Rearrange the file tree.

[u/mdw/catacomb] / tea.h

diff --git a/tea.h b/tea.h
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-/* -*-c-*-
- *
- * $Id: tea.h,v 1.3 2004/04/08 01:36:15 mdw Exp $
- *
- * The 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 ----------------------------*
- *
- * TEA 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.  The keyspace is has only 126 effective bits,
- * and there are related-key attacks.  If you want these fixed, use XTEA.
- *
- * This implementation uses big-endian byte order, following SCAN.
- */
-
-#ifndef CATACOMB_TEA_H
-#define CATACOMB_TEA_H
-
-#ifdef __cplusplus
-  extern "C" {
-#endif
-
-/*----- Header files ------------------------------------------------------*/
-
-#include <stddef.h>
-
-#include <mLib/bits.h>
-
-/*----- Magical numbers ---------------------------------------------------*/
-
-#define TEA_BLKSZ 8
-#define TEA_KEYSZ 16
-#define TEA_CLASS (N, B, 64)
-
-extern const octet tea_keysz[];
-
-/*----- Data structures ---------------------------------------------------*/
-
-typedef struct tea_ctx {
-  unsigned r;
-  uint32 ka, kb, kc, kd;
-} tea_ctx;
-
-/*----- Functions provided ------------------------------------------------*/
-
-/* --- @tea_init@ --- *
- *
- * Arguments:  @tea_ctx *k@ = pointer to key block
- *             @const void *buf@ = pointer to key buffer
- *             @size_t sz@ = size of key material
- *
- * Returns:    ---
- *
- * Use:                Initializes a TEA key buffer.  The key buffer may be up to 16
- *             bytes long.
- */
-
-extern void tea_init(tea_ctx */*k*/, const void */*buf*/, size_t /*sz*/);
-
-/* --- @tea_eblk@, @tea_dblk@ --- *
- *
- * Arguments:  @const tea_ctx *k@ = pointer to key block
- *             @const uint32 s[2]@ = pointer to source block
- *             @uint32 d[2]@ = pointer to teatination block
- *
- * Returns:    ---
- *
- * Use:                Low-level block encryption and decryption.
- */
-
-extern void tea_eblk(const tea_ctx */*k*/,
-                    const uint32 */*s*/, uint32 */*d*/);
-extern void tea_dblk(const tea_ctx */*k*/,
-                    const uint32 */*s*/, uint32 */*d*/);
-
-/*----- That's all, folks -------------------------------------------------*/
-
-#ifdef __cplusplus
-  }
-#endif
-
-#endif