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124 .\" ========================================================================
126 .IX Title "SSL_get_peer_certificate 3"
127 .TH SSL_get_peer_certificate 3 "2014-01-06" "1.0.1f" "OpenSSL"
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133 SSL_get_peer_certificate \- get the X509 certificate of the peer
135 .IX Header "SYNOPSIS"
137 \& #include <openssl/ssl.h>
139 \& X509 *SSL_get_peer_certificate(const SSL *ssl);
142 .IX Header "DESCRIPTION"
143 \&\fISSL_get_peer_certificate()\fR returns a pointer to the X509 certificate the
144 peer presented. If the peer did not present a certificate, \s-1NULL\s0 is returned.
147 Due to the protocol definition, a \s-1TLS/SSL\s0 server will always send a
148 certificate, if present. A client will only send a certificate when
149 explicitly requested to do so by the server (see
150 \&\fISSL_CTX_set_verify\fR\|(3)). If an anonymous cipher
151 is used, no certificates are sent.
153 That a certificate is returned does not indicate information about the
154 verification state, use \fISSL_get_verify_result\fR\|(3)
155 to check the verification state.
157 The reference count of the X509 object is incremented by one, so that it
158 will not be destroyed when the session containing the peer certificate is
159 freed. The X509 object must be explicitly freed using \fIX509_free()\fR.
161 .IX Header "RETURN VALUES"
162 The following return values can occur:
165 No certificate was presented by the peer or no connection was established.
166 .IP "Pointer to an X509 certificate" 4
167 .IX Item "Pointer to an X509 certificate"
168 The return value points to the certificate presented by the peer.
170 .IX Header "SEE ALSO"
171 \&\fIssl\fR\|(3), \fISSL_get_verify_result\fR\|(3),
172 \&\fISSL_CTX_set_verify\fR\|(3)