Older versions of this documentation wrongly stated that calls to
EVP_VerifyUpdate() could not be made after calling EVP_VerifyFinal().
+Since the public key is passed in the call to EVP_SignFinal() any error
+relating to the private key (for example an unsuitable key and digest
+combination) will not be indicated until after potentially large amounts of
+data have been passed through EVP_SignUpdate().
+
+It is not possible to change the signing parameters using these function.
+
+The previous two bugs are fixed in the newer EVP_VerifyDigest*() function.
+
=head1 SEE ALSO
L<evp(3)|evp(3)>,