diff options
Diffstat (limited to 'secure/lib/libcrypto/man/man3/EVP_VerifyInit.3')
| -rw-r--r-- | secure/lib/libcrypto/man/man3/EVP_VerifyInit.3 | 165 |
1 files changed, 55 insertions, 110 deletions
diff --git a/secure/lib/libcrypto/man/man3/EVP_VerifyInit.3 b/secure/lib/libcrypto/man/man3/EVP_VerifyInit.3 index 66950e8013f6..7f46acb913d1 100644 --- a/secure/lib/libcrypto/man/man3/EVP_VerifyInit.3 +++ b/secure/lib/libcrypto/man/man3/EVP_VerifyInit.3 @@ -1,4 +1,5 @@ -.\" Automatically generated by Pod::Man 4.14 (Pod::Simple 3.40) +.\" -*- mode: troff; coding: utf-8 -*- +.\" Automatically generated by Pod::Man v6.0.2 (Pod::Simple 3.45) .\" .\" Standard preamble: .\" ======================================================================== @@ -15,29 +16,12 @@ .ft R .fi .. -.\" Set up some character translations and predefined strings. \*(-- will -.\" give an unbreakable dash, \*(PI will give pi, \*(L" will give a left -.\" double quote, and \*(R" will give a right double quote. \*(C+ will -.\" give a nicer C++. Capital omega is used to do unbreakable dashes and -.\" therefore won't be available. \*(C` and \*(C' expand to `' in nroff, -.\" nothing in troff, for use with C<>. -.tr \(*W- -.ds C+ C\v'-.1v'\h'-1p'\s-2+\h'-1p'+\s0\v'.1v'\h'-1p' +.\" \*(C` and \*(C' are quotes in nroff, nothing in troff, for use with C<>. .ie n \{\ -. ds -- \(*W- -. ds PI pi -. if (\n(.H=4u)&(1m=24u) .ds -- \(*W\h'-12u'\(*W\h'-12u'-\" diablo 10 pitch -. if (\n(.H=4u)&(1m=20u) .ds -- \(*W\h'-12u'\(*W\h'-8u'-\" diablo 12 pitch -. ds L" "" -. ds R" "" . ds C` "" . ds C' "" 'br\} .el\{\ -. ds -- \|\(em\| -. ds PI \(*p -. ds L" `` -. ds R" '' . ds C` . ds C' 'br\} @@ -69,130 +53,88 @@ .\} .rr rF .\" -.\" Accent mark definitions (@(#)ms.acc 1.5 88/02/08 SMI; from UCB 4.2). -.\" Fear. Run. Save yourself. No user-serviceable parts. -. \" fudge factors for nroff and troff -.if n \{\ -. ds #H 0 -. ds #V .8m -. ds #F .3m -. ds #[ \f1 -. ds #] \fP -.\} -.if t \{\ -. ds #H ((1u-(\\\\n(.fu%2u))*.13m) -. ds #V .6m -. ds #F 0 -. ds #[ \& -. ds #] \& -.\} -. \" simple accents for nroff and troff -.if n \{\ -. ds ' \& -. ds ` \& -. ds ^ \& -. ds , \& -. ds ~ ~ -. ds / -.\} -.if t \{\ -. ds ' \\k:\h'-(\\n(.wu*8/10-\*(#H)'\'\h"|\\n:u" -. ds ` \\k:\h'-(\\n(.wu*8/10-\*(#H)'\`\h'|\\n:u' -. ds ^ \\k:\h'-(\\n(.wu*10/11-\*(#H)'^\h'|\\n:u' -. ds , \\k:\h'-(\\n(.wu*8/10)',\h'|\\n:u' -. ds ~ \\k:\h'-(\\n(.wu-\*(#H-.1m)'~\h'|\\n:u' -. ds / \\k:\h'-(\\n(.wu*8/10-\*(#H)'\z\(sl\h'|\\n:u' -.\} -. \" troff and (daisy-wheel) nroff accents -.ds : \\k:\h'-(\\n(.wu*8/10-\*(#H+.1m+\*(#F)'\v'-\*(#V'\z.\h'.2m+\*(#F'.\h'|\\n:u'\v'\*(#V' -.ds 8 \h'\*(#H'\(*b\h'-\*(#H' -.ds o \\k:\h'-(\\n(.wu+\w'\(de'u-\*(#H)/2u'\v'-.3n'\*(#[\z\(de\v'.3n'\h'|\\n:u'\*(#] -.ds d- \h'\*(#H'\(pd\h'-\w'~'u'\v'-.25m'\f2\(hy\fP\v'.25m'\h'-\*(#H' -.ds D- D\\k:\h'-\w'D'u'\v'-.11m'\z\(hy\v'.11m'\h'|\\n:u' -.ds th \*(#[\v'.3m'\s+1I\s-1\v'-.3m'\h'-(\w'I'u*2/3)'\s-1o\s+1\*(#] -.ds Th \*(#[\s+2I\s-2\h'-\w'I'u*3/5'\v'-.3m'o\v'.3m'\*(#] -.ds ae a\h'-(\w'a'u*4/10)'e -.ds Ae A\h'-(\w'A'u*4/10)'E -. \" corrections for vroff -.if v .ds ~ \\k:\h'-(\\n(.wu*9/10-\*(#H)'\s-2\u~\d\s+2\h'|\\n:u' -.if v .ds ^ \\k:\h'-(\\n(.wu*10/11-\*(#H)'\v'-.4m'^\v'.4m'\h'|\\n:u' -. \" for low resolution devices (crt and lpr) -.if \n(.H>23 .if \n(.V>19 \ -\{\ -. ds : e -. ds 8 ss -. ds o a -. ds d- d\h'-1'\(ga -. ds D- D\h'-1'\(hy -. ds th \o'bp' -. ds Th \o'LP' -. ds ae ae -. ds Ae AE -.