Update files for OpenSSL-1.0.0f import.
[dragonfly.git] / secure / lib / libssl / man / SSL_get_peer_certificate.3
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124.\" ========================================================================
125.\"
126.IX Title "SSL_get_peer_certificate 3"
e3261593 127.TH SSL_get_peer_certificate 3 "2012-01-04" "1.0.0f" "OpenSSL"
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128.\" For nroff, turn off justification. Always turn off hyphenation; it makes
129.\" way too many mistakes in technical documents.
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132.SH "NAME"
133SSL_get_peer_certificate \- get the X509 certificate of the peer
134.SH "SYNOPSIS"
e056f0e0 135.IX Header "SYNOPSIS"
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136.Vb 1
137\& #include <openssl/ssl.h>
e257b235 138\&
a561f9ff 139\& X509 *SSL_get_peer_certificate(const SSL *ssl);
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140.Ve
141.SH "DESCRIPTION"
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142.IX Header "DESCRIPTION"
143\&\fISSL_get_peer_certificate()\fR returns a pointer to the X509 certificate the
144peer presented. If the peer did not present a certificate, \s-1NULL\s0 is returned.
984263bc 145.SH "NOTES"
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146.IX Header "NOTES"
147Due to the protocol definition, a \s-1TLS/SSL\s0 server will always send a
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148certificate, if present. A client will only send a certificate when
149explicitly requested to do so by the server (see
e056f0e0 150\&\fISSL_CTX_set_verify\fR\|(3)). If an anonymous cipher
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151is used, no certificates are sent.
152.PP
153That a certificate is returned does not indicate information about the
e056f0e0 154verification state, use \fISSL_get_verify_result\fR\|(3)
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155to check the verification state.
156.PP
157The reference count of the X509 object is incremented by one, so that it
158will not be destroyed when the session containing the peer certificate is
159freed. The X509 object must be explicitly freed using \fIX509_free()\fR.
160.SH "RETURN VALUES"
e056f0e0 161.IX Header "RETURN VALUES"
984263bc 162The following return values can occur:
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163.IP "\s-1NULL\s0" 4
164.IX Item "NULL"
984263bc 165No certificate was presented by the peer or no connection was established.
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166.IP "Pointer to an X509 certificate" 4
167.IX Item "Pointer to an X509 certificate"
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168The return value points to the certificate presented by the peer.
169.SH "SEE ALSO"
a7d27d5a 170.IX Header "SEE ALSO"
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171\&\fIssl\fR\|(3), \fISSL_get_verify_result\fR\|(3),
172\&\fISSL_CTX_set_verify\fR\|(3)