Rearrange the file tree.

[u/mdw/catacomb] / xtea.h

diff --git a/xtea.h b/xtea.h
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--- a/xtea.h
+++ /dev/null
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-/* -*-c-*-
- *
- * $Id: xtea.h,v 1.4 2004/04/08 01:36:15 mdw Exp $
- *
- * The Extended Tiny Encryption Algorithm
- *
- * (c) 2000 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 Tiny Encryption Algorithm ----------------------------*
- *
- * XTEA is an amazingly simple 64-round Feistel network.  It's tiny, fairly
- * quick and surprisingly strong.  It was invented by David Wheeler and Roger
- * Needham.  It's unpatented.  XTEA is a new version of TEA, by the same
- * designers, which fixes some weaknesses in TEA's key schedule.
- *
- * This implementation uses big-endian byte order, following SCAN.
- */
-
-#ifndef CATACOMB_XTEA_H
-#define CATACOMB_XTEA_H
-
-#ifdef __cplusplus
-  extern "C" {
-#endif
-
-/*----- Header files ------------------------------------------------------*/
-
-#include <stddef.h>
-
-#include <mLib/bits.h>
-
-/*----- Magical numbers ---------------------------------------------------*/
-
-#define XTEA_BLKSZ 8
-#define XTEA_KEYSZ 16
-#define XTEA_CLASS (N, B, 64)
-
-extern const octet xtea_keysz[];
-
-/*----- Data structures ---------------------------------------------------*/
-
-typedef struct xtea_ctx {
-  unsigned r;
-  uint32 k[4];
-} xtea_ctx;
-
-/*----- Functions provided ------------------------------------------------*/
-
-/* --- @xtea_init@ --- *
- *
- * Arguments:  @xtea_ctx *k@ = pointer to key block
- *             @const void *buf@ = pointer to key buffer
- *             @size_t sz@ = size of key material
- *
- * Returns:    ---
- *
- * Use:                Initializes an XTEA key buffer.  The key buffer may be up to
- *             16 bytes long.
- */
-
-extern void xtea_init(xtea_ctx */*k*/, const void */*buf*/, size_t /*sz*/);
-
-/* --- @xtea_eblk@, @xtea_dblk@ --- *
- *
- * Arguments:  @const xtea_ctx *k@ = pointer to key block
- *             @const uint32 s[2]@ = pointer to source block
- *             @uint32 d[2]@ = pointer to xteatination block
- *
- * Returns:    ---
- *
- * Use:                Low-level block encryption and decryption.
- */
-
-extern void xtea_eblk(const xtea_ctx */*k*/,
-                     const uint32 */*s*/, uint32 */*d*/);
-extern void xtea_dblk(const xtea_ctx */*k*/,
-                     const uint32 */*s*/, uint32 */*d*/);
-
-/*----- That's all, folks -------------------------------------------------*/
-
-#ifdef __cplusplus
-  }
-#endif
-
-#endif