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# Conflicts:
#	README.md
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Zhi Guan
2017-02-14 16:12:29 +08:00
parent d2254170b8
commit 43fed1108d
3503 changed files with 320546 additions and 408546 deletions
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45
doc/crypto/EVP_DigestVerifyInit.pod
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@@ -9,8 +9,8 @@ EVP_DigestVerifyInit, EVP_DigestVerifyUpdate, EVP_DigestVerifyFinal - EVP signat
#include <openssl/evp.h>
int EVP_DigestVerifyInit(EVP_MD_CTX *ctx, EVP_PKEY_CTX **pctx,
const EVP_MD *type, ENGINE *e, EVP_PKEY *pkey);
int EVP_DigestVerifyUpdate(EVP_MD_CTX *ctx, const void *d, unsigned int cnt);
const EVP_MD *type, ENGINE *e, EVP_PKEY *pkey);
int EVP_DigestVerifyUpdate(EVP_MD_CTX *ctx, const void *d, size_t cnt);
int EVP_DigestVerifyFinal(EVP_MD_CTX *ctx, const unsigned char *sig, size_t siglen);
=head1 DESCRIPTION
@@ -18,8 +18,8 @@ EVP_DigestVerifyInit, EVP_DigestVerifyUpdate, EVP_DigestVerifyFinal - EVP signat
The EVP signature routines are a high level interface to digital signatures.
EVP_DigestVerifyInit() sets up verification context B<ctx> to use digest
B<type> from ENGINE B<impl> and public key B<pkey>. B<ctx> must be initialized
with EVP_MD_CTX_init() before calling this function. If B<pctx> is not NULL the
B<type> from ENGINE B<impl> and public key B<pkey>. B<ctx> must be created
with EVP_MD_CTX_new() before calling this function. If B<pctx> is not NULL the
EVP_PKEY_CTX of the verification operation will be written to B<*pctx>: this
can be used to set alternative verification options.
@@ -34,15 +34,15 @@ B<sig> of length B<siglen>.
=head1 RETURN VALUES
EVP_DigestVerifyInit() and EVP_DigestVerifyUpdate() return 1 for success and 0
or a negative value for failure. In particular a return value of -2 indicates
the operation is not supported by the public key algorithm.
for failure.
Unlike other functions the return value 0 from EVP_DigestVerifyFinal() only
indicates that the signature did not verify successfully (that is tbs did
not match the original data or the signature was of invalid form) it is not an
indication of a more serious error.
EVP_DigestVerifyFinal() returns 1 for success; any other value indicates
failure. A return value of zero indicates that the signature did not verify
successfully (that is, tbs did not match the original data or the signature had
an invalid form), while other values indicate a more serious error (and
sometimes also indicate an invalid signature form).
The error codes can be obtained from L<ERR_get_error(3)|ERR_get_error(3)>.
The error codes can be obtained from L<ERR_get_error(3)>.
=head1 NOTES
@@ -56,7 +56,7 @@ needed to be used to sign using SHA1 and DSA. This is no longer necessary and
the use of clone digest is now discouraged.
For some key types and parameters the random number generator must be seeded
or the operation will fail.
or the operation will fail.
The call to EVP_DigestVerifyFinal() internally finalizes a copy of the digest
context. This means that EVP_VerifyUpdate() and EVP_VerifyFinal() can
@@ -68,15 +68,24 @@ will occur.
=head1 SEE ALSO
L<EVP_DigestSignInit(3)|EVP_DigestSignInit(3)>,
L<EVP_DigestInit(3)|EVP_DigestInit(3)>, L<err(3)|err(3)>,
L<evp(3)|evp(3)>, L<hmac(3)|hmac(3)>, L<md2(3)|md2(3)>,
L<md5(3)|md5(3)>, L<mdc2(3)|mdc2(3)>, L<ripemd(3)|ripemd(3)>,
L<sha(3)|sha(3)>, L<dgst(1)|dgst(1)>
L<EVP_DigestSignInit(3)>,
L<EVP_DigestInit(3)>, L<err(3)>,
L<evp(3)>, L<hmac(3)>, L<md2(3)>,
L<md5(3)>, L<mdc2(3)>, L<ripemd(3)>,
L<sha(3)>, L<dgst(1)>
=head1 HISTORY
EVP_DigestVerifyInit(), EVP_DigestVerifyUpdate() and EVP_DigestVerifyFinal()
EVP_DigestVerifyInit(), EVP_DigestVerifyUpdate() and EVP_DigestVerifyFinal()
were first added to OpenSSL 1.0.0.
=head1 COPYRIGHT
Copyright 2006-2016 The OpenSSL Project Authors. All Rights Reserved.
Licensed under the OpenSSL license (the "License"). You may not use
this file except in compliance with the License. You can obtain a copy
in the file LICENSE in the source distribution or at
L<https://www.openssl.org/source/license.html>.
=cut