48 lines
1.4 KiB
C
48 lines
1.4 KiB
C
/* serpent.h */
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/*
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This file is part of the ARM-Crypto-Lib.
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Copyright (C) 2008 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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/** \file serpent.h
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* \author Daniel Otte
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* \license GPLv3
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* \brief a implementation of the serpent cipher for avr microcontrollers
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*/
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#ifndef SERPENT_H_
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#define SERPENT_H_
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#include <stdint.h>
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typedef uint32_t serpent_subkey_t[4];
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typedef struct serpent_ctx_st {
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serpent_subkey_t k[33];
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} serpent_ctx_t;
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#define SERPENT_KEY128 128
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#define SERPENT_KEY192 192
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#define SERPENT_KEY256 256
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/* key must be 256bit (32 byte) large! */
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void serpent_init(const void* key, uint16_t keysize_b, serpent_ctx_t* ctx);
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void serpent_enc(void* buffer, const serpent_ctx_t* ctx);
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void serpent_dec(void* buffer, const serpent_ctx_t* ctx);
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#endif /*SERPENT_H_*/
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