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/*
* Copyright (C) 2005-2009 MaNGOS <http://getmangos.com/>
*
* Copyright (C) 2008-2010 Trinity <http://www.trinitycore.org/>
*
* 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "AuthCrypt.h"
#include "Hmac.h"
#include "Log.h"
#include "BigNumber.h"
AuthCrypt::AuthCrypt() : _clientDecrypt(SHA_DIGEST_LENGTH), _serverEncrypt(SHA_DIGEST_LENGTH)
{
_initialized = false;
}
AuthCrypt::~AuthCrypt()
{
}
void AuthCrypt::Init(BigNumber *K)
{
uint8 ServerEncryptionKey[SEED_KEY_SIZE] = { 0xCC, 0x98, 0xAE, 0x04, 0xE8, 0x97, 0xEA, 0xCA, 0x12, 0xDD, 0xC0, 0x93, 0x42, 0x91, 0x53, 0x57 };
HmacHash serverEncryptHmac(SEED_KEY_SIZE, (uint8*)ServerEncryptionKey);
uint8 *encryptHash = serverEncryptHmac.ComputeHash(K);
uint8 ServerDecryptionKey[SEED_KEY_SIZE] = { 0xC2, 0xB3, 0x72, 0x3C, 0xC6, 0xAE, 0xD9, 0xB5, 0x34, 0x3C, 0x53, 0xEE, 0x2F, 0x43, 0x67, 0xCE };
HmacHash clientDecryptHmac(SEED_KEY_SIZE, (uint8*)ServerDecryptionKey);
uint8 *decryptHash = clientDecryptHmac.ComputeHash(K);
//SARC4 _serverDecrypt(encryptHash);
_clientDecrypt.Init(decryptHash);
_serverEncrypt.Init(encryptHash);
//SARC4 _clientEncrypt(decryptHash);
uint8 syncBuf[1024];
memset(syncBuf, 0, 1024);
_serverEncrypt.UpdateData(1024, syncBuf);
//_clientEncrypt.UpdateData(1024, syncBuf);
memset(syncBuf, 0, 1024);
//_serverDecrypt.UpdateData(1024, syncBuf);
_clientDecrypt.UpdateData(1024, syncBuf);
_initialized = true;
}
void AuthCrypt::DecryptRecv(uint8 *data, size_t len)
{
if (!_initialized)
return;
_clientDecrypt.UpdateData(len, data);
}
void AuthCrypt::EncryptSend(uint8 *data, size_t len)
{
if (!_initialized)
return;
_serverEncrypt.UpdateData(len, data);
}
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