3 This file is part of the Crypto-avr-lib/microcrypt-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 CAST5 (aka CAST-128) cipher algorithm as described in RFC 2144
38 typedef enum{false=0,true=1} bool;
44 typedef struct cast5_ctx_st{
46 uint8_t rotl[8]; /* 4 bit from every rotation key is stored here */
47 uint8_t roth[2]; /* 1 bit from every rotation key is stored here */
51 void cast5_init(cast5_ctx_t* s, uint8_t* key, uint8_t keylength);
52 void cast5_enc(cast5_ctx_t *s, void* block);
53 void cast5_dec(cast5_ctx_t *s, void* block);