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/*
* This file is part of the AzerothCore Project. See AUTHORS file for Copyright information
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU Affero General Public License as published by the
* Free Software Foundation; either version 3 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 Affero 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 "AuthCrypt.h"
#include "BigNumber.h"
#include "Errors.h"
#include "HMAC.h"
AuthCrypt::AuthCrypt() : _initialized(false)
{
}
void AuthCrypt::Init(SessionKey const& K)
{
uint8 ServerEncryptionKey[] = { 0xCC, 0x98, 0xAE, 0x04, 0xE8, 0x97, 0xEA, 0xCA, 0x12, 0xDD, 0xC0, 0x93, 0x42, 0x91, 0x53, 0x57 };
_serverEncrypt.Init(Acore::Crypto::HMAC_SHA1::GetDigestOf(ServerEncryptionKey, K));
uint8 ServerDecryptionKey[] = { 0xC2, 0xB3, 0x72, 0x3C, 0xC6, 0xAE, 0xD9, 0xB5, 0x34, 0x3C, 0x53, 0xEE, 0x2F, 0x43, 0x67, 0xCE };
_clientDecrypt.Init(Acore::Crypto::HMAC_SHA1::GetDigestOf(ServerDecryptionKey, K));
// Drop first 1024 bytes, as WoW uses ARC4-drop1024.
std::array<uint8, 1024> syncBuf;
_serverEncrypt.UpdateData(syncBuf);
_clientDecrypt.UpdateData(syncBuf);
_initialized = true;
}
void AuthCrypt::DecryptRecv(uint8* data, size_t len)
{
ASSERT(_initialized);
_clientDecrypt.UpdateData(data, len);
}
void AuthCrypt::EncryptSend(uint8* data, size_t len)
{
ASSERT(_initialized);
_serverEncrypt.UpdateData(data, len);
}
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