation could return the - old keys. `[CVE-2014-5351] - <https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-5351>`_ - - Add client support for the Kerberos Cache Manager protocol. If - the host is running a Heimdal kcm daemon, caches served by the - daemon can be accessed with the KCM: cache type. - - When built on macOS 10.7 and higher, use "KCM:" as the default - cachetype, unless overridden by command-line options or - krb5-config values. - - Add support for doing unlocked database dumps for the DB2 KDC - back end, which would allow the KDC and kadmind to continue - accessing the database during lengthy database dumps. - -Release 1.14 - - * Administrator experience - - - Add a new kdb5_util tabdump command to provide reporting-friendly - tabular dump formats (tab-separated or CSV) for the KDC database. - Unlike the normal dump format, each output table has a fixed number - of fields. Some tables include human-readable forms of data that - are opaque in ordinary dump files. This format is also suitable for - importing into relational databases for complex queries. - - Add support to kadmin and kadmin.local for specifying a single - command line following any global options, where the command - arguments are split by the shell--for example, "kadmin getprinc - principalname". Commands issued this way do not prompt for - confirmation or display warning messages, and exit with non-zero - status if the operation fails. - - Accept the same principal flag names in kadmin as we do for the - default_principal_flags kdc.conf variable, and vice versa. Also - accept flag specifiers in the form that kadmin prints, as well as - hexadecimal numbers. - - Remove the triple-DES and RC4 encryption types from the default - value of supported_enctypes, which determines the default key and - salt types for new password-derived keys. By default, keys will - only created only for AES128 and AES256. This mitigates some types - of password guessing attacks. - - Add support for directory names in the KRB5_CONFIG and - KRB5_KDC_PROFILE environment variables. - - Add support for authentication indicators, which are ticket - annotations to indicate the strength of the initial authentication. - Add support for the "require_auth" string attribute, which can be - set on server principal entries to require an indicator when - authenticating to the server. - - Add support for key version numbers larger than 255 in keytab files, - and for version numbers up to 65535 in KDC databases. - - Transmit only one ETYPE-INFO and/or ETYPE-INFO2 entry from the KDC - during pre-authentication, corresponding to the client's most - preferred encryption type. - - Add support for server name identification (SNI) when proxying KDC - requests over HTTPS. - - Add support for the err_fmt profile parameter, which can be used to - generate custom-formatted error messages. - - * Developer experience: - - - Change gss_acquire_cred_with_password() to acquire credentials into - a private memory credential cache. Applications can use - gss_store_cred() to make the resulting credentials visible to other - processes. - - Change gss_acquire_cred() and SPNEGO not to acquire credentials for - IAKERB or for non-standard variants of the krb5 mechanism OID unless - explicitly requested. (SPNEGO will still accept the Microsoft - variant of the krb5 mechanism OID during negotiation.) - - Change gss_accept_sec_context() not to accept tokens for IAKERB or - for non-standard variants of the krb5 mechanism OID unless an - acceptor credential is acquired for those mechanisms. - - Change gss_acquire_cred() to immediately resolve credentials if the - time_rec parameter is not NULL, so that a correct expiration time - can be returned. Normally credential resolution is delayed until - the target name is known. - - Add krb5_prepend_error_message() and krb5_wrap_error_message() APIs, - which can be used by plugin modules or applications to add prefixes - to existing detailed error messages. - - Add krb5_c_prfplus() and krb5_c_derive_prfplus() APIs, which - implement the RFC 6113 PRF+ operation and key derivation using PRF+. - - Add support for pre-authentication mechanisms which use multiple - round trips, using the the KDC_ERR_MORE_PREAUTH_DATA_REQUIRED error - code. Add get_cookie() and set_cookie() callbacks to the kdcpreauth - interface; these callbacks can be used to save marshalled state - information in an encrypted cookie for the next request. - - Add a client_key() callback to the kdcpreauth interface to retrieve - the chosen client