1=pod 2 3=head1 NAME 4 5SSL_get_peer_certificate - get the X509 certificate of the peer 6 7=head1 SYNOPSIS 8 9 #include <openssl/ssl.h> 10 11 X509 *SSL_get_peer_certificate(const SSL *ssl); 12 13=head1 DESCRIPTION 14 15SSL_get_peer_certificate() returns a pointer to the X509 certificate the 16peer presented. If the peer did not present a certificate, NULL is returned. 17 18=head1 NOTES 19 20Due to the protocol definition, a TLS/SSL server will always send a 21certificate, if present. A client will only send a certificate when 22explicitly requested to do so by the server (see 23L<SSL_CTX_set_verify(3)>). If an anonymous cipher 24is used, no certificates are sent. 25 26That a certificate is returned does not indicate information about the 27verification state, use L<SSL_get_verify_result(3)> 28to check the verification state. 29 30The reference count of the X509 object is incremented by one, so that it 31will not be destroyed when the session containing the peer certificate is 32freed. The X509 object must be explicitly freed using X509_free(). 33 34=head1 RETURN VALUES 35 36The following return values can occur: 37 38=over 4 39 40=item NULL 41 42No certificate was presented by the peer or no connection was established. 43 44=item Pointer to an X509 certificate 45 46The return value points to the certificate presented by the peer. 47 48=back 49 50=head1 SEE ALSO 51 52L<ssl(7)>, L<SSL_get_verify_result(3)>, 53L<SSL_CTX_set_verify(3)> 54 55=head1 COPYRIGHT 56 57Copyright 2000-2016 The OpenSSL Project Authors. All Rights Reserved. 58 59Licensed under the OpenSSL license (the "License"). You may not use 60this file except in compliance with the License. You can obtain a copy 61in the file LICENSE in the source distribution or at 62L<https://www.openssl.org/source/license.html>. 63 64=cut 65