40 lines
1.1 KiB
C
40 lines
1.1 KiB
C
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/* threefish_invmix_c.c */
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/*
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This file is part of the ARM-Crypto-Lib.
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Copyright (C) 2006-2010 Daniel Otte (daniel.otte@rub.de)
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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 3 of the License, or
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(at your option) any later version.
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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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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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/*
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* \author Daniel Otte
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* \email daniel.otte@rub.de
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* \date 2009-03-21
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* \license GPLv3 or later
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*
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*
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*
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*/
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#include <stdint.h>
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#define X0 (((uint64_t*)data)[0])
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#define X1 (((uint64_t*)data)[1])
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void threefish_invmix(void* data, uint8_t rot){
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uint64_t x;
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x = X1;
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x ^= X0;
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X1 = ((x>>rot)|(x<<(64-rot)));
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X0 -= X1;
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}
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