1 /* $NetBSD: rmd160.c,v 1.1 2014/03/09 00:15:45 agc Exp $ */
2 /* $KAME: rmd160.c,v 1.2 2003/07/25 09:37:55 itojun Exp $ */
3 /* $OpenBSD: rmd160.c,v 1.3 2001/09/26 21:40:13 markus Exp $ */
4 /*
5 * Copyright (c) 2001 Markus Friedl. All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
21 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
23 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
25 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 */
27 /*
28 * Preneel, Bosselaers, Dobbertin, "The Cryptographic Hash Function RIPEMD-160",
29 * RSA Laboratories, CryptoBytes, Volume 3, Number 2, Autumn 1997,
30 * ftp://ftp.rsasecurity.com/pub/cryptobytes/crypto3n2.pdf
31 */
32
33 #include <sys/cdefs.h>
34
35 #include <string.h>
36
37 #include <sys/types.h>
38 #include <sys/param.h>
39
40 #include "rmd160.h"
41
42 #define PUT_64BIT_LE(cp, value) do { \
43 (cp)[7] = (u_char)((value) >> 56); \
44 (cp)[6] = (u_char)((value) >> 48); \
45 (cp)[5] = (u_char)((value) >> 40); \
46 (cp)[4] = (u_char)((value) >> 32); \
47 (cp)[3] = (u_char)((value) >> 24); \
48 (cp)[2] = (u_char)((value) >> 16); \
49 (cp)[1] = (u_char)((value) >> 8); \
50 (cp)[0] = (u_char)((value)); } while (/*CONSTCOND*/0)
51
52 #define PUT_32BIT_LE(cp, value) do { \
53 (cp)[3] = (value) >> 24; \
54 (cp)[2] = (value) >> 16; \
55 (cp)[1] = (value) >> 8; \
56 (cp)[0] = (value); } while (/*CONSTCOND*/0)
57
58 #define H0 0x67452301U
59 #define H1 0xEFCDAB89U
60 #define H2 0x98BADCFEU
61 #define H3 0x10325476U
62 #define H4 0xC3D2E1F0U
63
64 #define K0 0x00000000U
65 #define K1 0x5A827999U
66 #define K2 0x6ED9EBA1U
67 #define K3 0x8F1BBCDCU
68 #define K4 0xA953FD4EU
69
70 #define KK0 0x50A28BE6U
71 #define KK1 0x5C4DD124U
72 #define KK2 0x6D703EF3U
73 #define KK3 0x7A6D76E9U
74 #define KK4 0x00000000U
75
76 /* rotate x left n bits. */
77 #define ROL(n, x) (((x) << (n)) | ((x) >> (32-(n))))
78
79 #define F0(x, y, z) ((x) ^ (y) ^ (z))
80 #define F1(x, y, z) (((x) & (y)) | ((~x) & (z)))
81 #define F2(x, y, z) (((x) | (~y)) ^ (z))
82 #define F3(x, y, z) (((x) & (z)) | ((y) & (~z)))
83 #define F4(x, y, z) ((x) ^ ((y) | (~z)))
84
85 #define R(a, b, c, d, e, Fj, Kj, sj, rj) \
86 do { \
87 a = ROL(sj, a + Fj(b,c,d) + X(rj) + Kj) + e; \
88 c = ROL(10, c); \
89 } while(/*CONSTCOND*/0)
90
91 #define X(i) x[i]
92
93 static const u_char PADDING[64] = {
94 0x80, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
95 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
96 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
97 };
98
99 void
RMD160Init(RMD160_CTX * ctx)100 RMD160Init(RMD160_CTX *ctx)
101 {
102 ctx->count = 0;
103 ctx->state[0] = H0;
104 ctx->state[1] = H1;
105 ctx->state[2] = H2;
106 ctx->state[3] = H3;
107 ctx->state[4] = H4;
108 }
109
110 void
