61 lines
1.9 KiB
C++
61 lines
1.9 KiB
C++
/*
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* Copyright (C) 2016+ AzerothCore <www.azerothcore.org>, released under GNU GPL v2 license: http://github.com/azerothcore/azerothcore-wotlk/LICENSE-GPL2
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* Copyright (C) 2008-2016 TrinityCore <http://www.trinitycore.org/>
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* Copyright (C) 2005-2009 MaNGOS <http://getmangos.com/>
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*/
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#include "AuthCrypt.h"
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#include "Cryptography/HMACSHA1.h"
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#include "Cryptography/BigNumber.h"
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AuthCrypt::AuthCrypt() :
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_clientDecrypt(SHA_DIGEST_LENGTH), _serverEncrypt(SHA_DIGEST_LENGTH),
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_initialized(false)
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{ }
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void AuthCrypt::Init(BigNumber* K)
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{
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uint8 ServerEncryptionKey[SEED_KEY_SIZE] = { 0xCC, 0x98, 0xAE, 0x04, 0xE8, 0x97, 0xEA, 0xCA, 0x12, 0xDD, 0xC0, 0x93, 0x42, 0x91, 0x53, 0x57 };
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HmacHash serverEncryptHmac(SEED_KEY_SIZE, (uint8*)ServerEncryptionKey);
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uint8 *encryptHash = serverEncryptHmac.ComputeHash(K);
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uint8 ServerDecryptionKey[SEED_KEY_SIZE] = { 0xC2, 0xB3, 0x72, 0x3C, 0xC6, 0xAE, 0xD9, 0xB5, 0x34, 0x3C, 0x53, 0xEE, 0x2F, 0x43, 0x67, 0xCE };
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HmacHash clientDecryptHmac(SEED_KEY_SIZE, (uint8*)ServerDecryptionKey);
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uint8 *decryptHash = clientDecryptHmac.ComputeHash(K);
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//ARC4 _serverDecrypt(encryptHash);
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_clientDecrypt.Init(decryptHash);
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_serverEncrypt.Init(encryptHash);
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//ARC4 _clientEncrypt(decryptHash);
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// Drop first 1024 bytes, as WoW uses ARC4-drop1024.
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uint8 syncBuf[1024];
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memset(syncBuf, 0, 1024);
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_serverEncrypt.UpdateData(1024, syncBuf);
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//_clientEncrypt.UpdateData(1024, syncBuf);
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memset(syncBuf, 0, 1024);
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//_serverDecrypt.UpdateData(1024, syncBuf);
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_clientDecrypt.UpdateData(1024, syncBuf);
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_initialized = true;
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}
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void AuthCrypt::DecryptRecv(uint8 *data, size_t len)
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{
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if (!_initialized)
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return;
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_clientDecrypt.UpdateData(len, data);
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}
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void AuthCrypt::EncryptSend(uint8 *data, size_t len)
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{
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if (!_initialized)
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return;
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_serverEncrypt.UpdateData(len, data);
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}
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