\} -.rm #[ #] #H #V #F C +.\" Required to disable full justification in groff 1.23.0. +.if n .ds AD l .\" ======================================================================== .\" -.IX Title "EVP_VERIFYINIT 3" -.TH EVP_VERIFYINIT 3 "2022-07-05" "1.1.1q" "OpenSSL" +.IX Title "EVP_VERIFYINIT 3ossl" +.TH EVP_VERIFYINIT 3ossl 2026-04-07 3.5.6 OpenSSL .\" For nroff, turn off justification. Always turn off hyphenation; it makes .\" way too many mistakes in technical documents. .if n .ad l .nh -.SH "NAME" -EVP_VerifyInit_ex, EVP_VerifyInit, EVP_VerifyUpdate, EVP_VerifyFinal \&\- EVP signature verification functions -.SH "SYNOPSIS" +.SH NAME +EVP_VerifyInit_ex, +EVP_VerifyInit, EVP_VerifyUpdate, EVP_VerifyFinal_ex, EVP_VerifyFinal +\&\- EVP signature verification functions +.SH SYNOPSIS .IX Header "SYNOPSIS" .Vb 1 \& #include <openssl/evp.h> \& \& int EVP_VerifyInit_ex(EVP_MD_CTX *ctx, const EVP_MD *type, ENGINE *impl); \& int EVP_VerifyUpdate(EVP_MD_CTX *ctx, const void *d, unsigned int cnt); +\& int EVP_VerifyFinal_ex(EVP_MD_CTX *ctx, const unsigned char *sigbuf, +\& unsigned int siglen, EVP_PKEY *pkey, +\& OSSL_LIB_CTX *libctx, const char *propq); \& int EVP_VerifyFinal(EVP_MD_CTX *ctx, unsigned char *sigbuf, unsigned int siglen, \& EVP_PKEY *pkey); \& \& int EVP_VerifyInit(EVP_MD_CTX *ctx, const EVP_MD *type); .Ve -.SH "DESCRIPTION" +.SH DESCRIPTION .IX Header "DESCRIPTION" -The \s-1EVP\s0 signature verification routines are a high-level interface to digital +The EVP signature verification routines are a high\-level interface to digital signatures. .PP -\&\fBEVP_VerifyInit_ex()\fR sets up verification context \fBctx\fR to use digest -\&\fBtype\fR from \s-1ENGINE\s0 \fBimpl\fR. \fBctx\fR must be created by calling +\&\fBEVP_VerifyInit_ex()\fR sets up verification context \fIctx\fR to use digest +\&\fItype\fR from ENGINE \fIimpl\fR. \fIctx\fR must be created by calling \&\fBEVP_MD_CTX_new()\fR before calling this function. .PP -\&\fBEVP_VerifyUpdate()\fR hashes \fBcnt\fR bytes of data at \fBd\fR into the -verification context \fBctx\fR. This function can be called several times on the -same \fBctx\fR to include additional data. +\&\fBEVP_VerifyUpdate()\fR hashes \fIcnt\fR bytes of data at \fId\fR into the +verification context \fIctx\fR. This function can be called several times on the +same \fIctx\fR to include additional data. +.PP +\&\fBEVP_VerifyFinal_ex()\fR verifies the data in \fIctx\fR using the public key +\&\fIpkey\fR and \fIsiglen\fR bytes in \fIsigbuf\fR. +The library context \fIlibctx\fR and property query \fIpropq\fR are used when creating +a context to use with the key \fIpkey\fR. .PP -\&\fBEVP_VerifyFinal()\fR verifies the data in \fBctx\fR using the public key \fBpkey\fR -and against the \fBsiglen\fR bytes at \fBsigbuf\fR. +\&\fBEVP_VerifyFinal()\fR is similar to \fBEVP_VerifyFinal_ex()\fR but uses default +values of NULL for the library context \fIlibctx\fR and the property query \fIpropq\fR. .PP -\&\fBEVP_VerifyInit()\fR initializes verification context \fBctx\fR to use the default -implementation of digest \fBtype\fR. +\&\fBEVP_VerifyInit()\fR