diff options
Diffstat (limited to 'doc/crypto/EVP_DigestVerifyInit.pod')
| -rw-r--r-- | doc/crypto/EVP_DigestVerifyInit.pod | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/doc/crypto/EVP_DigestVerifyInit.pod b/doc/crypto/EVP_DigestVerifyInit.pod index e0217e4..0ead2d2 100644 --- a/doc/crypto/EVP_DigestVerifyInit.pod +++ b/doc/crypto/EVP_DigestVerifyInit.pod @@ -37,10 +37,11 @@ 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. -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)>. |