.\" DO NOT MODIFY THIS FILE!  It was generated by gdoc.
.TH "gnutls_certificate_verify_peers" 3 "3.3.8" "gnutls" "gnutls"
.SH NAME
gnutls_certificate_verify_peers \- API function
.SH SYNOPSIS
.B #include <gnutls/gnutls.h>
.sp
.BI "int gnutls_certificate_verify_peers(gnutls_session_t " session ", gnutls_typed_vdata_st * " data ", unsigned int " elements ", unsigned int * " status ");"
.SH ARGUMENTS
.IP "gnutls_session_t session" 12
is a gnutls session
.IP "gnutls_typed_vdata_st * data" 12
an array of typed data
.IP "unsigned int elements" 12
the number of data elements
.IP "unsigned int * status" 12
is the output of the verification
.SH "DESCRIPTION"
This function will verify the peer's certificate and store the
status in the  \fIstatus\fP variable as a bitwise or'd gnutls_certificate_status_t
values or zero if the certificate is trusted. Note that value in  \fIstatus\fP is set only when the return value of this function is success (i.e, failure 
to trust a certificate does not imply a negative return value).
The default verification flags used by this function can be overridden
using \fBgnutls_certificate_set_verify_flags()\fP. See the documentation
of \fBgnutls_certificate_verify_peers2()\fP for details in the verification process.

The acceptable  \fIdata\fP types are \fBGNUTLS_DT_DNS_HOSTNAME\fP and \fBGNUTLS_DT_KEY_PURPOSE_OID\fP.
The former accepts as data a null\-terminated hostname, and the latter a null\-terminated
object identifier (e.g., \fBGNUTLS_KP_TLS_WWW_SERVER\fP).
If a DNS hostname is provided then this function will compare
the hostname in the certificate against the given. If names do not match the 
\fBGNUTLS_CERT_UNEXPECTED_OWNER\fP status flag will be set.
If a key purpose OID is provided and the end\-certificate contains the extended key
usage PKIX extension, it will be required to be have the provided key purpose 
or be marked for any purpose, otherwise verification will fail with \fBGNUTLS_CERT_SIGNER_CONSTRAINTS_FAILURE\fP status.
.SH "RETURNS"
a negative error code on error and \fBGNUTLS_E_SUCCESS\fP (0) on success.
.SH "SINCE"
3.3.0
.SH "REPORTING BUGS"
Report bugs to <bugs@gnutls.org>.
.br
Home page: http://www.gnutls.org

.SH COPYRIGHT
Copyright \(co 2001-2014 Free Software Foundation, Inc..
.br
Copying and distribution of this file, with or without modification,
are permitted in any medium without royalty provided the copyright
notice and this notice are preserved.
.SH "SEE ALSO"
The full documentation for
.B gnutls
is maintained as a Texinfo manual.
If the /usr/share/doc/gnutls/
directory does not contain the HTML form visit
.B
.IP http://www.gnutls.org/manual/
.PP