@deftypefun {int} {gnutls_x509_crl_get_signature} (gnutls_x509_crl_t @var{crl}, char * @var{sig}, size_t * @var{sizeof_sig})
@var{crl}: should contain a gnutls_x509_crl_t type

@var{sig}: a pointer where the signature part will be copied (may be null).

@var{sizeof_sig}: initially holds the size of  @code{sig} 

This function will extract the signature field of a CRL.

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