53 lines
1.5 KiB
C
53 lines
1.5 KiB
C
/* rc6.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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/*
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* File: rc6.h
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* Author: Daniel Otte
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* Date: 06.08.2006
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* License: GPL
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* Description: Implementation of the RC6 cipher algorithm.
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* This implementation is restricted to 32-bit words, but free in the choice of number of rounds (0 to 255).
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* so it is RC6-32/r/b
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*/
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#ifndef RC6_H_
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#define RC6_H_
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#include <stdint.h>
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typedef struct rc6_ctx_st{
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uint8_t rounds; /* specifies the number of rounds; default: 20 */
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uint32_t* S; /* the round-keys */
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} rc6_ctx_t;
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void rc6_init(const void* key, uint16_t keylength_b, rc6_ctx_t *s);
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uint8_t rc6_initl(const void* key, uint16_t keylength_b, uint8_t rounds, rc6_ctx_t *s);
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void rc6_enc(void* block, rc6_ctx_t *s);
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void rc6_dec(void* block, rc6_ctx_t *s);
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void rc6_free(rc6_ctx_t *s);
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#endif /* RC6_H_ */
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