SSL_get_peer_certificate(3) OpenSSL SSL_get_peer_certificate(3)
NAME
SSL_get_peer_certificate - get the X509 certificate of the peer
SYNOPSIS
#include <openssl/ssl.h>
X509 *SSL_get_peer_certificate(const SSL *ssl);
DESCRIPTION
SSL_get_peer_certificate() returns a pointer to the X509 certificate
the peer presented. If the peer did not present a certificate, NULL is
returned.
NOTES
Due to the protocol definition, a TLS/SSL server will always send a
certificate, if present. A client will only send a certificate when
explicitly requested to do so by the server (see
SSL_CTX_set_verify(3)). If an anonymous cipher is used, no certificates
are sent.
That a certificate is returned does not indicate information about the
verification state, use SSL_get_verify_result(3) to check the
verification state.
The reference count of the X509 object is incremented by one, so that
it will not be destroyed when the session containing the peer
certificate is freed. The X509 object must be explicitly freed using
X509_free().
RETURN VALUES
The following return values can occur:
NULL
No certificate was presented by the peer or no connection was
established.
Pointer to an X509 certificate
The return value points to the certificate presented by the peer.
SEE ALSO
ssl(7), SSL_get_verify_result(3), SSL_CTX_set_verify(3)
COPYRIGHT
Copyright 2000-2016 The OpenSSL Project Authors. All Rights Reserved.
Licensed under the OpenSSL license (the "License"). You may not use
this file except in compliance with the License. You can obtain a copy
in the file LICENSE in the source distribution or at
<https://www.openssl.org/source/license.html>.
1.1.1d 2019-09-10 SSL_get_peer_certificate(3)
openssl 1.1.1d - Generated Tue Oct 15 18:17:24 CDT 2019