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authorAdam Eijdenberg <eijdenberg@google.com>2015-10-19 11:16:25 -0700
committerRich Salz <rsalz@openssl.org>2015-10-22 18:27:48 -0400
commit8cbb048c3ea416f2bd8a3706d027f3aa26ef08d9 (patch)
tree60b221d00c3a2a619b299855af78de2754723586 /doc
parent5212d39bd92ede18b22fe8173e724a7eac35cb8a (diff)
Clarify return values for EVP_DigestVerifyFinal.
Previous language was unclear. New language isn't pretty but I believe it is more accurate. Signed-off-by: Rich Salz <rsalz@openssl.org> Reviewed-by: Ben Laurie <ben@openssl.org> Reviewed-by: Richard Levitte <levitte@openssl.org>
Diffstat (limited to 'doc')
-rw-r--r--doc/crypto/EVP_DigestVerifyInit.pod9
1 files changed, 5 insertions, 4 deletions
diff --git a/doc/crypto/EVP_DigestVerifyInit.pod b/doc/crypto/EVP_DigestVerifyInit.pod
index 44d3cdbb0d..338fc74616 100644
--- a/doc/crypto/EVP_DigestVerifyInit.pod
+++ b/doc/crypto/EVP_DigestVerifyInit.pod
@@ -36,10 +36,11 @@ B<sig> of length B<siglen>.
EVP_DigestVerifyInit() and EVP_DigestVerifyUpdate() return 1 for success and 0
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)>.