@deftypefun {int} {gnutls_x509_crl_set_crt} (gnutls_x509_crl_t @var{crl}, gnutls_x509_crt_t @var{crt}, time_t @var{revocation_time}) @var{crl}: should contain a gnutls_x509_crl_t type @var{crt}: a certificate of type @code{gnutls_x509_crt_t} with the revoked certificate @var{revocation_time}: The time this certificate was revoked This function will set a revoked certificate's serial number to the CRL. @strong{Returns:} On success, @code{GNUTLS_E_SUCCESS} (0) is returned, otherwise a negative error value. @end deftypefun