3 * $Id: mars.h,v 1.1 2001/04/29 18:11:19 mdw Exp $
5 * The MARS block cipher
7 * (c) 2001 Straylight/Edgeware
10 /*----- Licensing notice --------------------------------------------------*
12 * This file is part of Catacomb.
14 * Catacomb is free software; you can redistribute it and/or modify
15 * it under the terms of the GNU Library General Public License as
16 * published by the Free Software Foundation; either version 2 of the
17 * License, or (at your option) any later version.
19 * Catacomb is distributed in the hope that it will be useful,
20 * but WITHOUT ANY WARRANTY; without even the implied warranty of
21 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
22 * GNU Library General Public License for more details.
24 * You should have received a copy of the GNU Library General Public
25 * License along with Catacomb; if not, write to the Free
26 * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
30 /*----- Revision history --------------------------------------------------*
33 * Revision 1.1 2001/04/29 18:11:19 mdw
34 * New block cipher MARS.
38 /*----- Notes on the MARS block cipher ------------------------------------*
40 * MARS was IBM's submission to the AES contest. It was designed by a number
41 * of clever people at the T. J. Watson labs, and made it to the second round
42 * of the contest. Unfortunately, MARS is rather messy. There are some
43 * awkward corner cases in the key schedule algorithm, for example, that show
47 #ifndef CATACOMB_MARS_H
48 #define CATACOMB_MARS_H
54 /*----- Header files ------------------------------------------------------*/
58 #include <mLib/bits.h>
60 /*----- Magical numbers ---------------------------------------------------*/
64 #define MARS_CLASS (N, L, 128)
66 extern const octet mars_keysz
[];
68 /*----- Data structures ---------------------------------------------------*/
70 typedef struct mars_ctx
{
74 /*----- Functions provided ------------------------------------------------*/
76 /* --- @mars_init@ --- *
78 * Arguments: @mars_ctx *k@ = pointer to key block to fill in
79 * @const void *buf@ = pointer to buffer of key material
80 * @size_t sz@ = size of key material
84 * Use: Initializes a MARS key buffer. MARS accepts key sizes
85 * between 128 and 448 bits which are a multiple of 32 bits.
88 extern void mars_init(mars_ctx */
*k*/
,
89 const void */
*buf*/
, size_t /*sz*/);
91 /* --- @mars_eblk@, @mars_dblk@ --- *
93 * Arguments: @const mars_ctx *k@ = pointer to key block
94 * @const uint32 s[4]@ = pointer to source block
95 * @uint32 d[4]@ = pointer to destination block
99 * Use: Low-level block encryption and decryption.
102 extern void mars_eblk(const mars_ctx */
*k*/
,
103 const uint32 */
*s*/
, uint32 */
*d*/
);
105 extern void mars_dblk(const mars_ctx */
*k*/
,
106 const uint32 */
*s*/
, uint32 */
*d*/
);
108 /*----- That's all, folks -------------------------------------------------*/