libssh 0.12.1 The SSH library

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curve25519.h
1/*
2 * This file is part of the SSH Library
3 *
4 * Copyright (c) 2013 by Aris Adamantiadis <aris@badcode.be>
5 *
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation,
9 * version 2.1 of the License.
10 *
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
15 *
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19 */
20
21#ifndef CURVE25519_H_
22#define CURVE25519_H_
23
24#include "config.h"
25#include "libssh.h"
26
27#ifdef WITH_NACL
28
29#include <nacl/crypto_scalarmult_curve25519.h>
30#define CURVE25519_PUBKEY_SIZE crypto_scalarmult_curve25519_BYTES
31#define CURVE25519_PRIVKEY_SIZE crypto_scalarmult_curve25519_SCALARBYTES
32#define crypto_scalarmult_base crypto_scalarmult_curve25519_base
33#define crypto_scalarmult crypto_scalarmult_curve25519
34#else
35
36#ifdef __cplusplus
37 extern "C" {
38#endif
39
40#define CURVE25519_PUBKEY_SIZE 32
41#define CURVE25519_PRIVKEY_SIZE 32
42 int crypto_scalarmult_base(unsigned char *q, const unsigned char *n);
43 int crypto_scalarmult(unsigned char *q, const unsigned char *n, const unsigned char *p);
44#endif /* WITH_NACL */
45
46#ifdef HAVE_ECC
47#define HAVE_CURVE25519 1
48#endif
49
50 typedef unsigned char ssh_curve25519_pubkey[CURVE25519_PUBKEY_SIZE];
51 typedef unsigned char ssh_curve25519_privkey[CURVE25519_PRIVKEY_SIZE];
52
53 int ssh_curve25519_init(ssh_session session);
54 int curve25519_do_create_k(ssh_session session, ssh_curve25519_pubkey k);
55 int ssh_curve25519_create_k(ssh_session session, ssh_curve25519_pubkey k);
56 int ssh_curve25519_build_k(ssh_session session);
57
58 int ssh_client_curve25519_init(ssh_session session);
59 void ssh_client_curve25519_remove_callbacks(ssh_session session);
60
61#ifdef WITH_SERVER
62 void ssh_server_curve25519_init(ssh_session session);
63#endif /* WITH_SERVER */
64
65#ifdef __cplusplus
66}
67#endif
68
69#endif /* CURVE25519_H_ */