@deftypefun {int} {gnutls_x509_crl_set_crt_serial} (gnutls_x509_crl_t @var{crl}, const void * @var{serial}, size_t @var{serial_size}, time_t @var{revocation_time})
@var{crl}: should contain a gnutls_x509_crl_t type

@var{serial}: The revoked certificate's serial number

@var{serial_size}: Holds the size of the serial field.

@var{revocation_time}: The time this certificate was revoked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