mirror of
https://github.com/TrinityCore/TrinityCore.git
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210176fd91
- Fix a handful of 1/256 bugs with most significant byte zero in BigNumber - Get rid of (most of) the C-style arrays in authserver - CryptoRandom as a unified source for cryptographic randomness - Bring our other crypto APIs into 2020 - BigNumber usability improvements - Authserver is now actually readable as a result of all of the above
61 lines
1.8 KiB
C++
61 lines
1.8 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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#include <cstring>
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#include "CryptoHash.h"
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#ifndef TRINITY_SESSIONKEYGENERATOR_HPP
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#define TRINITY_SESSIONKEYGENERATOR_HPP
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template <typename Hash>
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class SessionKeyGenerator
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{
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public:
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template <typename C>
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SessionKeyGenerator(C const& buf) :
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o0it(o0.begin())
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{
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uint8 const* data = std::data(buf);
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size_t const len = std::size(buf);
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size_t const halflen = (len / 2);
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o1 = Hash::GetDigestOf(data, halflen);
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o2 = Hash::GetDigestOf(data + halflen, len - halflen);
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o0 = Hash::GetDigestOf(o1, o0, o2);
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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 (o0it == o0.end())
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{
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o0 = Hash::GetDigestOf(o1, o0, o2);
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o0it = o0.begin();
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}
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buf[i] = *(o0it++);
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}
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}
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private:
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typename Hash::Digest o0, o1, o2;
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typename Hash::Digest::const_iterator o0it;
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};
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#endif
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