key, corresponding to the ETYPE-INFO2 entry sent - by the KDC. - - Add an add_auth_indicator() callback to the kdcpreauth interface, - allowing pre-authentication modules to assert authentication - indicators. - - Add support for the GSS_KRB5_CRED_NO_CI_FLAGS_X cred option to - suppress sending the confidentiality and integrity flags in GSS - initiator tokens unless they are requested by the caller. These - flags control the negotiated SASL security layer for the Microsoft - GSS-SPNEGO SASL mechanism. - - Make the FILE credential cache implementation less prone to - corruption issues in multi-threaded programs, especially on - platforms with support for open file description locks. - - * Performance: - - - On replica KDCs, poll the primary KDC immediately after - processing a full resync, and do not require two full resyncs - after the primary KDC's log file is reset. - -Release 1.15 - -* Administrator experience: - - - Add support to kadmin for remote extraction of current keys - without changing them (requires a special kadmin permission that - is excluded from the wildcard permission), with the exception of - highly protected keys. - - - Add a lockdown_keys principal attribute to prevent retrieval of - the principal's keys (old or new) via the kadmin protocol. In - newly created databases, this attribute is set on the krbtgt and - kadmin principals. - - - Restore recursive dump capability for DB2 back end, so sites can - more easily recover from database corruption resulting from power - failure events. - - - Add DNS auto-discovery of KDC and kpasswd servers from URI - records, in addition to SRV records. URI records can convey TCP - and UDP servers and primary KDC status in a single DNS lookup, and - can also point to HTTPS proxy servers. - - - Add support for password history to the LDAP back end. - - - Add support for principal renaming to the LDAP back end. - - - Use the getrandom system call on supported Linux kernels to avoid - blocking problems when getting entropy from the operating system. - -* Code quality: - - - Clean up numerous compilation warnings. - - - Remove various infrequently built modules, including some preauth - modules that were not built by default. - -* Developer experience: - - - Add support for building with OpenSSL 1.1. - - - Use SHA-256 instead of MD5 for (non-cryptographic) hashing of - authenticators in the replay cache. This helps sites that must - build with FIPS 140 conformant libraries that lack MD5. - -* Protocol evolution: - - - Add support for the AES-SHA2 enctypes, which allows sites to - conform to Suite B crypto requirements. - -Release 1.16 - -* Administrator experience: - - - The KDC can match PKINIT client certificates against the - "pkinit_cert_match" string attribute on the client principal - entry, using the same syntax as the existing "pkinit_cert_match" - profile option. - - - The ktutil addent command supports the "-k 0" option to ignore the - key version, and the "-s" option to use a non-default salt string. - - - kpropd supports a --pid-file option to write a pid file at - startup, when it is run in standalone mode. - - - The "encrypted_challenge_indicator" realm option can be used to - attach an authentication indicator to tickets obtained using FAST - encrypted challenge pre-authentication. - - - Localization support can be disabled at build time with the - --disable-nls configure option. - -* Developer experience: - - - The kdcpolicy pluggable interface allows modules control whether - tickets are issued by the KDC. - - - The kadm5_auth pluggable interface allows modules to control - whether kadmind grants access to a kadmin request. - - - The certauth pluggable interface allows modules to control which - PKINIT client certificates can authenticate to which client - principals. - - - KDB modules can use the client and KDC interface IP addresses to - determine whether to allow an AS request. - - - GSS applications can query the bit strength of a krb5 GSS context - using the GSS_C_SEC_CONTEXT_SASL_SSF OID with - gss_inquire_sec_context_by_oid(). - - - GSS applications can query the impersonator name of a krb5 GSS - credential using the GSS_KRB5_GET_CRED_IMPERSONATOR OID with - gss_inquire_cred_by_oid(). - - - kdcpreauth modules can query the KDC for the canonicalized - requested client principal name, or match a principal name against - the requested client principal name with canonicalization. - -* Protocol evolution: - - - The client library will continue to try pre-authentication - mechanisms after most failure