int _gnutls_PKCS1key2gnutlsKey(gnutls_private_key * pkey, gnutls_datum raw_key);
int _gnutls_DSAkey2gnutlsKey(gnutls_private_key * pkey, gnutls_datum raw_key);
void _gnutls_free_private_key( gnutls_private_key pkey);
int _gnutls_der_check_if_rsa_key(const gnutls_datum * key_struct);
int _gnutls_der_check_if_dsa_key(const gnutls_datum * key_struct);