+++ /dev/null
-/* -*-c-*-
- *
- * $Id: rmd128.c,v 1.2 2004/04/08 01:36:15 mdw Exp $
- *
- * The RIPEMD-128 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.
- */
-
-/*----- Header files ------------------------------------------------------*/
-
-#include <mLib/bits.h>
-
-#include "ghash.h"
-#include "ghash-def.h"
-#include "hash.h"
-#include "rmd128.h"
-
-/*----- Main code ---------------------------------------------------------*/
-
-/* --- @rmd128_compress@ --- *
- *
- * Arguments: @rmd128_ctx *ctx@ = pointer to context block
- * @const void *sbuf@ = pointer to buffer of appropriate size
- *
- * Returns: ---
- *
- * Use: RIPEMD-128 compression function.
- */
-
-void rmd128_compress(rmd128_ctx *ctx, const void *sbuf)
-{
- uint32 a, b, c, d;
- uint32 A, B, C, D;
- uint32 buf[16];
-
- /* --- Fetch the chaining variables --- */
-
- a = A = ctx->a;
- b = B = ctx->b;
- c = C = ctx->c;
- d = D = ctx->d;
-
- /* --- Fetch the buffer contents --- */
-
- {
- int i;
- const octet *p;
-
- for (i = 0, p = sbuf; i < 16; i++, p += 4)
- buf[i] = LOAD32_L(p);
- }
-
- /* --- Definitions for round functions --- */
-
-#define F(x, y, z) ((x) ^ (y) ^ (z))
-#define G(x, y, z) (((x) & (y)) | (~(x) & (z)))
-#define H(x, y, z) (((x) | ~(y)) ^ (z))
-#define I(x, y, z) (((x) & (z)) | ((y) & ~(z)))
-
-#define T(w, x, y, z, i, r, f, k) do { \
- uint32 _t = w + f(x, y, z) + buf[i] + k; \
- w = ROL32(_t, r); \
-} while (0)
-
-#define F1(w, x, y, z, i, r) T(w, x, y, z, i, r, F, 0x00000000)
-#define G1(w, x, y, z, i, r) T(w, x, y, z, i, r, G, 0x5a827999)
-#define H1(w, x, y, z, i, r) T(w, x, y, z, i, r, H, 0x6ed9eba1)
-#define I1(w, x, y, z, i, r) T(w, x, y, z, i, r, I, 0x8f1bbcdc)
-
-#define F2(w, x, y, z, i, r) T(w, x, y, z, i, r, I, 0x50a28be6)
-#define G2(w, x, y, z, i, r) T(w, x, y, z, i, r, H, 0x5c4dd124)
-#define H2(w, x, y, z, i, r) T(w, x, y, z, i, r, G, 0x6d703ef3)
-#define I2(w, x, y, z, i, r) T(w, x, y, z, i, r, F, 0x00000000)
-
- /* --- First the left hand side --- */
-
- F1(a, b, c, d, 0, 11);
- F1(d, a, b, c, 1, 14);
- F1(c, d, a, b, 2, 15);
- F1(b, c, d, a, 3, 12);
- F1(a, b, c, d, 4, 5);
- F1(d, a, b, c, 5, 8);
- F1(c, d, a, b, 6, 7);
- F1(b, c, d, a, 7, 9);
- F1(a, b, c, d, 8, 11);
- F1(d, a, b, c, 9, 13);
- F1(c, d, a, b, 10, 14);
- F1(b, c, d, a, 11, 15);
- F1(a, b, c, d, 12, 6);
- F1(d, a, b, c, 13, 7);
- F1(c, d, a, b, 14, 9);
- F1(b, c, d, a, 15, 8);
-
- G1(a, b, c, d, 7, 7);
- G1(d, a, b, c, 4, 6);
- G1(c, d, a, b, 13, 8);
- G1(b, c, d, a, 1, 13);
