/* $OpenBSD: rmd160.c,v 1.4 2003/12/14 11:22:35 markus Exp $ */ /* * Copyright (c) 2001 Markus Friedl. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ /* * Preneel, Bosselaers, Dobbertin, "The Cryptographic Hash Function RIPEMD-160", * RSA Laboratories, CryptoBytes, Volume 3, Number 2, Autumn 1997, * ftp://ftp.rsasecurity.com/pub/cryptobytes/crypto3n2.pdf */ #include <sys/param.h> #include <sys/systm.h> #include <sys/endian.h> #include <crypto/rmd160.h> #define PUT_64BIT_LE(cp, value) do { \ (cp)[7] = (value) >> 56; \ (cp)[6] = (value) >> 48; \ (cp)[5] = (value) >> 40; \ (cp)[4] = (value) >> 32; \ (cp)[3] = (value) >> 24; \ (cp)[2] = (value) >> 16; \ (cp)[1] = (value) >> 8; \ (cp)[0] = (value); } while (0) #define PUT_32BIT_LE(cp, value) do { \ (cp)[3] = (value) >> 24; \ (cp)[2] = (value) >> 16; \ (cp)[1] = (value) >> 8; \ (cp)[0] = (value); } while (0) #define H0 0x67452301U #define H1 0xEFCDAB89U #define H2 0x98BADCFEU #define H3 0x10325476U #define H4 0xC3D2E1F0U #define K0 0x00000000U #define K1 0x5A827999U #define K2 0x6ED9EBA1U #define K3 0x8F1BBCDCU #define K4 0xA953FD4EU #define KK0 0x50A28BE6U #define KK1 0x5C4DD124U #define KK2 0x6D703EF3U #define KK3 0x7A6D76E9U #define KK4 0x00000000U /* rotate x left n bits. */ #define ROL(n, x) (((x) << (n)) | ((x) >> (32-(n)))) #define F0(x, y, z) ((x) ^ (y) ^ (z)) #define F1(x, y, z) (((x) & (y)) | ((~x) & (z))) #define F2(x, y, z) (((x) | (~y)) ^ (z)) #define F3(x, y, z) (((x) & (z)) | ((y) & (~z))) #define F4(x, y, z) ((x) ^ ((y) | (~z))) #define R(a, b, c, d, e, Fj, Kj, sj, rj) \ do { \ a = ROL(sj, a + Fj(b,c,d) + X(rj) + Kj) + e; \ c = ROL(10, c); \ } while(0) #define X(i) x[i] static u_char PADDING[64] = { 0x80, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }; void RMD160Init(RMD160_CTX *ctx) { ctx->count = 0; ctx->state[0] = H0; ctx->state[1] = H1; ctx->state[2] = H2; ctx->state[3] = H3; ctx->state[4] = H4; } void RMD160Update(RMD160_CTX *ctx, const u_char *input, u_int32_t len) { u_int32_t have, off, need; have = (ctx->count/8) % 64; need = 64 - have; ctx->count += 8 * len; off = 0; if (len >= need) { if (have) { memcpy(ctx->buffer + have, input, need); RMD160Transform(ctx->state, ctx->buffer); off = need; have = 0; } /* now the buffer is empty */ while (off + 64 <= len) { RMD160Transform(ctx->state, input+off); off += 64; } } if (off < len) memcpy(ctx->buffer + have, input+off, len-off); } void RMD160Final(u_char digest[20], RMD160_CTX *ctx) { int i; u_char size[8]; u_int32_t padlen; PUT_64BIT_LE(size, ctx->count); /* * pad to 64 byte blocks, at least one byte from PADDING plus 8 bytes * for the size */ padlen = 64 - ((ctx->count/8) % 64); if (padlen < 1 + 8) padlen += 64; RMD160Update(ctx, PADDING, padlen - 8); /* padlen - 8 <= 64 */ RMD160Update(ctx, size, 8); if (digest != NULL) for (i = 0; i < 5; i++) PUT_32BIT_LE(digest + i*4, ctx->state[i]); memset(ctx, 0, sizeof (*ctx)); } void RMD160Transform(u_int32_t state[5], const u_char block[64]) { u_int32_t a, b, c, d, e, aa, bb, cc, dd, ee, t, x[16]; #if BYTE_ORDER == LITTLE_ENDIAN memcpy(x, block, 64); #else