+++ /dev/null
-/* -*-c-*-
- *
- * $Id: tiger.c,v 1.2 2004/04/08 01:36:15 mdw Exp $
- *
- * The Tiger hash function
- *
- * (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.
- */
-
-/*----- Header files ------------------------------------------------------*/
-
-#include <mLib/bits.h>
-
-#include "ghash-def.h"
-#include "hash.h"
-#include "tiger.h"
-#include "tiger-tab.h"
-#include "tiger-base.h"
-
-/*----- S-boxes -----------------------------------------------------------*/
-
-static const kludge64 s[4][256] = TIGER_S;
-
-/*----- Main code ---------------------------------------------------------*/
-
-/* --- @tiger_compress@ --- *
- *
- * Arguments: @tiger_ctx *ctx@ = pointer to context block
- * @const void *sbuf@ = pointer to buffer of appropriate size
- *
- * Returns: ---
- *
- * Use: Tiger compression function.
- */
-
-void tiger_compress(tiger_ctx *ctx, const void *sbuf)
-{
- kludge64 x[8];
- int i;
- const octet *p;
- for (i = 0, p = sbuf; i < 8; i++, p += 8)
- LOAD64_L_(x[i], p);
- TIGER_CORE(ctx->a, ctx->b, ctx->c, x);
-}
-
-/* --- @tiger_init@ --- *
- *
- * Arguments: @tiger_ctx *ctx@ = pointer to context block to initialize
- *
- * Returns: ---
- *
- * Use: Initializes a context block ready for hashing.
- */
-
-void tiger_init(tiger_ctx *ctx)
-{
- SET64(ctx->a, 0x01234567, 0x89abcdef);
- SET64(ctx->b, 0xfedcba98, 0x76543210);
- SET64(ctx->c, 0xf096a5b4, 0xc3b2e187);
- ctx->off = 0;
- ctx->nl = ctx->nh = 0;
-}
-
-/* --- @tiger_set@ --- *
- *
- * Arguments: @tiger_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.
- */
-
-void tiger_set(tiger_ctx *ctx, const void *buf, unsigned long count)
-{
- const octet *p = buf;
- LOAD64_L_(ctx->a, p + 0);
- LOAD64_L_(ctx->b, p + 8);
- LOAD64_L_(ctx->c, p + 16);
- ctx->off = 0;
- ctx->nl = U32(count);
- ctx->nh = U32(((count & ~MASK32) >> 16) >> 16);
-}
-
-/* --- @tiger_hash@ --- *
- *
- * Arguments: @tiger_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.
- */
-
-void tiger_hash(tiger_ctx *ctx, const void *buf, size_t sz)
-{
- HASH_BUFFER(TIGER, tiger, ctx, buf, sz);
-}
-
-/* --- @tiger_done@ --- *
- *
- * Arguments: @tiger_ctx *ctx@ = pointer to context block
- * @void *hash@ = pointer to output buffer
- *
- * Returns: ---
- *
- * Use: Returns the hash of the data read so far.
- */
-
-void tiger_done(tiger_ctx *ctx, void *hash)
-{
- octet *p = hash;
- HASH_PAD(TIGER, tiger, ctx, 0x01u, 0, 8);
- STORE32_L(ctx->buf + TIGER_BUFSZ - 8, ctx->nl << 3);
- STORE32_L(ctx->buf + TIGER_BUFSZ - 4, (ctx->nl >> 29) | (ctx->nh << 3));
- tiger_compress(ctx, ctx->buf);
- STORE64_L_(p + 0, ctx->a);
- STORE64_L_(p + 8, ctx->b);
- STORE64_L_(p + 16, ctx->c);
-}
-
-/* --- @tiger_state@ --- *
- *
- * Arguments: @tiger_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 @tiger_set@.
- */
-
-unsigned long tiger_state(tiger_ctx *ctx, void *state)
-{
- octet *p = state;
- STORE64_L_(p + 0, ctx->a);
- STORE64_L_(p + 8, ctx->b);
- STORE64_L_(p + 16, ctx->c);
- return (ctx->nl | ((ctx->nh << 16) << 16));
-}
-
-/* --- Generic interface --- */
-
-GHASH_DEF(TIGER, tiger)
-
-/* --- Test code --- */
-
-HASH_TEST(TIGER, tiger)
-
-/*----- That's all, folks -------------------------------------------------*/