/*

 * This file is part of the SSH Library

 *

 * Copyright (c) 2013 by Aris Adamantiadis <aris@badcode.be>

 *

 * This library 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,

 * version 2.1 of the License.

 *

 * 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 library; if not, write to the Free Software

 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA

 */

#ifndef CURVE25519_H_

#define CURVE25519_H_

#include "config.h"

#include "libssh.h"

#ifdef WITH_NACL

#include <nacl/crypto_scalarmult_curve25519.h>

#define CURVE25519_PUBKEY_SIZE crypto_scalarmult_curve25519_BYTES

#define CURVE25519_PRIVKEY_SIZE crypto_scalarmult_curve25519_SCALARBYTES

#define crypto_scalarmult_base crypto_scalarmult_curve25519_base

#define crypto_scalarmult crypto_scalarmult_curve25519

#else

#define CURVE25519_PUBKEY_SIZE 32

#define CURVE25519_PRIVKEY_SIZE 32

int crypto_scalarmult_base(unsigned char *q, const unsigned char *n);

int crypto_scalarmult(unsigned char *q, const unsigned char *n, const unsigned char *p);

#endif /* WITH_NACL */

#ifdef HAVE_ECC

#define HAVE_CURVE25519 1

#endif

typedef unsigned char ssh_curve25519_pubkey[CURVE25519_PUBKEY_SIZE];

typedef unsigned char ssh_curve25519_privkey[CURVE25519_PRIVKEY_SIZE];

int ssh_client_curve25519_init(ssh_session session);

#ifdef WITH_SERVER

void ssh_server_curve25519_init(ssh_session session);

#endif /* WITH_SERVER */

#endif /* CURVE25519_H_ */