NAME
SSL_get_peer_certificate — get the X509 certificate of the peer
Synopsis
#include <openssl/ssl.h>
X509
*SSL_get_peer_certificate(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(3), SSL_get_verify_result(3), SSL_CTX_set_verify(3)
