gnutls_certificate_verify_peers2(3)  gnutls  gnutls_certificate_verify_peers2(3)

       gnutls_certificate_verify_peers2 - API function

       #include <gnutls/gnutls.h>

       int gnutls_certificate_verify_peers2(gnutls_session_t session, unsigned
       int * status);

       gnutls_session_t session
                   is a gnutls session

       unsigned int * status
                   is the output of the verification

       This function will verify the peer's certificate and store 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().

       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).

       Note that you must also check the peer's name in order to check if the
       verified certificate belongs to the actual peer, see
       gnutls_x509_crt_check_hostname(), or use

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

       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 <>.
       Home page:

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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
       this notice are preserved.

       The full documentation for gnutls is maintained as a Texinfo manual.  If
       the /usr/share/doc/gnutls/ directory does not contain the HTML form visit

gnutls                                3.6.5  gnutls_certificate_verify_peers2(3)