FreeBSD/Linux Kernel Cross Reference
sys/crypto/rmd160.c
1 /* $OpenBSD: rmd160.c,v 1.5 2011/01/11 15:42:05 deraadt Exp $ */
2 /*
3 * Copyright (c) 2001 Markus Friedl. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
15 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
16 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
17 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
18 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
19 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
20 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
21 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
23 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 */
25 /*
26 * Preneel, Bosselaers, Dobbertin, "The Cryptographic Hash Function RIPEMD-160",
27 * RSA Laboratories, CryptoBytes, Volume 3, Number 2, Autumn 1997,
28 * ftp://ftp.rsasecurity.com/pub/cryptobytes/crypto3n2.pdf
29 */
30 #include <sys/param.h>
31 #include <sys/systm.h>
32 #include <sys/endian.h>
33 #include <crypto/rmd160.h>
34
35 #define PUT_64BIT_LE(cp, value) do { \
36 (cp)[7] = (value) >> 56; \
37 (cp)[6] = (value) >> 48; \
38 (cp)[5] = (value) >> 40; \
39 (cp)[4] = (value) >> 32; \
40 (cp)[3] = (value) >> 24; \
41 (cp)[2] = (value) >> 16; \
42 (cp)[1] = (value) >> 8; \
43 (cp)[0] = (value); } while (0)
44
45 #define PUT_32BIT_LE(cp, value) do { \
46 (cp)[3] = (value) >> 24; \
47 (cp)[2] = (value) >> 16; \
48 (cp)[1] = (value) >> 8; \
49 (cp)[0] = (value); } while (0)
50
51 #define H0 0x67452301U
52 #define H1 0xEFCDAB89U
53 #define H2 0x98BADCFEU
54 #define H3 0x10325476U
55 #define H4 0xC3D2E1F0U
56
57 #define K0 0x00000000U
58 #define K1 0x5A827999U
59 #define K2 0x6ED9EBA1U
60 #define K3 0x8F1BBCDCU
61 #define K4 0xA953FD4EU
62
63 #define KK0 0x50A28BE6U
64 #define KK1 0x5C4DD124U
65 #define KK2 0x6D703EF3U
66 #define KK3 0x7A6D76E9U
67 #define KK4 0x00000000U
68
69 /* rotate x left n bits. */
70 #define ROL(n, x) (((x) << (n)) | ((x) >> (32-(n))))
71
72 #define F0(x, y, z) ((x) ^ (y) ^ (z))
73 #define F1(x, y, z) (((x) & (y)) | ((~x) & (z)))
74 #define F2(x, y, z) (((x) | (~y)) ^ (z))
75 #define F3(x, y, z) (((x) & (z)) | ((y) & (~z)))
76 #define F4(x, y, z) ((x) ^ ((y) | (~z)))
77
78 #define R(a, b, c, d, e, Fj, Kj, sj, rj) \
79 do { \
80 a = ROL(sj, a + Fj(b,c,d) + X(rj) + Kj) + e; \
81 c = ROL(10, c); \
82 } while(0)
83
84 #define X(i) x[i]
85
86 static u_char PADDING[64] = {
87 0x80, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
88 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
89 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
90 };
91
92 void
93 RMD160Init(RMD160_CTX *ctx)
94 {
95 ctx->count = 0;
96 ctx->state[0] = H0;
97 ctx->state[1] = H1;