RMD160Update(RMD160_CTX * ctx,const u_char * input,uint32_t len)111 RMD160Update(RMD160_CTX *ctx, const u_char *input, uint32_t len)
112 {
113 uint32_t have, off, need;
114
115 have = (uint32_t)((ctx->count/8) % 64);
116 need = 64 - have;
117 ctx->count += 8 * len;
118 off = 0;
119
120 if (len >= need) {
121 if (have) {
122 memcpy(ctx->buffer + have, input, (size_t)need);
123 RMD160Transform(ctx->state, ctx->buffer);
124 off = need;
125 have = 0;
126 }
127 /* now the buffer is empty */
128 while (off + 64 <= len) {
129 RMD160Transform(ctx->state, input+off);
130 off += 64;
131 }
132 }
133 if (off < len)
134 memcpy(ctx->buffer + have, input+off, (size_t)len-off);
135 }
136
137 void
RMD160Final(u_char digest[20],RMD160_CTX * ctx)138 RMD160Final(u_char digest[20], RMD160_CTX *ctx)
139 {
140 int i;
141 u_char size[8];
142 uint32_t padlen;
143
144 PUT_64BIT_LE(size, ctx->count);
145
146 /*
147 * pad to 64 byte blocks, at least one byte from PADDING plus 8 bytes
148 * for the size
149 */
150 padlen = (uint32_t)(64 - ((ctx->count/8) % 64));
151 if (padlen < 1 + 8)
152 padlen += 64;
153 RMD160Update(ctx, PADDING, padlen - 8); /* padlen - 8 <= 64 */
154 RMD160Update(ctx, size, 8);
155
156 if (digest != NULL)
157 for (i = 0; i < 5; i++)
158 PUT_32BIT_LE(digest + i*4, ctx->state[i]);
159
160 memset(ctx, 0, sizeof (*ctx));
161 }
162
163 void
RMD160Transform(uint32_t state[5],const u_char block[64])164 RMD160Transform(uint32_t state[5], const u_char block[64])
165 {
166 uint32_t a, b, c, d, e, aa, bb, cc, dd, ee, t, x[16];
167
168 #if BYTE_ORDER == LITTLE_ENDIAN
169 memcpy(x, block, (size_t)64);
170 #else
171 int i;
172
173 for (i = 0; i < 16; i++)
174 x[i] = le32dec(block+i*4);
175 #endif
176
177 a = state[0];
178 b = state[1];
179 c = state[2];
180 d = state[3];
181 e = state[4];
182
183 /* Round 1 */
184 R(a, b, c, d, e, F0, K0, 11, 0);
185 R(e, a, b, c, d, F0, K0, 14, 1);
186 R(d, e, a, b, c, F0, K0, 15, 2);
187 R(c, d, e, a, b, F0, K0, 12, 3);
188 R(b, c, d, e, a, F0, K0, 5, 4);
189 R(a, b, c, d, e, F0, K0, 8, 5);
190 R(e, a, b, c, d, F0, K0, 7, 6);
191 R(d, e, a, b, c, F0, K0, 9, 7);
192 R(c, d, e, a, b, F0, K0, 11, 8);
193 R(b, c, d, e, a, F0, K0, 13, 9);
194 R(a, b, c, d, e, F0, K0, 14, 10);
195 R(e, a, b, c, d, F0, K0, 15, 11);
196 R(d, e, a, b, c, F0, K0, 6, 12);
197 R(c, d, e, a, b, F0, K0, 7, 13);
198 R(b, c, d, e, a, F0, K0, 9, 14);
199 R(a, b, c, d, e, F0, K0, 8, 15); /* #15 */
200 /* Round 2 */
201 R(e, a, b, c, d, F1, K1, 7, 7);
202 R(d, e, a, b, c, F1, K1, 6, 4);
203 R(c, d, e, a, b, F1, K1, 8, 13);
204 R(b, c, d, e, a, F1, K1, 13, 1);
205 R(a, b, c, d, e, F1, K1, 11, 10);
206 R(e, a, b, c, d, F1, K1, 9, 6);
207 R(d, e, a, b, c, F1, K1, 7, 15);
208 R(c, d, e, a, b, F1, K1, 15, 3);
209 R(b, c, d, e, a, F1, K1, 7, 12);
210 R(a, b, c, d, e, F1, K1, 12, 0);
211 R(e, a, b, c, d, F1, K1, 15, 9);
