/*

 * Copyright (C) 2000-2012 Free Software Foundation, Inc.

 *

 * Author: Nikos Mavrogiannopoulos

 *

 * This file is part of GnuTLS.

 *

 * The GnuTLS is free software; you can redistribute it and/or

 * modify it under the terms of the GNU Lesser General Public License

 * as published by the Free Software Foundation; either version 2.1 of

 * the License, or (at your option) any later version.

 *

 * This library is distributed in the hope that it will be useful, but

 * WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

 * Lesser General Public License for more details.

 *

 * You should have received a copy of the GNU Lesser General Public License

 * along with this program.  If not, see <https://www.gnu.org/licenses/>

 *

 */

#ifndef GNUTLS_LIB_SRP_H

#define GNUTLS_LIB_SRP_H

#include <config.h>

#ifdef ENABLE_SRP

bigint_t _gnutls_calc_srp_B(bigint_t * ret_b, bigint_t g, bigint_t n,

			    bigint_t v);

bigint_t _gnutls_calc_srp_u(bigint_t A, bigint_t B, bigint_t N);

bigint_t _gnutls_calc_srp_S1(bigint_t A, bigint_t b, bigint_t u,

			     bigint_t v, bigint_t n);

bigint_t _gnutls_calc_srp_A(bigint_t * a, bigint_t g, bigint_t n);

bigint_t _gnutls_calc_srp_S2(bigint_t B, bigint_t g, bigint_t x,

			     bigint_t a, bigint_t u, bigint_t n);

int _gnutls_calc_srp_x(char *username, char *password, uint8_t * salt,

		       size_t salt_size, size_t * size, void *digest);

int _gnutls_srp_gn(uint8_t ** ret_g, uint8_t ** ret_n, int bits);

/* g is defined to be 2 */

#define SRP_MAX_HASH_SIZE 24

#endif

#endif /* GNUTLS_LIB_SRP_H */