X-Git-Url: https://git.distorted.org.uk/u/mdw/catacomb/blobdiff_plain/ba6e6b64033b1f9de49feccb5c9cd438354481f7..0f00dc4c8eb47e67bc0f148c2dd109f73a451e0a:/mars.h

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-/* -*-c-*-
- *
- * $Id: mars.h,v 1.2 2004/04/08 01:36:15 mdw Exp $
- *
- * The MARS block cipher
- *
- * (c) 2001 Straylight/Edgeware
- */
-
-/*----- Licensing notice --------------------------------------------------*
- *
- * This file is part of Catacomb.
- *
- * Catacomb is free software; you can redistribute it and/or modify
- * it under the terms of the GNU Library General Public License as
- * published by the Free Software Foundation; either version 2 of the
- * License, or (at your option) any later version.
- *
- * Catacomb is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Library General Public License for more details.
- *
- * You should have received a copy of the GNU Library General Public
- * License along with Catacomb; if not, write to the Free
- * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
- * MA 02111-1307, USA.
- */
-
-/*----- Notes on the MARS block cipher ------------------------------------*
- *
- * MARS was IBM's submission to the AES contest.  It was designed by a number
- * of clever people at the T. J. Watson labs, and made it to the second round
- * of the contest.  Unfortunately, MARS is rather messy.  There are some
- * awkward corner cases in the key schedule algorithm, for example, that show
- * up very rarely.
- */
-
-#ifndef CATACOMB_MARS_H
-#define CATACOMB_MARS_H
-
-#ifdef __cplusplus
-  extern "C" {
-#endif
-
-/*----- Header files ------------------------------------------------------*/
-
-#include <stddef.h>
-
-#include <mLib/bits.h>
-
-/*----- Magical numbers ---------------------------------------------------*/
-
-#define MARS_BLKSZ 16
-#define MARS_KEYSZ 32
-#define MARS_CLASS (N, L, 128)
-
-extern const octet mars_keysz[];
-
-/*----- Data structures ---------------------------------------------------*/
-
-typedef struct mars_ctx {
-  uint32 k[40];
-} mars_ctx;
-
-/*----- Functions provided ------------------------------------------------*/
-
-/* --- @mars_init@ --- *
- *
- * Arguments:	@mars_ctx *k@ = pointer to key block to fill in
- *		@const void *buf@ = pointer to buffer of key material
- *		@size_t sz@ = size of key material
- *
- * Returns:	---
- *
- * Use:		Initializes a MARS key buffer.  MARS accepts key sizes
- *		between 128 and 448 bits which are a multiple of 32 bits.
- */
-
-extern void mars_init(mars_ctx */*k*/,
-		      const void */*buf*/, size_t /*sz*/);
-
-/* --- @mars_eblk@, @mars_dblk@ --- *
- *
- * Arguments:	@const mars_ctx *k@ = pointer to key block
- *		@const uint32 s[4]@ = pointer to source block
- *		@uint32 d[4]@ = pointer to destination block
- *
- * Returns:	---
- *
- * Use:		Low-level block encryption and decryption.
- */
-
-extern void mars_eblk(const mars_ctx */*k*/,
-		      const uint32 */*s*/, uint32 */*d*/);
-
-extern void mars_dblk(const mars_ctx */*k*/,
-		      const uint32 */*s*/, uint32 */*d*/);
-
-/*----- That's all, folks -------------------------------------------------*/
-
-#ifdef __cplusplus
-  }
-#endif
-
-#endif