



@deftypefun {int} {gnutls_openpgp_crt_get_key_usage} (gnutls_openpgp_crt_t @var{key}, unsigned int * @var{key_usage})
@var{key}: should contain a gnutls_openpgp_crt_t structure

@var{key_usage}: where the key usage bits will be stored

This function will return certificate's key usage, by checking the
key algorithm. The key usage value will ORed values of the:
@code{GNUTLS_KEY_DIGITAL_SIGNATURE} , @code{GNUTLS_KEY_KEY_ENCIPHERMENT} .

@strong{Returns:} @code{GNUTLS_E_SUCCESS}  on success, or an error code.
@end deftypefun