- G1(a, b, c, d, 10, 11);
- G1(d, a, b, c, 6, 9);
- G1(c, d, a, b, 15, 7);
- G1(b, c, d, a, 3, 15);
- G1(a, b, c, d, 12, 7);
- G1(d, a, b, c, 0, 12);
- G1(c, d, a, b, 9, 15);
- G1(b, c, d, a, 5, 9);
- G1(a, b, c, d, 2, 11);
- G1(d, a, b, c, 14, 7);
- G1(c, d, a, b, 11, 13);
- G1(b, c, d, a, 8, 12);
-
- H1(a, b, c, d, 3, 11);
- H1(d, a, b, c, 10, 13);
- H1(c, d, a, b, 14, 6);
- H1(b, c, d, a, 4, 7);
- H1(a, b, c, d, 9, 14);
- H1(d, a, b, c, 15, 9);
- H1(c, d, a, b, 8, 13);
- H1(b, c, d, a, 1, 15);
- H1(a, b, c, d, 2, 14);
- H1(d, a, b, c, 7, 8);
- H1(c, d, a, b, 0, 13);
- H1(b, c, d, a, 6, 6);
- H1(a, b, c, d, 13, 5);
- H1(d, a, b, c, 11, 12);
- H1(c, d, a, b, 5, 7);
- H1(b, c, d, a, 12, 5);
-
- I1(a, b, c, d, 1, 11);
- I1(d, a, b, c, 9, 12);
- I1(c, d, a, b, 11, 14);
- I1(b, c, d, a, 10, 15);
- I1(a, b, c, d, 0, 14);
- I1(d, a, b, c, 8, 15);
- I1(c, d, a, b, 12, 9);
- I1(b, c, d, a, 4, 8);
- I1(a, b, c, d, 13, 9);
- I1(d, a, b, c, 3, 14);
- I1(c, d, a, b, 7, 5);
- I1(b, c, d, a, 15, 6);
- I1(a, b, c, d, 14, 8);
- I1(d, a, b, c, 5, 6);
- I1(c, d, a, b, 6, 5);
- I1(b, c, d, a, 2, 12);
-
- /* --- And then the right hand side --- */
-
- F2(A, B, C, D, 5, 8);
- F2(D, A, B, C, 14, 9);
- F2(C, D, A, B, 7, 9);
- F2(B, C, D, A, 0, 11);
- F2(A, B, C, D, 9, 13);
- F2(D, A, B, C, 2, 15);
- F2(C, D, A, B, 11, 15);
- F2(B, C, D, A, 4, 5);
- F2(A, B, C, D, 13, 7);
- F2(D, A, B, C, 6, 7);
- F2(C, D, A, B, 15, 8);
- F2(B, C, D, A, 8, 11);
- F2(A, B, C, D, 1, 14);
- F2(D, A, B, C, 10, 14);
- F2(C, D, A, B, 3, 12);
- F2(B, C, D, A, 12, 6);
-
- G2(A, B, C, D, 6, 9);
- G2(D, A, B, C, 11, 13);
- G2(C, D, A, B, 3, 15);
- G2(B, C, D, A, 7, 7);
- G2(A, B, C, D, 0, 12);
- G2(D, A, B, C, 13, 8);
- G2(C, D, A, B, 5, 9);
- G2(B, C, D, A, 10, 11);
- G2(A, B, C, D, 14, 7);
- G2(D, A, B, C, 15, 7);
- G2(C, D, A, B, 8, 12);
- G2(B, C, D, A, 12, 7);
- G2(A, B, C, D, 4, 6);
- G2(D, A, B, C, 9, 15);
- G2(C, D, A, B, 1, 13);
- G2(B, C, D, A, 2, 11);
-
- H2(A, B, C, D, 15, 9);
- H2(D, A, B, C, 5, 7);
- H2(C, D, A, B, 1, 15);
- H2(B, C, D, A, 3, 11);
- H2(A, B, C, D, 7, 8);
- H2(D, A, B, C, 14, 6);
- H2(C, D, A, B, 6, 6);
- H2(B, C, D, A, 9, 14);
- H2(A, B, C, D, 11, 12);
- H2(D, A, B, C, 8, 13);
- H2(C, D, A, B, 12, 5);
- H2(B, C, D, A, 2, 14);
- H2(A, B, C, D, 10, 13);
- H2(D, A, B, C, 0, 13);
- H2(C, D, A, B, 4, 7);
- H2(B, C, D, A, 13, 5);
-
- I2(A, B, C, D, 8, 15);
- I2(D, A, B, C, 6, 5);
- I2(C, D, A, B, 4, 8);
- I2(B, C, D, A, 1, 11);
- I2(A, B, C, D, 3, 14);
- I2(D, A, B, C, 11, 14);
