67 lines
1.9 KiB
C++
67 lines
1.9 KiB
C++
/*
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* Copyright (C) 2006-2016 Jacek Sieka, arnetheduck on gmail point com
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#ifndef ADCHPP_TIGER_HASH_H
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#define ADCHPP_TIGER_HASH_H
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namespace adchpp {
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class TigerHash : private boost::noncopyable {
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public:
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/** Hash size */
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static const size_t BITS = 192;
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static const size_t BYTES = BITS / 8;
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TigerHash() : pos(0) {
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res[0]=_ULL(0x0123456789ABCDEF);
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res[1]=_ULL(0xFEDCBA9876543210);
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res[2]=_ULL(0xF096A5B4C3B2E187);
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}
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TigerHash(uint64_t pos, uint64_t initial_res[3]) : pos(pos) {
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res[0] = initial_res[0];
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res[1] = initial_res[1];
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res[2] = initial_res[2];
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}
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~TigerHash() { }
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/** Calculates the Tiger hash of the data. */
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ADCHPP_DLL void update(const void* data, size_t len);
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/** Call once all data has been processed. */
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ADCHPP_DLL uint8_t* finalize();
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uint8_t* getResult() { return (uint8_t*) res; }
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private:
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enum { BLOCK_SIZE = 512/8 };
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/** 512 bit blocks for the compress function */
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uint8_t tmp[512/8];
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/** State / final hash value */
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uint64_t res[3];
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/** Total number of bytes compressed */
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uint64_t pos;
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/** S boxes */
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static uint64_t table[];
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void tigerCompress(const uint64_t* data, uint64_t state[3]);
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};
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}
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#endif // _TIGER_HASH
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