You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
75 lines
2.9 KiB
75 lines
2.9 KiB
/***************************************************************************
|
|
* Copyright (C) 2005 by Joris Guisson *
|
|
* joris.guisson@gmail.com *
|
|
* *
|
|
* This program is free software; you can redistribute it and/or modify *
|
|
* it under the terms of the GNU General Public License as published by *
|
|
* the Free Software Foundation; either version 2 of the License, or *
|
|
* (at your option) any later version. *
|
|
* *
|
|
* This program 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 General Public License for more details. *
|
|
* *
|
|
* You should have received a copy of the GNU General Public License *
|
|
* along with this program; if not, write to the *
|
|
* Free Software Foundation, Inc., *
|
|
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. *
|
|
***************************************************************************/
|
|
#include <util/log.h>
|
|
#include <torrent/globals.h>
|
|
#include <util/sha1hash.h>
|
|
#include "functions.h"
|
|
#include "bigint.h"
|
|
|
|
using namespace bt;
|
|
|
|
namespace mse
|
|
{
|
|
/*
|
|
static const BigInt P = BigInt(
|
|
"0xFFFFFFFFFFFFFFFFC90FDAA22168C234C4C6628B80DC1CD"
|
|
"129024E088A67CC74020BBEA63B139B22514A08798E3404"
|
|
"DDEF9519B3CD3A431B302B0A6DF25F14374FE1356D6D51C"
|
|
"245E485B576625E7EC6F44C42E9A63A36210000000000090563");
|
|
*/
|
|
static const BigInt P = BigInt("0xFFFFFFFFFFFFFFFFC90FDAA22168C234C4C6628B80DC1CD129024E088A67CC74020BBEA63B139B22514A08798E3404DDEF9519B3CD3A431B302B0A6DF25F14374FE1356D6D51C245E485B576625E7EC6F44C42E9A63A36210000000000090563");
|
|
|
|
void GeneratePublicPrivateKey(BigInt & priv,BigInt & pub)
|
|
{
|
|
BigInt G = BigInt("0x02");
|
|
priv = BigInt::random();
|
|
pub = BigInt::powerMod(G,priv,P);
|
|
}
|
|
|
|
BigInt DHSecret(const BigInt & our_priv,const BigInt & peer_pub)
|
|
{
|
|
return BigInt::powerMod(peer_pub,our_priv,P);
|
|
}
|
|
|
|
bt::SHA1Hash EncryptionKey(bool a,const BigInt & s,const bt::SHA1Hash & skey)
|
|
{
|
|
Uint8 buf[120];
|
|
memcpy(buf,"key",3);
|
|
buf[3] = (Uint8)(a ? 'A' : 'B');
|
|
s.toBuffer(buf + 4,96);
|
|
memcpy(buf + 100,skey.getData(),20);
|
|
return bt::SHA1Hash::generate(buf,120);
|
|
}
|
|
|
|
void DumpBigInt(const TQString & name,const BigInt & bi)
|
|
{
|
|
static Uint8 buf[512];
|
|
Uint32 nb = bi.toBuffer(buf,512);
|
|
bt::Log & lg = Out();
|
|
lg << name << " (" << nb << ") = ";
|
|
for (Uint32 i = 0;i < nb;i++)
|
|
{
|
|
lg << TQString("0x%1 ").tqarg(buf[i],0,16);
|
|
}
|
|
lg << endl;
|
|
}
|
|
|
|
}
|