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/*
* Copyright (C) 2008-2014 TrinityCore <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, see <http://www.gnu.org/licenses/>.
*/
#include "BattlenetPacketCrypt.h"
#include "Cryptography/HmacHash.h"
#include "Cryptography/BigNumber.h"
Battlenet::PacketCrypt::PacketCrypt() : ::PacketCrypt(SHA256_DIGEST_LENGTH)
{
}
void Battlenet::PacketCrypt::Init(BigNumber* K)
{
uint8 ServerEncryptionKey[SEED_KEY_SIZE] = { 0x68, 0xE0, 0xC7, 0x2E, 0xDD, 0xD6, 0xD2, 0xF3, 0x1E, 0x5A, 0xB1, 0x55, 0xB1, 0x8B, 0x63, 0x1E };
HmacHash serverEncryptHmac(SEED_KEY_SIZE, ServerEncryptionKey, EVP_sha256(), SHA256_DIGEST_LENGTH);
uint8 *encryptHash = serverEncryptHmac.ComputeHash(K);
uint8 ClientDecryptionKey[SEED_KEY_SIZE] = { 0xDE, 0xA9, 0x65, 0xAE, 0x54, 0x3A, 0x1E, 0x93, 0x9E, 0x69, 0x0C, 0xAA, 0x68, 0xDE, 0x78, 0x39 };
HmacHash clientDecryptHmac(SEED_KEY_SIZE, ClientDecryptionKey, EVP_sha256(), SHA256_DIGEST_LENGTH);
uint8 *decryptHash = clientDecryptHmac.ComputeHash(K);
_clientDecrypt.Init(decryptHash);
_serverEncrypt.Init(encryptHash);
_initialized = true;
}
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