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 * \email daniel.otte@rub.de
34 typedef uint8_t noekeon_ctx_t[16];
36 /** \fn void noekeon_enc(void* buffer, void* key)
37 * \brief noekeon encrytion funtion
39 * This function encrypts a block (64 bit = 8 byte) with the noekeon encrytion
40 * algorithm. Due to the two modes of noekeon (direct mode and indirect mode)
41 * the second parameter either points directly to the key (direct mode) or to a
42 * context generated by the noekeon_init() function (indirect mode)
43 * \param buffer pointer to the 64 bit (8 byte) block to encrypt
44 * \param key pointer to either the key (128 bit = 16 byte; direct mode) or
45 * to the context (indirect mode)
47 void noekeon_enc(void* buffer, const void* key);
49 /** \fn void noekeon_enc(void* buffer, void* key)
50 * \brief noekeon encrytion funtion
52 * This function decrypts a block (64 bit = 8 byte) encrypted with the noekeon
53 * encrytion algorithm. Due to the two modes of noekeon (direct mode and
54 * indirect mode) the second parameter either points directly to the key
55 * (direct mode) or to a context generated by the noekeon_init() function
57 * \param buffer pointer to the 64 bit (8 byte) block to decrypt
58 * \param key pointer to either the key (128 bit = 16 byte; direct mode) or
59 * to the context (indirect mode)
61 void noekeon_dec(void* buffer, const void* key);
64 /** \fn void noekeon_init(void* key, noekeon_ctx_t* ctx)
65 * \brief noekeon context generation function for indirect mode
67 * This function generates a context from the supplied key for using
68 * noekeon in indirect mode. For using noekeon in direct mode supply the key
69 * direct to the noekeon_enc() and noekeon_dec() functions
70 * \param key pointer to the key (128 bit = 16 byte)
71 * \param ctx pointer to the context to fill with key material
72 * to the context (indirect mode)
74 void noekeon_init(const void* key, noekeon_ctx_t* ctx);