gnutls_certificate_verify_peers3(3)  gnutls  gnutls_certificate_verify_peers3(3)

       gnutls_certificate_verify_peers3 - API function

       #include <gnutls/gnutls.h>

       int gnutls_certificate_verify_peers3(gnutls_session_t session, const char
       * hostname, unsigned int * status);

       gnutls_session_t session
                   is a gnutls session

       const char * hostname
                   is the expected name of the peer; may be NULL

       unsigned int * status
                   is the output of the verification

       This function will verify the peer's certificate and store the the status
       in the  status variable as a bitwise OR of gnutls_certificate_status_t
       values or zero if the certificate is trusted. Note that value in  status
       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 gnutls_certificate_set_verify_flags(). See the documentation of
       gnutls_certificate_verify_peers2() for details in the verification

       This function will take into account the stapled OCSP responses sent by
       the server, as well as the following X.509 certificate extensions: Name
       Constraints, Key Usage, and Basic Constraints (pathlen).

       If the  hostname provided is non-NULL then this function will compare the
       hostname in the certificate against it. The comparison will follow the
       RFC6125 recommendations. If names do not match the
       GNUTLS_CERT_UNEXPECTED_OWNER status flag will be set.

       In order to verify the purpose of the end-certificate (by checking the
       extended key usage), use gnutls_certificate_verify_peers().

       To avoid denial of service attacks some default upper limits regarding
       the certificate key size and chain size are set. To override them use

       Note that when using raw public-keys verification will not work because
       there is no corresponding certificate body belonging to the raw key that
       can be verified. In that case this function will return

       GNUTLS_E_SUCCESS (0) when the validation is performed, or a negative
       error code otherwise.  A successful error code means that the  status
       parameter must be checked to obtain the validation status.


       Report bugs to <>.
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       Copying and distribution of this file, with or without modification, are
       permitted in any medium without royalty provided the copyright notice and
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       The full documentation for gnutls is maintained as a Texinfo manual.  If
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gnutls                                3.7.0  gnutls_certificate_verify_peers3(3)