conditions. - - - The KDC will issue trivially renewable tickets (where the - renewable lifetime is equal to or less than the ticket lifetime) - if requested by the client, to be friendlier to scripts. - - - The client library will use a random nonce for TGS requests - instead of the current system time. - - - For the RC4 string-to-key or PAC operations, UTF-16 is supported - (previously only UCS-2 was supported). - - - When matching PKINIT client certificates, UPN SANs will be matched - correctly as UPNs, with canonicalization. - -* User experience: - - - Dates after the year 2038 are accepted (provided that the platform - time facilities support them), through the year 2106. - - - Automatic credential cache selection based on the client realm - will take into account the fallback realm and the service - hostname. - - - Referral and alternate cross-realm TGTs will not be cached, - avoiding some scenarios where they can be added to the credential - cache multiple times. - - - A German translation has been added. - -* Code quality: - - - The build is warning-clean under clang with the configured warning - options. - - - The automated test suite runs cleanly under AddressSanitizer. - -Release 1.17 - -* Administrator experience: - - - A new Kerberos database module using the Lightning Memory-Mapped - Database library (LMDB) has been added. The LMDB KDB module - should be more performant and more robust than the DB2 module, and - may become the default module for new databases in a future - release. - - - "kdb5_util dump" will no longer dump policy entries when specific - principal names are requested. - -* Developer experience: - - - The new krb5_get_etype_info() API can be used to retrieve enctype, - salt, and string-to-key parameters from the KDC for a client - principal. - - - The new GSS_KRB5_NT_ENTERPRISE_NAME name type allows enterprise - principal names to be used with GSS-API functions. - - - KDC and kadmind modules which call com_err() will now write to the - log file in a format more consistent with other log messages. - - - Programs which use large numbers of memory credential caches - should perform better. - -* Protocol evolution: - - - The SPAKE pre-authentication mechanism is now supported. This - mechanism protects against password dictionary attacks without - requiring any additional infrastructure such as certificates. - SPAKE is enabled by default on clients, but must be manually - enabled on the KDC for this release. - - - PKINIT freshness tokens are now supported. Freshness tokens can - protect against scenarios where an attacker uses temporary access - to a smart card to generate authentication requests for the - future. - - - Password change operations now prefer TCP over UDP, to avoid - spurious error messages about replays when a response packet is - dropped. - - - The KDC now supports cross-realm S4U2Self requests when used with - a third-party KDB module such as Samba's. The client code for - cross-realm S4U2Self requests is also now more robust. - -* User experience: - - - The new ktutil addent -f flag can be used to fetch salt - information from the KDC for password-based keys. - - - The new kdestroy -p option can be used to destroy a credential - cache within a collection by client principal name. - - - The Kerberos man page has been restored, and documents the - environment variables that affect programs using the Kerberos - library. - -* Code quality: - - - Python test scripts now use Python 3. - - - Python test scripts now display markers in verbose output, making - it easier to find where a failure occurred within the scripts. - - - The Windows build system has been simplified and updated to work - with more recent versions of Visual Studio. A large volume of - unused Windows-specific code has been removed. Visual Studio 2013 - or later is now required. - -Release 1.18 - -* Administrator experience: - - - Remove support for single-DES encryption types. - - - Change the replay cache format to be more efficient and robust. - Replay cache filenames using the new format end with ``.rcache2`` - by default. - - - setuid programs will automatically ignore environment variables - that normally affect krb5 API functions, even if the caller does - not use krb5_init_secure_context(). - - - Add an ``enforce_ok_as_delegate`` krb5.conf relation to disable - credential forwarding during GSSAPI authentication unless the KDC - sets the ok-as-delegate bit in the service ticket. - -* Developer experience: - - - Implement krb5_cc_remove_cred() for all credential cache