@deftypefun {int} {gnutls_sign_algorithm_get} (gnutls_session_t @var{session})
@var{session}: is a @code{gnutls_session_t}  type.

Returns the signature algorithm that is (or will be) used in this
session by the server to sign data. This function should be
used only with TLS 1.2 or later.

@strong{Returns:} The sign algorithm or @code{GNUTLS_SIGN_UNKNOWN} .

@strong{Since:} 3.1.1
@end deftypefun