int i; for (i = 0; i < 16; i++) x[i] = (u_int32_t)( (u_int32_t)(block[i*4 + 0]) | (u_int32_t)(block[i*4 + 1]) << 8 | (u_int32_t)(block[i*4 + 2]) << 16 | (u_int32_t)(block[i*4 + 3]) << 24); #endif a = state[0]; b = state[1]; c = state[2]; d = state[3]; e = state[4]; /* Round 1 */ R(a, b, c, d, e, F0, K0, 11, 0); R(e, a, b, c, d, F0, K0, 14, 1); R(d, e, a, b, c, F0, K0, 15, 2); R(c, d, e, a, b, F0, K0, 12, 3); R(b, c, d, e, a, F0, K0, 5, 4); R(a, b, c, d, e, F0, K0, 8, 5); R(e, a, b, c, d, F0, K0, 7, 6); R(d, e, a, b, c, F0, K0, 9, 7); R(c, d, e, a, b, F0, K0, 11, 8); R(b, c, d, e, a, F0, K0, 13, 9); R(a, b, c, d, e, F0, K0, 14, 10); R(e, a, b, c, d, F0, K0, 15, 11); R(d, e, a, b, c, F0, K0, 6, 12); R(c, d, e, a, b, F0, K0, 7, 13); R(b, c, d, e, a, F0, K0, 9, 14); R(a, b, c, d, e, F0, K0, 8, 15); /* #15 */ /* Round 2 */ R(e, a, b, c, d, F1, K1, 7, 7); R(d, e, a, b, c, F1, K1, 6, 4); R(c, d, e, a, b, F1, K1, 8, 13); R(b, c, d, e, a, F1, K1, 13, 1); R(a, b, c, d, e, F1, K1, 11, 10); R(e, a, b, c, d, F1, K1, 9, 6); R(d, e, a, b, c, F1, K1, 7, 15); R(c, d, e, a, b, F1, K1, 15, 3); R(b, c, d, e, a, F1, K1, 7, 12); R(a, b, c, d, e, F1, K1, 12, 0); R(e, a, b, c, d, F1, K1, 15, 9); R(d, e, a, b, c, F1, K1, 9, 5); R(c, d, e, a, b, F1, K1, 11, 2); R(b, c, d, e, a, F1, K1, 7, 14); R(a, b, c, d, e, F1, K1, 13, 11); R(e, a, b, c, d, F1, K1, 12, 8); /* #31 */ /* Round 3 */ R(d, e, a, b, c, F2, K2, 11, 3); R(c, d, e, a, b, F2, K2, 13, 10); R(b, c, d, e, a, F2, K2, 6, 14); R(a, b, c, d, e, F2, K2, 7, 4); R(e, a, b, c, d, F2, K2, 14, 9); R(d, e, a, b, c, F2, K2, 9, 15); R(c, d, e, a, b, F2, K2, 13, 8); R(b, c, d, e, a, F2, K2, 15, 1); R(a, b, c, d, e, F2, K2, 14, 2); R(e, a, b, c, d, F2, K2, 8, 7); R(d, e, a, b, c, F2, K2, 13, 0); R(c, d, e, a, b, F2, K2, 6, 6); R(b, c, d, e, a, F2, K2, 5, 13); R(a, b, c, d, e, F2, K2, 12, 11); R(e, a, b, c, d, F2, K2, 7, 5); R(d, e, a, b, c, F2, K2, 5, 12); /* #47 */ /* Round 4 */ R(c, d, e, a, b, F3, K3, 11, 1); R(b, c, d, e, a, F3, K3, 12, 9); R(a, b, c, d, e, F3, K3, 14, 11); R(e, a, b, c, d, F3, K3, 15, 10); R(d, e, a, b, c, F3, K3, 14, 0); R(c, d, e, a, b, F3, K3, 15, 8); R(b, c, d, e, a, F3, K3, 9, 12); R(a, b, c, d, e, F3, K3, 8, 4); R(e, a, b, c, d, F3, K3, 9, 13); R(d, e, a, b, c, F3, K3, 14, 3); R(c, d, e, a, b, F3, K3, 5, 7); R(b, c, d, e, a, F3, K3, 6, 15); R(a, b, c, d, e, F3, K3, 8, 14); R(e, a, b, c, d, F3, K3, 6, 5); R(d, e, a, b, c, F3, K3, 5, 6); R(c, d, e, a, b, F3, K3, 12, 2); /* #63 */ /* Round 5 */ R(b, c, d, e, a, F4, K4, 9, 4); R(a, b, c, d, e, F4, K4, 15, 0); R(e, a, b, c, d, F4, K4, 5, 5); R(d, e, a, b, c, F4, K4, 11, 9); R(c, d, e, a, b, F4, K4, 6, 7); R(b, c, d, e, a, F4, K4, 8, 12); R(a, b, c, d, e, F4, K4, 13, 2); R(e, a, b, c, d, F4, K4, 12, 10); R(d, e, a, b, c, F4, K4, 5, 14); R(c, d, e, a, b, F4, K4, 12, 1); R(b, c, d, e, a, F4, K4, 13, 3); R(a, b, c, d, e, F4, K4, 14, 8); R(e, a, b, c, d, F4, K4, 11, 11); R(d, e, a, b, c, F4, K4, 8, 6); R(c, d, e, a, b, F4, K4, 5, 15); R(b, c, d, e, a, F4, K4, 6, 13); /* #79 */ aa = a ; bb = b; cc = c; dd = d; ee = e; a = state[0]; b = state[1]; c = state[2]; d = state[3]; e = state[4]; /* Parallel round 1 */ R(a, b, c, d, e, F4, KK0, 8, 5); R(e, a, b, c, d, F4, KK0, 9, 14); R(d, e, a, b, c, F4, KK0, 9, 7); R(c, d, e, a, b, F4, KK0, 11, 0); R(b, c, d, e, a, F4, KK0, 13, 9); R(a, b, c, d, e, F4, KK0, 15, 2); R(e, a, b, c, d, F4, KK0, 15, 11); R(d, e, a, b, c, F4, KK0, 5, 4); R(c, d, e, a, b, F4, KK0, 7, 13); R(b, c, d, e, a, F4, KK0, 7, 6); R(a, b, c, d, e, F4, KK0, 8, 15); R(e, a, b, c, d, F4, KK0, 11, 8); R(d, e, a, b, c, F4, KK0, 14, 1); R(c, d, e, a, b, F4, KK0, 14, 10); R(b, c, d, e, a, F4, KK0, 12, 3); R(a, b, c, d, e, F4, KK0, 6, 12); /* #15 */ /* Parallel round 2 */ R(e, a, b, c, d, F3, KK1, 9, 6); R(d, e, a, b, c, F3, KK1, 13, 11); R(c, d, e, a, b, F3, KK1, 15, 3); R(b, c, d, e, a, F3, KK1, 7, 7); R(a, b, c, d, e, F3, KK1, 12, 0); R(e, a, b, c, d, F3, KK1, 8, 13); R(d, e, a, b, c, F3, KK1, 9, 5); R(c, d, e, a, b, F3, KK1, 11, 10); R(b, c, d, e, a, F3, KK1, 7, 14); R(a, b, c, d, e, F3, KK1, 7, 15); R(e, a, b, c, d, F3, KK1, 12, 8); R(d, e, a, b, c, F3, KK1, 7, 12); R(c, d, e, a, b, F3, KK1, 6, 4); R(b, c, d, e, a, F3, KK1, 15, 9); R(a, b, c, d, e, F3, KK1, 13, 1); R(e, a, b, c, d, F3, KK1, 11, 2); /* #31 */ /* Parallel round 3 */ R(d, e, a, b, c, F2, KK2, 9, 15); R(c, d, e, a, b, F2, KK2, 7, 5); R(b, c, d, e, a, F2, KK2, 15, 1); R(a, b, c, d, e, F2, KK2, 11, 3); R(e, a, b, c, d, F2, KK2, 8, 7); R(d, e, a, b, c, F2, KK2, 6, 14); R(c, d, e, a, b, F2, KK2, 6, 6); R(b, c, d, e, a, F2, KK2, 14, 9); R(a, b, c, d, e, F2, KK2, 12, 11); R(e, a, b, c, d, F2, KK2, 13, 8); R(d, e, a, b, c, F2, KK2, 5, 12); R(c, d, e, a, b, F2, KK2, 14, 2); R(b, c, d, e, a, F2, KK2, 13, 10); R(a, b, c, d, e, F2, KK2, 13, 0); R(e, a, b, c, d, F2, KK2, 7, 4); R(d, e, a, b, c, F2, KK2, 5, 13); /* #47 */ /* Parallel round 4 */ R(c, d, e, a, b, F1, KK3, 15, 8); R(b, c, d, e, a, F1, KK3, 5, 6); R(a, b, c, d, e, F1, KK3, 8, 4); R(e, a, b, c, d, F1, KK3, 11, 1); R(d, e, a, b, c, F1, KK3, 14, 3); R(c, d, e, a, b, F1, KK3, 14, 11); R(b, c, d, e, a, F1, KK3, 6, 15); R(a, b, c, d, e, F1, KK3, 14, 0); R(e, a, b, c, d, F1, KK3, 6, 5); R(d, e, a, b, c, F1, KK3, 9, 12); R(c, d, e, a, b, F1, KK3, 12, 2); R(b, c, d, e, a, F1, KK3, 9, 13); R(a, b, c, d, e, F1, KK3, 12, 9); R(e, a, b, c, d, F1, KK3, 5, 7); R(d, e, a, b, c, F1, KK3, 15, 10); R(c, d, e, a, b, F1, KK3, 8, 14); /* #63 */ /* Parallel round 5 */ R(b, c, d, e, a, F0, KK4, 8, 12); R(a, b, c, d, e, F0, KK4, 5, 15); R(e, a, b, c, d, F0, KK4, 12, 10); R(d, e, a, b, c, F0, KK4, 9, 4); R(c, d, e, a, b, F0, KK4, 12, 1); R(b, c, d, e, a, F0, KK4, 5, 5); R(a, b, c, d, e, F0, KK4, 14, 8); R(e, a, b, c, d, F0, KK4, 6, 7); R(d, e, a, b, c, F0, KK4, 8, 6); R(c, d, e, a, b, F0, KK4, 13, 2); R(b, c, d, e, a, F0, KK4, 6, 13); R(a, b, c, d, e, F0, KK4, 5, 14); R(e, a, b, c, d, F0, KK4, 15, 0); R(d, e, a, b, c, F0, KK4, 13, 3); R(c, d, e, a, b, F0, KK4, 11, 9); R(b, c, d, e, a, F0, KK4, 11, 11); /* #79 */ t = state[1] + cc + d; state[1] = state[2] + dd + e; state[2] = state[3] + ee + a; state[3] = state[4] + aa + b; state[4] = state[0] + bb + c; state[0] = t; }