@deftypefun {gnutls_digest_algorithm_t} {gnutls_sign_get_hash_algorithm} (gnutls_sign_algorithm_t @var{sign})
@var{sign}: is a signature algorithm

This function returns the digest algorithm corresponding to
the given signature algorithms.

@strong{Since:} 3.1.1

@strong{Returns:} return a @code{gnutls_digest_algorithm_t}  value, or @code{GNUTLS_DIG_UNKNOWN}  on error.
@end deftypefun