@deftypefun {int} {gnutls_x509_crl_set_authority_key_id} (gnutls_x509_crl_t @var{crl}, const void * @var{id}, size_t @var{id_size})
@var{crl}: a CRL of type @code{gnutls_x509_crl_t} 

@var{id}: The key ID

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

This function will set the CRL's authority key ID extension.  Only
the keyIdentifier field can be set with this function. This may
be used by an authority that holds multiple private keys, to distinguish
the used key.

@strong{Returns:} On success, @code{GNUTLS_E_SUCCESS}  (0) is returned, otherwise a
negative error value.

@strong{Since:} 2.8.0
@end deftypefun