/*

* 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

#ifdef __cplusplus

extern "C" {

#endif

#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);

void ssh_client_curve25519_remove_callbacks(ssh_session session);

#ifdef WITH_SERVER

void ssh_server_curve25519_init(ssh_session session);

#endif /* WITH_SERVER */

#ifdef __cplusplus

}

#endif

#endif /* CURVE25519_H_ */