3 This file is part of the AVR-Crypto-Lib.
4 Copyright (C) 2008 Daniel Otte (daniel.otte@rub.de)
6 This program is free software: you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation, either version 3 of the License, or
9 (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program. If not, see <http://www.gnu.org/licenses/>.
24 * Description: Implementation of the RC6 cipher algorithm.
25 * This implementation is restricted to 32-bit words, but free in the choice of number of rounds (0 to 255).
35 typedef struct rc6_ctx_st{
36 uint8_t rounds; /* specifys the number of rounds; default: 20 */
37 uint32_t* S; /* the round-keys */
41 uint8_t rc6_init(void* key, uint16_t keylength_b, rc6_ctx_t *s);
43 uint8_t rc6_initl(void* key, uint16_t keylength_b, uint8_t rounds, rc6_ctx_t *s);
45 void rc6_enc(void* block, rc6_ctx_t *s);
47 void rc6_dec(void* block, rc6_ctx_t *s);
49 void rc6_free(rc6_ctx_t *s);