98 ctx->state[2] = H2;
99 ctx->state[3] = H3;
100 ctx->state[4] = H4;
101 }
102
103 void
104 RMD160Update(RMD160_CTX *ctx, const u_char *input, u_int32_t len)
105 {
106 u_int32_t have, off, need;
107
108 have = (ctx->count/8) % 64;
109 need = 64 - have;
110 ctx->count += 8 * len;
111 off = 0;
112
113 if (len >= need) {
114 if (have) {
115 memcpy(ctx->buffer + have, input, need);
116 RMD160Transform(ctx->state, ctx->buffer);
117 off = need;
118 have = 0;
119 }
120 /* now the buffer is empty */
121 while (off + 64 <= len) {
122 RMD160Transform(ctx->state, input+off);
123 off += 64;
124 }
125 }
126 if (off < len)
127 memcpy(ctx->buffer + have, input+off, len-off);
128 }
129
130 void
131 RMD160Final(u_char digest[20], RMD160_CTX *ctx)
132 {
133 int i;
134 u_char size[8];
135 u_int32_t padlen;
136
137 PUT_64BIT_LE(size, ctx->count);
138
139 /*
140 * pad to 64 byte blocks, at least one byte from PADDING plus 8 bytes
141 * for the size
142 */
143 padlen = 64 - ((ctx->count/8) % 64);
144 if (padlen < 1 + 8)
145 padlen += 64;
146 RMD160Update(ctx, PADDING, padlen - 8); /* padlen - 8 <= 64 */
147 RMD160Update(ctx, size, 8);
148
149 if (digest != NULL)
150 for (i = 0; i < 5; i++)
151 PUT_32BIT_LE(digest + i*4, ctx->state[i]);
152
153 explicit_bzero(ctx, sizeof (*ctx));
154 }
155
156 void
157 RMD160Transform(u_int32_t state[5], const u_char block[64])
158 {
159 u_int32_t a, b, c, d, e, aa, bb, cc, dd, ee, t, x[16];
160
161 #if BYTE_ORDER == LITTLE_ENDIAN
162 memcpy(x, block, 64);
163 #else
164 int i;
165
166 for (i = 0; i < 16; i++)
167 x[i] = (u_int32_t)(
168 (u_int32_t)(block[i*4 + 0]) |
169 (u_int32_t)(block[i*4 + 1]) << 8 |
170 (u_int32_t)(block[i*4 + 2]) << 16 |
171 (u_int32_t)(block[i*4 + 3]) << 24);
172 #endif
173
174 a = state[0];
175 b = state[1];
176 c = state[2];
177 d = state[3];
178 e = state[4];
179
180 /* Round 1 */
181 R(a, b, c, d, e, F0, K0, 11, 0);
182 R(e, a, b, c, d, F0, K0, 14, 1);
183 R(d, e, a, b, c, F0, K0, 15, 2);
184 R(c, d, e, a, b, F0, K0, 12, 3);
185 R(b, c, d, e, a, F0, K0, 5, 4);
186 R(a, b, c, d, e, F0, K0, 8, 5);
187 R(e, a, b, c, d, F0, K0, 7, 6);
188 R(d, e, a, b, c, F0, K0, 9, 7);
189 R(c, d, e, a, b, F0, K0, 11, 8);
190 R(b, c, d, e, a, F0, K0, 13, 9);
191 R(a, b, c, d, e, F0, K0, 14, 10);
192 R(e, a, b, c, d, F0, K0, 15, 11);
193 R(d, e, a, b, c, F0, K0, 6, 12);
194 R(c, d, e, a, b, F0, K0, 7, 13);
195 R(b, c, d, e, a, F0, K0, 9, 14);
196 R(a, b, c, d, e, F0, K0, 8, 15); /* #15 */
197 /* Round 2 */
198 R(e, a, b, c, d, F1, K1, 7, 7);
199 R(d, e, a, b, c, F1, K1, 6, 4);
200 R(c, d, e, a, b, F1, K1, 8, 13);
201 R(b, c, d, e, a, F1, K1, 13, 1);
202 R(a, b, c, d, e, F1, K1, 11, 10);
203 R(e, a, b, c, d, F1, K1, 9, 6);