212 R(d, e, a, b, c, F1, K1, 9, 5);
213 R(c, d, e, a, b, F1, K1, 11, 2);
214 R(b, c, d, e, a, F1, K1, 7, 14);
215 R(a, b, c, d, e, F1, K1, 13, 11);
216 R(e, a, b, c, d, F1, K1, 12, 8); /* #31 */
217 /* Round 3 */
218 R(d, e, a, b, c, F2, K2, 11, 3);
219 R(c, d, e, a, b, F2, K2, 13, 10);
220 R(b, c, d, e, a, F2, K2, 6, 14);
221 R(a, b, c, d, e, F2, K2, 7, 4);
222 R(e, a, b, c, d, F2, K2, 14, 9);
223 R(d, e, a, b, c, F2, K2, 9, 15);
224 R(c, d, e, a, b, F2, K2, 13, 8);
225 R(b, c, d, e, a, F2, K2, 15, 1);
226 R(a, b, c, d, e, F2, K2, 14, 2);
227 R(e, a, b, c, d, F2, K2, 8, 7);
228 R(d, e, a, b, c, F2, K2, 13, 0);
229 R(c, d, e, a, b, F2, K2, 6, 6);
230 R(b, c, d, e, a, F2, K2, 5, 13);
231 R(a, b, c, d, e, F2, K2, 12, 11);
232 R(e, a, b, c, d, F2, K2, 7, 5);
233 R(d, e, a, b, c, F2, K2, 5, 12); /* #47 */
234 /* Round 4 */
235 R(c, d, e, a, b, F3, K3, 11, 1);
236 R(b, c, d, e, a, F3, K3, 12, 9);
237 R(a, b, c, d, e, F3, K3, 14, 11);
238 R(e, a, b, c, d, F3, K3, 15, 10);
239 R(d, e, a, b, c, F3, K3, 14, 0);
240 R(c, d, e, a, b, F3, K3, 15, 8);
241 R(b, c, d, e, a, F3, K3, 9, 12);
242 R(a, b, c, d, e, F3, K3, 8, 4);
243 R(e, a, b, c, d, F3, K3, 9, 13);
244 R(d, e, a, b, c, F3, K3, 14, 3);
245 R(c, d, e, a, b, F3, K3, 5, 7);
246 R(b, c, d, e, a, F3, K3, 6, 15);
247 R(a, b, c, d, e, F3, K3, 8, 14);
248 R(e, a, b, c, d, F3, K3, 6, 5);
249 R(d, e, a, b, c, F3, K3, 5, 6);
250 R(c, d, e, a, b, F3, K3, 12, 2); /* #63 */
251 /* Round 5 */
252 R(b, c, d, e, a, F4, K4, 9, 4);
253 R(a, b, c, d, e, F4, K4, 15, 0);
254 R(e, a, b, c, d, F4, K4, 5, 5);
255 R(d, e, a, b, c, F4, K4, 11, 9);
256 R(c, d, e, a, b, F4, K4, 6, 7);
257 R(b, c, d, e, a, F4, K4, 8, 12);
258 R(a, b, c, d, e, F4, K4, 13, 2);
259 R(e, a, b, c, d, F4, K4, 12, 10);
260 R(d, e, a, b, c, F4, K4, 5, 14);
261 R(c, d, e, a, b, F4, K4, 12, 1);
262 R(b, c, d, e, a, F4, K4, 13, 3);
263 R(a, b, c, d, e, F4, K4, 14, 8);
264 R(e, a, b, c, d, F4, K4, 11, 11);
265 R(d, e, a, b, c, F4, K4, 8, 6);
266 R(c, d, e, a, b, F4, K4, 5, 15);
267 R(b, c, d, e, a, F4, K4, 6, 13); /* #79 */
268
269 aa = a ; bb = b; cc = c; dd = d; ee = e;
270
271 a = state[0];
272 b = state[1];
273 c = state[2];
274 d = state[3];
275 e = state[4];
276
277 /* Parallel round 1 */
278 R(a, b, c, d, e, F4, KK0, 8, 5);
279 R(e, a, b, c, d, F4, KK0, 9, 14);
280 R(d, e, a, b, c, F4, KK0, 9, 7);
281 R(c, d, e, a, b, F4, KK0, 11, 0);
282 R(b, c, d, e, a, F4, KK0, 13, 9);
283 R(a, b, c, d, e, F4, KK0, 15, 2);
284 R(e, a, b, c, d, F4, KK0, 15, 11);
285 R(d, e, a, b, c, F4, KK0, 5, 4);
286 R(c, d, e, a, b, F4, KK0, 7, 13);
287 R(b, c, d, e, a, F4, KK0, 7, 6);
288 R(a, b, c, d, e, F4, KK0, 8, 15);
289 R(e, a, b, c, d, F4, KK0, 11, 8);
290 R(d, e, a, b, c, F4, KK0, 14, 1);
291 R(c, d, e, a, b, F4, KK0, 14, 10);
292 R(b, c, d, e, a, F4, KK0, 12, 3);
