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Diffstat (limited to 'doc/crypto/EVP_VerifyInit.pod')
| -rw-r--r-- | doc/crypto/EVP_VerifyInit.pod | 72 |
1 files changed, 0 insertions, 72 deletions
diff --git a/doc/crypto/EVP_VerifyInit.pod b/doc/crypto/EVP_VerifyInit.pod deleted file mode 100644 index 736a0f4a822..00000000000 --- a/doc/crypto/EVP_VerifyInit.pod +++ /dev/null @@ -1,72 +0,0 @@ -=pod - -=head1 NAME - -EVP_VerifyInit, EVP_VerifyUpdate, EVP_VerifyFinal - EVP signature verification functions - -=head1 SYNOPSIS - - #include <openssl/evp.h> - - void EVP_VerifyInit(EVP_MD_CTX *ctx, const EVP_MD *type); - void EVP_VerifyUpdate(EVP_MD_CTX *ctx, const void *d, unsigned int cnt); - int EVP_VerifyFinal(EVP_MD_CTX *ctx,unsigned char *sigbuf, unsigned int siglen,EVP_PKEY *pkey); - -=head1 DESCRIPTION - -The EVP signature verification routines are a high level interface to digital -signatures. - -EVP_VerifyInit() initializes a verification context B<ctx> to using digest -B<type>: this will typically be supplied by a function such as EVP_sha1(). - -EVP_VerifyUpdate() hashes B<cnt> bytes of data at B<d> into the -verification context B<ctx>. This function can be called several times on the -same B<ctx> to include additional data. - -EVP_VerifyFinal() verifies the data in B<ctx> using the public key B<pkey> -and against the B<siglen> bytes at B<sigbuf>. After calling EVP_VerifyFinal() -no additional calls to EVP_VerifyUpdate() can be made, but EVP_VerifyInit() -can be called to initialize a new verification operation. - -=head1 RETURN VALUES - -EVP_VerifyInit() and EVP_VerifyUpdate() do not return values. - -EVP_VerifyFinal() returns 1 for a correct signature, 0 for failure and -1 if some -other error occurred. - -The error codes can be obtained by L<ERR_get_error(3)|ERR_get_error(3)>. - -=head1 NOTES - -The B<EVP> 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. - -Due to the link between message digests and public key algorithms the correct -digest algorithm must be used with the correct public key type. A list of -algorithms and associated public key algorithms appears in -L<EVP_DigestInit(3)|EVP_DigestInit(3)>. - -=head1 BUGS - -Several of the functions do not return values: maybe they should. Although the -internal digest operations will never fail some future hardware based operations -might. - -=head1 SEE ALSO - -L<evp(3)|evp(3)>, -L<EVP_SignInit(3)|EVP_SignInit(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<digest(1)|digest(1)> - -=head1 HISTORY - -EVP_VerifyInit(), EVP_VerifyUpdate() and EVP_VerifyFinal() are -available in all versions of SSLeay and OpenSSL. - -=cut |
