/**
* gnutls_x509_crl_get_signature_algorithm - returns the CRL's signature algorithm
* @crl: should contain a #gnutls_x509_crl_t structure
*
* This function will return a value of the #gnutls_sign_algorithm_t
* enumeration that is the signature algorithm.
*
* Returns: On success, %GNUTLS_E_SUCCESS is returned, otherwise a
* negative error value.
**/
int
gnutls_x509_crl_get_signature_algorithm (gnutls_x509_crl_t crl)
{
int result;
gnutls_datum_t sa;
if (crl == NULL)
{
gnutls_assert ();
return GNUTLS_E_INVALID_REQUEST;
}
/* Read the signature algorithm. Note that parameters are not
* read. They will be read from the issuer's certificate if needed.
*/
result =
_gnutls_x509_read_value (crl->crl, "signatureAlgorithm.algorithm",
&sa, 0);
if (result < 0)
{
gnutls_assert ();
return result;
}
result = _gnutls_x509_oid2sign_algorithm ((const char *) sa.data);
_gnutls_free_datum (&sa);
return result;
}
/*-
* gnutls_x509_get_signature_algorithm:
* @src: should contain an ASN1_TYPE structure
* @src_name: the description of the signature field
*
* This function will return a value of the #gnutls_sign_algorithm_t
* enumeration that is the signature algorithm that has been used to
* sign this certificate.
*
* Returns: a #gnutls_sign_algorithm_t value, or a negative error code on
* error.
-*/
int
_gnutls_x509_get_signature_algorithm(ASN1_TYPE src, const char *src_name)
{
int result;
gnutls_datum_t sa;
/* Read the signature algorithm. Note that parameters are not
* read. They will be read from the issuer's certificate if needed.
*/
result = _gnutls_x509_read_value(src, src_name, &sa);
if (result < 0) {
gnutls_assert();
return result;
}
result = _gnutls_x509_oid2sign_algorithm((char *) sa.data);
_gnutls_free_datum(&sa);
return result;
}
