48 lines
1.4 KiB
C
48 lines
1.4 KiB
C
/* serpent.h */
|
|
/*
|
|
This file is part of the Crypto-avr-lib/microcrypt-lib.
|
|
Copyright (C) 2008 Daniel Otte (daniel.otte@rub.de)
|
|
|
|
This program is free software: you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation, either version 3 of the License, or
|
|
(at your option) any later version.
|
|
|
|
This program is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
/** \file serpent.h
|
|
* \author Daniel Otte
|
|
* \license GPLv3
|
|
* \brief a implementation of the serpent cipher for avr microcontrollers
|
|
*/
|
|
|
|
#ifndef SERPENT_H_
|
|
#define SERPENT_H_
|
|
|
|
#include <stdint.h>
|
|
|
|
typedef uint32_t serpent_subkey_t[4];
|
|
|
|
typedef struct serpent_ctx_st {
|
|
serpent_subkey_t k[33];
|
|
} serpent_ctx_t;
|
|
|
|
#define SERPENT_KEY128 128
|
|
#define SERPENT_KEY192 192
|
|
#define SERPENT_KEY256 256
|
|
|
|
|
|
/* key must be 256bit (32 byte) large! */
|
|
void serpent_init(const void* key, uint16_t keysize_b, serpent_ctx_t* ctx);
|
|
void serpent_enc(void* buffer, const serpent_ctx_t* ctx);
|
|
void serpent_dec(void* buffer, const serpent_ctx_t* ctx);
|
|
|
|
|
|
#endif /*SERPENT_H_*/
|