types. - - - Add the krb5_pac_get_client_info() API to get the client account - name from a PAC. - -* Protocol evolution: - - - Add KDC support for S4U2Self requests where the user is identified - by X.509 certificate. (Requires support for certificate lookup - from a third-party KDB module.) - - - Remove support for an old ("draft 9") variant of PKINIT. - - - Add support for Microsoft NegoEx. (Requires one or more - third-party GSS modules implementing NegoEx mechanisms.) - -* User experience: - - - Add support for ``dns_canonicalize_hostname=fallback``, causing - host-based principal names to be tried first without DNS - canonicalization, and again with DNS canonicalization if the - un-canonicalized server is not found. - - - Expand single-component hostnames in hhost-based principal names - when DNS canonicalization is not used, adding the system's first - DNS search path as a suffix. Add a ``qualify_shortname`` - krb5.conf relation to override this suffix or disable expansion. - -* Code quality: - - - The libkrb5 serialization code (used to export and import krb5 GSS - security contexts) has been simplified and made type-safe. - - - The libkrb5 code for creating KRB-PRIV, KRB-SAFE, and KRB-CRED - messages has been revised to conform to current coding practices. - - - The test suite has been modified to work with macOS System - Integrity Protection enabled. - - - The test suite incorporates soft-pkcs11 so that PKINIT PKCS11 - support can always be tested. - -Release 1.19 - -* Administrator experience: - - - When a client keytab is present, the GSSAPI krb5 mech will refresh - credentials even if the current credentials were acquired - manually. - - - It is now harder to accidentally delete the K/M entry from a KDB. - -* Developer experience: - - - gss_acquire_cred_from() now supports the "password" and "verify" - options, allowing credentials to be acquired via password and - verified using a keytab key. - - - When an application accepts a GSS security context, the new - GSS_C_CHANNEL_BOUND_FLAG will be set if the initiator and acceptor - both provided matching channel bindings. - - - Added the GSS_KRB5_NT_X509_CERT name type, allowing S4U2Self - requests to identify the desired client principal by certificate. - - - PKINIT certauth modules can now cause the hw-authent flag to be - set in issued tickets. - - - The krb5_init_creds_step() API will now issue the same password - expiration warnings as krb5_get_init_creds_password(). - -* Protocol evolution: - - - Added client and KDC support for Microsoft's Resource-Based - Constrained Delegation, which allows cross-realm S4U2Proxy - requests. A third-party database module is required for KDC - support. - - - kadmin/admin is now the preferred server principal name for kadmin - connections, and the host-based form is no longer created by - default. The client will still try the host-based form as a - fallback. - - - Added client and server support for Microsoft's - KERB_AP_OPTIONS_CBT extension, which causes channel bindings to be - required for the initiator if the acceptor provided them. The - client will send this option if the client_aware_gss_bindings - profile option is set. - -User experience: - - - The default setting of dns_canonicalize_realm is now "fallback". - Hostnames provided from applications will be tried in principal - names as given (possibly with shortname qualification), falling - back to the canonicalized name. - - - kinit will now issue a warning if the des3-cbc-sha1 encryption - type is used in the reply. This encryption type will be - deprecated and removed in future releases. - - - Added kvno flags --out-cache, --no-store, and --cached-only - (inspired by Heimdal's kgetcred). - -Release 1.20 - -* Administrator experience: - - - Added a "disable_pac" realm relation to suppress adding PAC - authdata to tickets, for realms which do not need to support S4U - requests. - - - Most credential cache types will use atomic replacement when a - cache is reinitialized using kinit or refreshed from the client - keytab. - - - kprop can now propagate databases with a dump size larger than - 4GB, if both the client and server are upgraded. - - - kprop can now work over NATs that change the destination IP - address, if the client is upgraded. - -* Developer experience: - - - Updated the KDB interface. The sign_authdata() method is replaced - with the issue_pac() method, allowing KDB modules to add logon - info and other buffers to the PAC issued by the KDC. - - - Host-based initiator names are better supported in the