mirror of
https://github.com/TrinityCore/TrinityCore.git
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83 lines
2.1 KiB
C++
83 lines
2.1 KiB
C++
/*
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* This file is part of the TrinityCore Project. See AUTHORS file for Copyright information
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef SessionKeyGeneration_h__
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#define SessionKeyGeneration_h__
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#include "Define.h"
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#include <cstring>
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template<class Hash>
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class SessionKeyGenerator
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{
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public:
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SessionKeyGenerator(uint8* buff, uint32 size)
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{
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uint32 halfSize = size / 2;
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sh.Initialize();
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sh.UpdateData(buff, halfSize);
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sh.Finalize();
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memcpy(o1, sh.GetDigest(), Hash::DigestLength::value);
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sh.Initialize();
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sh.UpdateData(buff + halfSize, size - halfSize);
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sh.Finalize();
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memcpy(o2, sh.GetDigest(), Hash::DigestLength::value);
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memset(o0, 0x00, Hash::DigestLength::value);
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FillUp();
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}
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void Generate(uint8* buf, uint32 sz)
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{
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for (uint32 i = 0; i < sz; ++i)
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{
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if (taken == Hash::DigestLength::value)
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FillUp();
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buf[i] = o0[taken];
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taken++;
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}
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}
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private:
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void FillUp()
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{
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sh.Initialize();
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sh.UpdateData(o1, Hash::DigestLength::value);
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sh.UpdateData(o0, Hash::DigestLength::value);
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sh.UpdateData(o2, Hash::DigestLength::value);
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sh.Finalize();
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memcpy(o0, sh.GetDigest(), Hash::DigestLength::value);
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taken = 0;
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}
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Hash sh;
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uint32 taken;
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uint8 o0[Hash::DigestLength::value];
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uint8 o1[Hash::DigestLength::value];
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uint8 o2[Hash::DigestLength::value];
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};
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#endif // SessionKeyGeneration_h__
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