293 R(a, b, c, d, e, F4, KK0, 6, 12); /* #15 */
294 /* Parallel round 2 */
295 R(e, a, b, c, d, F3, KK1, 9, 6);
296 R(d, e, a, b, c, F3, KK1, 13, 11);
297 R(c, d, e, a, b, F3, KK1, 15, 3);
298 R(b, c, d, e, a, F3, KK1, 7, 7);
299 R(a, b, c, d, e, F3, KK1, 12, 0);
300 R(e, a, b, c, d, F3, KK1, 8, 13);
301 R(d, e, a, b, c, F3, KK1, 9, 5);
302 R(c, d, e, a, b, F3, KK1, 11, 10);
303 R(b, c, d, e, a, F3, KK1, 7, 14);
304 R(a, b, c, d, e, F3, KK1, 7, 15);
305 R(e, a, b, c, d, F3, KK1, 12, 8);
306 R(d, e, a, b, c, F3, KK1, 7, 12);
307 R(c, d, e, a, b, F3, KK1, 6, 4);
308 R(b, c, d, e, a, F3, KK1, 15, 9);
309 R(a, b, c, d, e, F3, KK1, 13, 1);
310 R(e, a, b, c, d, F3, KK1, 11, 2); /* #31 */
311 /* Parallel round 3 */
312 R(d, e, a, b, c, F2, KK2, 9, 15);
313 R(c, d, e, a, b, F2, KK2, 7, 5);
314 R(b, c, d, e, a, F2, KK2, 15, 1);
315 R(a, b, c, d, e, F2, KK2, 11, 3);
316 R(e, a, b, c, d, F2, KK2, 8, 7);
317 R(d, e, a, b, c, F2, KK2, 6, 14);
318 R(c, d, e, a, b, F2, KK2, 6, 6);
319 R(b, c, d, e, a, F2, KK2, 14, 9);
320 R(a, b, c, d, e, F2, KK2, 12, 11);
321 R(e, a, b, c, d, F2, KK2, 13, 8);
322 R(d, e, a, b, c, F2, KK2, 5, 12);
323 R(c, d, e, a, b, F2, KK2, 14, 2);
324 R(b, c, d, e, a, F2, KK2, 13, 10);
325 R(a, b, c, d, e, F2, KK2, 13, 0);
326 R(e, a, b, c, d, F2, KK2, 7, 4);
327 R(d, e, a, b, c, F2, KK2, 5, 13); /* #47 */
328 /* Parallel round 4 */
329 R(c, d, e, a, b, F1, KK3, 15, 8);
330 R(b, c, d, e, a, F1, KK3, 5, 6);
331 R(a, b, c, d, e, F1, KK3, 8, 4);
332 R(e, a, b, c, d, F1, KK3, 11, 1);
333 R(d, e, a, b, c, F1, KK3, 14, 3);
334 R(c, d, e, a, b, F1, KK3, 14, 11);
335 R(b, c, d, e, a, F1, KK3, 6, 15);
336 R(a, b, c, d, e, F1, KK3, 14, 0);
337 R(e, a, b, c, d, F1, KK3, 6, 5);
338 R(d, e, a, b, c, F1, KK3, 9, 12);
339 R(c, d, e, a, b, F1, KK3, 12, 2);
340 R(b, c, d, e, a, F1, KK3, 9, 13);
341 R(a, b, c, d, e, F1, KK3, 12, 9);
342 R(e, a, b, c, d, F1, KK3, 5, 7);
343 R(d, e, a, b, c, F1, KK3, 15, 10);
344 R(c, d, e, a, b, F1, KK3, 8, 14); /* #63 */
345 /* Parallel round 5 */
346 R(b, c, d, e, a, F0, KK4, 8, 12);
347 R(a, b, c, d, e, F0, KK4, 5, 15);
348 R(e, a, b, c, d, F0, KK4, 12, 10);
349 R(d, e, a, b, c, F0, KK4, 9, 4);
350 R(c, d, e, a, b, F0, KK4, 12, 1);
351 R(b, c, d, e, a, F0, KK4, 5, 5);
352 R(a, b, c, d, e, F0, KK4, 14, 8);
353 R(e, a, b, c, d, F0, KK4, 6, 7);
354 R(d, e, a, b, c, F0, KK4, 8, 6);
355 R(c, d, e, a, b, F0, KK4, 13, 2);
356 R(b, c, d, e, a, F0, KK4, 6, 13);
357 R(a, b, c, d, e, F0, KK4, 5, 14);
358 R(e, a, b, c, d, F0, KK4, 15, 0);
359 R(d, e, a, b, c, F0, KK4, 13, 3);
360 R(c, d, e, a, b, F0, KK4, 11, 9);
361 R(b, c, d, e, a, F0, KK4, 11, 11); /* #79 */
362
363 t = state[1] + cc + d;
364 state[1] = state[2] + dd + e;
365 state[2] = state[3] + ee + a;
366 state[3] = state[4] + aa + b;
367 state[4] = state[0] + bb + c;
368 state[0] = t;
369 }
370