X-Git-Url: https://git.distorted.org.uk/u/mdw/catacomb/blobdiff_plain/ba6e6b64033b1f9de49feccb5c9cd438354481f7..0f00dc4c8eb47e67bc0f148c2dd109f73a451e0a:/rmd320.h

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-/* -*-c-*-
- *
- * $Id: rmd320.h,v 1.3 2004/04/08 01:36:15 mdw Exp $
- *
- * The RIPEMD-320 message digest function
- *
- * (c) 1998 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 RIPEMD-320 hash function -----------------------------*
- *
- * RIPEMD-320 was invented by Hans Dobbertin, Antoon Bosselaers and Bart
- * Preneel.  It's a double-width version of RIPEMD-160, constructed simply by
- * not gluing together the two parallel computations which RIPEMD-160 usually
- * does in its compression function.  The authors warn that, while its output
- * is twice as wide as that of RIPEMD-160, they don't expect it to offer any
- * more security.
- */
-
-#ifndef CATACOMB_RMD320_H
-#define CATACOMB_RMD320_H
-
-#ifdef __cplusplus
-  extern "C" {
-#endif
-
-/*----- Header files ------------------------------------------------------*/
-
-#include <mLib/bits.h>
-
-#ifndef CATACOMB_GHASH_H
-#  include "ghash.h"
-#endif
-
-/*----- Magic numbers -----------------------------------------------------*/
-
-#define RMD320_BUFSZ 64
-#define RMD320_HASHSZ 40
-#define RMD320_STATESZ 40
-
-/*----- Data structures ---------------------------------------------------*/
-
-typedef struct rmd320_ctx {
-  uint32 a, b, c, d, e;			/* Chaining variables */
-  uint32 A, B, C, D, E;			/* More chaining variables */
-  uint32 nl, nh;			/* Byte count so far */
-  unsigned off;				/* Offset into buffer */
-  octet buf[RMD320_BUFSZ];		/* Accumulation buffer */
-} rmd320_ctx;
-
-/*----- Functions provided ------------------------------------------------*/
-
-/* --- @rmd320_compress@ --- *
- *
- * Arguments:	@rmd320_ctx *ctx@ = pointer to context block
- *		@const void *sbuf@ = pointer to buffer of appropriate size
- *
- * Returns:	---
- *
- * Use:		RIPEMD-320 compression function.
- */
-
-extern void rmd320_compress(rmd320_ctx */*ctx*/, const void */*sbuf*/);
-
-/* --- @rmd320_init@ --- *
- *
- * Arguments:	@rmd320_ctx *ctx@ = pointer to context block to initialize
- *
- * Returns:	---
- *
- * Use:		Initializes a context block ready for hashing.
- */
-
-extern void rmd320_init(rmd320_ctx */*ctx*/);
-
-/* --- @rmd320_set@ --- *
- *
- * Arguments:	@rmd320_ctx *ctx@ = pointer to context block
- *		@const void *buf@ = pointer to state buffer
- *		@unsigned long count@ = current count of bytes processed
- *
- * Returns:	---
- *
- * Use:		Initializes a context block from a given state.  This is
- *		useful in cases where the initial hash state is meant to be
- *		secret, e.g., for NMAC and HMAC support.
- */
-
-extern void rmd320_set(rmd320_ctx */*ctx*/,
-		       const void */*buf*/, unsigned long /*count*/);
-
-/* --- @rmd320_hash@ --- *
- *
- * Arguments:	@rmd320_ctx *ctx@ = pointer to context block
- *		@const void *buf@ = buffer of data to hash
- *		@size_t sz@ = size of buffer to hash
- *
- * Returns:	---
- *
- * Use:		Hashes a buffer of data.  The buffer may be of any size and
- *		alignment.
- */
-
-extern void rmd320_hash(rmd320_ctx */*ctx*/,
-			const void */*buf*/, size_t /*sz*/);
-
-/* --- @rmd320_done@ --- *
- *
- * Arguments:	@rmd320_ctx *ctx@ = pointer to context block
- *		@void *hash@ = pointer to output buffer
- *
- * Returns:	---
- *
- * Use:		Returns the hash of the data read so far.
- */
-
-extern void rmd320_done(rmd320_ctx */*ctx*/, void */*hash*/);
-
-/* --- @rmd320_state@ --- *
- *
- * Arguments:	@rmd320_ctx *ctx@ = pointer to context
- *		@void *state@ = pointer to buffer for current state
- *
- * Returns:	Number of bytes written to the hash function so far.
- *
- * Use:		Returns the current state of the hash function such that
- *		it can be passed to @rmd320_set@.
- */
-
-extern unsigned long rmd320_state(rmd320_ctx */*ctx*/, void */*state*/);
-
-/*----- Generic hash interface --------------------------------------------*/
-
-extern const gchash rmd320;
-
-/*----- That's all, folks -------------------------------------------------*/
-
-#ifdef __cplusplus
-  }
-#endif
-
-#endif