@deftypefun {int} {gnutls_x509_privkey_sign_hash} (gnutls_x509_privkey_t @var{key}, const gnutls_datum_t * @var{hash}, gnutls_datum_t * @var{signature})

@var{key}: a key

@var{hash}: holds the data to be signed

@var{signature}: will contain newly allocated signature

This function will sign the given hash using the private key. Do not

use this function directly unless you know what it is. Typical signing

requires the data to be hashed and stored in special formats 

(e.g. BER Digest-Info for RSA).

This API is provided only for backwards compatibility, and thus

restricted to RSA, DSA and ECDSA key types. For other key types please

use @code{gnutls_privkey_sign_hash()}  and @code{gnutls_privkey_sign_data()} .

@strong{Returns:} On success, @code{GNUTLS_E_SUCCESS}  (0) is returned, otherwise a

negative error value.

Deprecated in: 2.12.0

@end deftypefun