1=pod 2 3=head1 NAME 4 5SSL_get_verify_result - get result of peer certificate verification 6 7=head1 SYNOPSIS 8 9 #include <openssl/ssl.h> 10 11 long SSL_get_verify_result(const SSL *ssl); 12 13=head1 DESCRIPTION 14 15SSL_get_verify_result() returns the result of the verification of the 16X509 certificate presented by the peer, if any. 17 18=head1 NOTES 19 20SSL_get_verify_result() can only return one error code while the verification 21of a certificate can fail because of many reasons at the same time. Only 22the last verification error that occurred during the processing is available 23from SSL_get_verify_result(). 24 25Sometimes there can be a sequence of errors leading to the verification 26failure as reported by SSL_get_verify_result(). 27To get the errors, it is necessary to setup a verify callback via 28L<SSL_CTX_set_verify(3)> or L<SSL_set_verify(3)> and retrieve the errors 29from the error stack there, because once L<SSL_connect(3)> returns, 30these errors may no longer be available. 31 32The verification result is part of the established session and is restored 33when a session is reused. 34 35=head1 BUGS 36 37If no peer certificate was presented, the returned result code is 38X509_V_OK. This is because no verification error occurred, it does however 39not indicate success. SSL_get_verify_result() is only useful in connection 40with L<SSL_get_peer_certificate(3)>. 41 42=head1 RETURN VALUES 43 44The following return values can currently occur: 45 46=over 4 47 48=item X509_V_OK 49 50The verification succeeded or no peer certificate was presented. 51 52=item Any other value 53 54Documented in L<openssl-verify(1)>. 55 56=back 57 58=head1 SEE ALSO 59 60L<ssl(7)>, L<SSL_set_verify_result(3)>, 61L<SSL_get_peer_certificate(3)>, 62L<openssl-verify(1)> 63 64=head1 COPYRIGHT 65 66Copyright 2000-2023 The OpenSSL Project Authors. All Rights Reserved. 67 68Licensed under the Apache License 2.0 (the "License"). You may not use 69this file except in compliance with the License. You can obtain a copy 70in the file LICENSE in the source distribution or at 71L<https://www.openssl.org/source/license.html>. 72 73=cut 74