initializes verification context \fIctx\fR to use the default +implementation of digest \fItype\fR. .SH "RETURN VALUES" .IX Header "RETURN VALUES" \&\fBEVP_VerifyInit_ex()\fR and \fBEVP_VerifyUpdate()\fR return 1 for success and 0 for failure. .PP -\&\fBEVP_VerifyFinal()\fR returns 1 for a correct signature, 0 for failure and \-1 if some -other error occurred. +\&\fBEVP_VerifyFinal_ex()\fR and \fBEVP_VerifyFinal()\fR return 1 for a correct +signature, 0 for failure and a negative value if some other error occurred. .PP The error codes can be obtained by \fBERR_get_error\fR\|(3). -.SH "NOTES" +.SH NOTES .IX Header "NOTES" -The \fB\s-1EVP\s0\fR interface to digital signatures should almost always be used in -preference to the low-level interfaces. This is because the code then becomes +The \fBEVP\fR interface to digital signatures should almost always be used in +preference to the low\-level interfaces. This is because the code then becomes transparent to the algorithm used and much more flexible. .PP The call to \fBEVP_VerifyFinal()\fR internally finalizes a copy of the digest context. This means that calls to \fBEVP_VerifyUpdate()\fR and \fBEVP_VerifyFinal()\fR can be called -later to digest and verify additional data. +later to digest and verify additional data. Applications may disable this +behavior by setting the EVP_MD_CTX_FLAG_FINALISE context flag via +\&\fBEVP_MD_CTX_set_flags\fR\|(3). .PP Since only a copy of the digest context is ever finalized the context must be cleaned up after use by calling \fBEVP_MD_CTX_free()\fR or a memory leak will occur. -.SH "BUGS" +.PP +Note that not all providers support continuation, in case the selected +provider does not allow to duplicate contexts \fBEVP_VerifyFinal()\fR will +finalize the digest context and attempting to process additional data via +\&\fBEVP_VerifyUpdate()\fR will result in an error. +.SH BUGS .IX Header "BUGS" Older versions of this documentation wrongly stated that calls to \&\fBEVP_VerifyUpdate()\fR could not be made after calling \fBEVP_VerifyFinal()\fR. @@ -210,14 +152,17 @@ The previous two bugs are fixed in the newer EVP_DigestVerify*() function. \&\fBevp\fR\|(7), \&\fBEVP_SignInit\fR\|(3), \&\fBEVP_DigestInit\fR\|(3), -\&\fBevp\fR\|(7), \s-1\fBHMAC\s0\fR\|(3), \s-1\fBMD2\s0\fR\|(3), -\&\s-1\fBMD5\s0\fR\|(3), \s-1\fBMDC2\s0\fR\|(3), \s-1\fBRIPEMD160\s0\fR\|(3), -\&\s-1\fBSHA1\s0\fR\|(3), \fBdgst\fR\|(1) -.SH "COPYRIGHT" +\&\fBevp\fR\|(7), \fBHMAC\fR\|(3), \fBMD2\fR\|(3), +\&\fBMD5\fR\|(3), \fBMDC2\fR\|(3), \fBRIPEMD160\fR\|(3), +\&\fBSHA1\fR\|(3), \fBopenssl\-dgst\fR\|(1) +.SH HISTORY +.IX Header "HISTORY" +The function \fBEVP_VerifyFinal_ex()\fR was added in OpenSSL 3.0. +.SH COPYRIGHT .IX Header "COPYRIGHT" -Copyright 2000\-2020 The OpenSSL Project Authors. All Rights Reserved. +Copyright 2000\-2023 The OpenSSL Project Authors. All Rights Reserved. .PP -Licensed under the OpenSSL license (the \*(L"License\*(R"). You may not use +Licensed under the Apache License 2.0 (the "License"). You may not use this file except in compliance with the License. You can obtain a copy -in the file \s-1LICENSE\s0 in the source distribution or at +in the file LICENSE in the source distribution or at <https://www.openssl.org/source/license.html>. |