linux/fs/reiserfs/hashes.c

/*
 * Keyed 32-bit hash function using TEA in a Davis-Meyer function
 *   H0 = Key
 *   Hi = E Mi(Hi-1) + Hi-1
 *
 * (see Applied Cryptography, 2nd edition, p448).
 *
 * Jeremy Fitzhardinge <[email protected]> 1998
 *
 * Jeremy has agreed to the contents of reiserfs/README. -Hans
 * Yura's function is added (04/07/2000)
 */

#include <linux/kernel.h>
#include "reiserfs.h"
#include <asm/types.h>

#define DELTA …
#define FULLROUNDS …
#define PARTROUNDS …

/* a, b, c, d - data; h0, h1 - accumulated hash */
#define TEACORE(rounds) …

u32 keyed_hash(const signed char *msg, int len)
{ … }

/*
 * What follows in this file is copyright 2000 by Hans Reiser, and the
 * licensing of what follows is governed by reiserfs/README
 */
u32 yura_hash(const signed char *msg, int len)
{ … }

u32 r5_hash(const signed char *msg, int len)
{ … }