3
* aria2 - The high speed download utility
5
* Copyright (C) 2013 Nils Maier
7
* This program is free software; you can redistribute it and/or modify
8
* it under the terms of the GNU General Public License as published by
9
* the Free Software Foundation; either version 2 of the License, or
10
* (at your option) any later version.
12
* This program is distributed in the hope that it will be useful,
13
* but WITHOUT ANY WARRANTY; without even the implied warranty of
14
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15
* GNU General Public License for more details.
17
* You should have received a copy of the GNU General Public License
18
* along with this program; if not, write to the Free Software
19
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21
* In addition, as a special exception, the copyright holders give
22
* permission to link the code of portions of this program with the
23
* OpenSSL library under certain conditions as described in each
24
* individual source file, and distribute linked combinations
26
* You must obey the GNU General Public License in all respects
27
* for all of the code used other than OpenSSL. If you modify
28
* file(s) with this exception, you may extend this exception to your
29
* version of the file(s), but you are not obligated to do so. If you
30
* do not wish to do so, delete this exception statement from your
31
* version. If you delete this exception statement from all source
32
* files in the program, then also delete it here.
36
#ifndef D_INTERNAL_DH_KEY_EXCHANGE_H
37
#define D_INTERNAL_DH_KEY_EXCHANGE_H
46
typedef bignum::ulong<1024> n; // aka max. 8096 bits
54
DHKeyExchange() : keyLength_(0) {}
56
void init(const unsigned char* prime, size_t primeBits,
57
const unsigned char* generator, size_t privateKeyBits);
59
void generatePublicKey();
61
size_t getPublicKey(unsigned char* out, size_t outLength) const;
63
void generateNonce(unsigned char* out, size_t outLength) const;
65
size_t computeSecret(unsigned char* out, size_t outLength,
66
const unsigned char* peerPublicKeyData,
67
size_t peerPublicKeyLength) const;
72
#endif // D_INTERNAL_DH_KEY_EXCHANGE_H