1SSL_get_peer_certificate(3) OpenSSL SSL_get_peer_certificate(3)
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6 SSL_get_peer_certificate - get the X509 certificate of the peer
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9 #include <openssl/ssl.h>
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11 X509 *SSL_get_peer_certificate(const SSL *ssl);
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14 SSL_get_peer_certificate() returns a pointer to the X509 certificate
15 the peer presented. If the peer did not present a certificate, NULL is
16 returned.
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19 Due to the protocol definition, a TLS/SSL server will always send a
20 certificate, if present. A client will only send a certificate when
21 explicitly requested to do so by the server (see SSL_CTX_set_ver‐
22 ify(3)). If an anonymous cipher is used, no certificates are sent.
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24 That a certificate is returned does not indicate information about the
25 verification state, use SSL_get_verify_result(3) to check the verifica‐
26 tion state.
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28 The reference count of the X509 object is incremented by one, so that
29 it will not be destroyed when the session containing the peer certifi‐
30 cate is freed. The X509 object must be explicitly freed using
31 X509_free().
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34 The following return values can occur:
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36 NULL
37 No certificate was presented by the peer or no connection was
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40 Pointer to an X509 certificate
41 The return value points to the certificate presented by the peer.
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44 ssl(3), SSL_get_verify_result(3), SSL_CTX_set_verify(3)
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480.9.8b 2005-03-30 SSL_get_peer_certificate(3)