Rearrange the file tree.

[u/mdw/catacomb] / desx.h

diff --git a/desx.h b/desx.h
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-/* -*-c-*-
- *
- * $Id: desx.h,v 1.2 2004/04/08 01:36:15 mdw Exp $
- *
- * The DESX algorithm
- *
- * (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 DESX -----------------------------------------------------*
- *
- * DESX was designed by Ron Rivest in 1986 as a simple and cheap way to
- * strengthen DES against exhaustive search.  It also increases the
- * difficulty of differential and linear attacks.
- */
-
-#ifndef CATACOMB_DESX_H
-#define CATACOMB_DESX_H
-
-#ifdef __cplusplus
-  extern "C" {
-#endif
-
-/*----- Header files ------------------------------------------------------*/
-
-#include <stddef.h>
-
-#include <mLib/bits.h>
-
-#ifndef CATACOMB_DES_H
-#  include "des.h"
-#endif
-
-/*----- Magical numbers ---------------------------------------------------*/
-
-#define DESX_BLKSZ 8
-#define DESX_KEYSZ 23
-#define DESX_CLASS (N, B, 64)
-
-extern const octet desx_keysz[];
-
-/*----- Data structures ---------------------------------------------------*/
-
-typedef struct desx_ctx {
-  des_ctx k;
-  uint32 prea, preb;
-  uint32 posta, postb;
-} desx_ctx;
-
-/*----- Functions provided ------------------------------------------------*/
-
-/* --- @desx_init@ --- *
- *
- * Arguments:  @desx_ctx *k@ = pointer to key block
- *             @const void *buf@ = pointer to key buffer
- *             @size_t sz@ = size of key material
- *
- * Returns:    ---
- *
- * Use:                Initializes a DESX key buffer.  The key buffer contains, in
- *             order, an optional 8-byte pre-whitening key, a single-DES key
- *             (either 7 or 8 bytes), and an optional 8-byte port-whitening
- *             key.  If no whitening keys are specified, the algorithm
- *             becomes the same as single-DES.
- */
-
-extern void desx_init(desx_ctx */*k*/, const void */*buf*/, size_t /*sz*/);
-
-/* --- @desx_eblk@, @desx_dblk@ --- *
- *
- * Arguments:  @const desx_ctx *k@ = pointer to key block
- *             @const uint32 s[2]@ = pointer to source block
- *             @uint32 d[2]@ = pointer to destination block
- *
- * Returns:    ---
- *
- * Use:                Low-level block encryption and decryption.
- */
-
-extern void desx_eblk(const desx_ctx */*k*/,
-                     const uint32 */*s*/, uint32 */*d*/);
-extern void desx_dblk(const desx_ctx */*k*/,
-                     const uint32 */*s*/, uint32 */*d*/);
-
-/*----- That's all, folks -------------------------------------------------*/
-
-#ifdef __cplusplus
-  }
-#endif
-
-#endif