- I2(C, D, A, B, 15, 6);
- I2(B, C, D, A, 0, 14);
- I2(A, B, C, D, 5, 6);
- I2(D, A, B, C, 12, 9);
- I2(C, D, A, B, 2, 12);
- I2(B, C, D, A, 13, 9);
- I2(A, B, C, D, 9, 12);
- I2(D, A, B, C, 7, 5);
- I2(C, D, A, B, 10, 15);
- I2(B, C, D, A, 14, 8);
-
- /* --- Recombine the two halves --- */
-
- {
- uint32
- tmp = ctx->b + c + D;
- ctx->b = ctx->c + d + A;
- ctx->c = ctx->d + a + B;
- ctx->d = ctx->a + b + C;
- ctx->a = tmp;
- }
-}
-
-/* --- @rmd128_init@ --- *
- *
- * Arguments: @rmd128_ctx *ctx@ = pointer to context block to initialize
- *
- * Returns: ---
- *
- * Use: Initializes a context block ready for hashing.
- */
-
-void rmd128_init(rmd128_ctx *ctx)
-{
- ctx->a = 0x67452301;
- ctx->b = 0xefcdab89;
- ctx->c = 0x98badcfe;
- ctx->d = 0x10325476;
- ctx->off = 0;
- ctx->nl = ctx->nh = 0;
-}
-
-/* --- @rmd128_set@ --- *
- *
- * Arguments: @rmd128_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 rmd128_set(rmd128_ctx *ctx, const void *buf, unsigned long count)
-{
- const octet *p = buf;
- ctx->a = LOAD32_L(p + 0);
- ctx->b = LOAD32_L(p + 4);
- ctx->c = LOAD32_L(p + 8);
- ctx->d = LOAD32_L(p + 12);
- ctx->off = 0;
- ctx->nl = U32(count);
- ctx->nh = U32(((count & ~MASK32) >> 16) >> 16);
-}
-
-/* --- @rmd128_hash@ --- *
- *
- * Arguments: @rmd128_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 rmd128_hash(rmd128_ctx *ctx, const void *buf, size_t sz)
-{
- HASH_BUFFER(RMD128, rmd128, ctx, buf, sz);
-}
-
-/* --- @rmd128_done@ --- *
- *
- * Arguments: @rmd128_ctx *ctx@ = pointer to context block
- * @void *hash@ = pointer to output buffer
- *
- * Returns: ---
- *
- * Use: Returns the hash of the data read so far.
- */
-
-void rmd128_done(rmd128_ctx *ctx, void *hash)
-{
- octet *p = hash;
- HASH_MD5STRENGTH(RMD128, rmd128, ctx);
- STORE32_L(p + 0, ctx->a);
- STORE32_L(p + 4, ctx->b);
- STORE32_L(p + 8, ctx->c);
- STORE32_L(p + 12, ctx->d);
-}
-
-/* --- @rmd128_state@ --- *
- *
- * Arguments: @rmd128_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 @rmd128_set@.
- */
-
-unsigned long rmd128_state(rmd128_ctx *ctx, void *state)
-{
- octet *p = state;
- STORE32_L(p + 0, ctx->a);
- STORE32_L(p + 4, ctx->b);
- STORE32_L(p + 8, ctx->c);
- STORE32_L(p + 12, ctx->d);
- return (ctx->nl | ((ctx->nh << 16) << 16));
-}
-
-/* --- Generic interface --- */
-
-GHASH_DEF(RMD128, rmd128)
-
-/* --- Test code --- */
-
-HASH_TEST(RMD128, rmd128)
-
-/*----- That's all, folks -------------------------------------------------*/
projects / u / mdw / catacomb / blobdiff