GSS krb5 - mechanism. - -* Protocol evolution: - - - Replaced AD-SIGNEDPATH authdata with minimal PACs. - - - To avoid spurious replay errors, password change requests will not - be attempted over UDP until the attempt over TCP fails. - - - PKINIT will sign its CMS messages with SHA-256 instead of SHA-1. - -* Code quality: - - - Updated all code using OpenSSL to be compatible with OpenSSL 3. - - - Reorganized the libk5crypto build system to allow the OpenSSL - back-end to pull in material from the builtin back-end depending - on the OpenSSL version. - - - Simplified the PRNG logic to always use the platform PRNG. - - - Converted the remaining Tcl tests to Python. - -Release 1.21 - -* User experience: - - - Added a credential cache type providing compatibility with the - macOS 11 native credential cache. - -* Developer experience: - - - libkadm5 will use the provided krb5_context object to read - configuration values, instead of creating its own. - - - Added an interface to retrieve the ticket session key from a GSS - context. - -* Protocol evolution: - - - The KDC will no longer issue tickets with RC4 or triple-DES - session keys unless explicitly configured with the new allow_rc4 - or allow_des3 variables respectively. - - - The KDC will assume that all services can handle aes256-sha1 - session keys unless the service principal has a session_enctypes - string attribute. - - - Support for PAC full KDC checksums has been added to mitigate an - S4U2Proxy privilege escalation attack. - - - The PKINIT client will advertise a more modern set of supported - CMS algorithms. - -* Code quality: - - - Removed unused code in libkrb5, libkrb5support, and the PKINIT - module. - - - Modernized the KDC code for processing TGS requests, the code for - encrypting and decrypting key data, the PAC handling code, and the - GSS library packet parsing and composition code. - - - Improved the test framework's detection of memory errors in daemon - processes when used with asan. - -Release 1.22 - -* User experience: - - - The libdefaults configuration variable "request_timeout" can be - set to limit the total timeout for KDC requests. When making a - KDC request, the client will now wait indefinitely (or until the - request timeout has elapsed) on a KDC which accepts a TCP - connection, without contacting any additional KDCs. Clients will - make fewer DNS queries in some configurations. - - - The realm configuration variable "sitename" can be set to cause - the client to query site-specific DNS records when making KDC - requests. - -* Administrator experience: - - - Principal aliases are supported in the DB2 and LMDB KDB modules - and in the kadmin protocol. (The LDAP KDB module has supported - aliases since release 1.7.) - - - UNIX domain sockets are supported for the Kerberos and kpasswd - protocols. - - - systemd socket activation is supported for krb5kdc and kadmind. - -* Developer experience: - - - KDB modules can be be implemented in terms of other modules using - the new krb5_db_load_module() function. - - - The profile library supports the modification of empty profiles - and the copying of modified profiles, making it possible to - construct an in-memory profile and pass it to - krb5_init_context_profile(). - - - GSS-API applications can pass the GSS_C_CHANNEL_BOUND flag to - gss_init_sec_context() to request strict enforcement of channel - bindings by the acceptor. - -* Protocol evolution: - - - The PKINIT preauth module supports elliptic curve client - certificates, ECDH key exchange, and the Microsoft paChecksum2 - field. - - - The IAKERB implementation has been changed to comply with the most - recent draft standard and to support realm discovery. - - - Message-Authenticator is supported in the RADIUS implementation - used by the OTP kdcpreauth module. - -* Code quality: - - - Removed old-style function declarations, to accomodate compilers - which have removed support for them. - - - Added OSS-Fuzz to the project's continuous integration - infrastructure. - - - Rewrote the GSS per-message token parsing code for improved - safety. - -`Pre-authentication mechanisms` - -- PW-SALT :rfc:`4120#section-5.2.7.3` -- ENC-TIMESTAMP :rfc:`4120#section-5.2.7.2` -- SAM-2 -- FAST negotiation framework (release 1.8) :rfc:`6113` -- PKINIT with FAST on client (release 1.10) :rfc:`6113` -- PKINIT :rfc:`4556` -- FX-COOKIE :rfc:`6113#section-5.2` -- S4U-X509-USER (release 1.8) https://msdn.microsoft.com/en-us/library/cc246091 -- OTP (release 1.12) :ref:`otp_preauth` -- SPAKE (release 1.17) :ref:`spake` |