204 R(d, e, a, b, c, F1, K1, 7, 15);
205 R(c, d, e, a, b, F1, K1, 15, 3);
206 R(b, c, d, e, a, F1, K1, 7, 12);
207 R(a, b, c, d, e, F1, K1, 12, 0);
208 R(e, a, b, c, d, F1, K1, 15, 9);
209 R(d, e, a, b, c, F1, K1, 9, 5);
210 R(c, d, e, a, b, F1, K1, 11, 2);
211 R(b, c, d, e, a, F1, K1, 7, 14);
212 R(a, b, c, d, e, F1, K1, 13, 11);
213 R(e, a, b, c, d, F1, K1, 12, 8); /* #31 */
214 /* Round 3 */
215 R(d, e, a, b, c, F2, K2, 11, 3);
216 R(c, d, e, a, b, F2, K2, 13, 10);
217 R(b, c, d, e, a, F2, K2, 6, 14);
218 R(a, b, c, d, e, F2, K2, 7, 4);
219 R(e, a, b, c, d, F2, K2, 14, 9);
220 R(d, e, a, b, c, F2, K2, 9, 15);
221 R(c, d, e, a, b, F2, K2, 13, 8);
222 R(b, c, d, e, a, F2, K2, 15, 1);
223 R(a, b, c, d, e, F2, K2, 14, 2);
224 R(e, a, b, c, d, F2, K2, 8, 7);
225 R(d, e, a, b, c, F2, K2, 13, 0);
226 R(c, d, e, a, b, F2, K2, 6, 6);
227 R(b, c, d, e, a, F2, K2, 5, 13);
228 R(a, b, c, d, e, F2, K2, 12, 11);
229 R(e, a, b, c, d, F2, K2, 7, 5);
230 R(d, e, a, b, c, F2, K2, 5, 12); /* #47 */
231 /* Round 4 */
232 R(c, d, e, a, b, F3, K3, 11, 1);
233 R(b, c, d, e, a, F3, K3, 12, 9);
234 R(a, b, c, d, e, F3, K3, 14, 11);
235 R(e, a, b, c, d, F3, K3, 15, 10);
236 R(d, e, a, b, c, F3, K3, 14, 0);
237 R(c, d, e, a, b, F3, K3, 15, 8);
238 R(b, c, d, e, a, F3, K3, 9, 12);
239 R(a, b, c, d, e, F3, K3, 8, 4);
240 R(e, a, b, c, d, F3, K3, 9, 13);
241 R(d, e, a, b, c, F3, K3, 14, 3);
242 R(c, d, e, a, b, F3, K3, 5, 7);
243 R(b, c, d, e, a, F3, K3, 6, 15);
244 R(a, b, c, d, e, F3, K3, 8, 14);
245 R(e, a, b, c, d, F3, K3, 6, 5);
246 R(d, e, a, b, c, F3, K3, 5, 6);
247 R(c, d, e, a, b, F3, K3, 12, 2); /* #63 */
248 /* Round 5 */
249 R(b, c, d, e, a, F4, K4, 9, 4);
250 R(a, b, c, d, e, F4, K4, 15, 0);
251 R(e, a, b, c, d, F4, K4, 5, 5);
252 R(d, e, a, b, c, F4, K4, 11, 9);
253 R(c, d, e, a, b, F4, K4, 6, 7);
254 R(b, c, d, e, a, F4, K4, 8, 12);
255 R(a, b, c, d, e, F4, K4, 13, 2);
256 R(e, a, b, c, d, F4, K4, 12, 10);
257 R(d, e, a, b, c, F4, K4, 5, 14);
258 R(c, d, e, a, b, F4, K4, 12, 1);
259 R(b, c, d, e, a, F4, K4, 13, 3);
260 R(a, b, c, d, e, F4, K4, 14, 8);
261 R(e, a, b, c, d, F4, K4, 11, 11);
262 R(d, e, a, b, c, F4, K4, 8, 6);
263 R(c, d, e, a, b, F4, K4, 5, 15);
264 R(b, c, d, e, a, F4, K4, 6, 13); /* #79 */
265
266 aa = a ; bb = b; cc = c; dd = d; ee = e;
267
268 a = state[0];
269 b = state[1];
270 c = state[2];
271 d = state[3];
272 e = state[4];
273
274 /* Parallel round 1 */
275 R(a, b, c, d, e, F4, KK0, 8, 5);
276 R(e, a, b, c, d, F4, KK0, 9, 14);
277 R(d, e, a, b, c, F4, KK0, 9, 7);
278 R(c, d, e, a, b, F4, KK0, 11, 0);
279 R(b, c, d, e, a, F4, KK0, 13, 9);
280 R(a, b, c, d, e, F4, KK0, 15, 2);
281 R(e, a, b, c, d, F4, KK0, 15, 11);
282 R(d, e, a, b, c, F4, KK0, 5, 4);
283 R(c, d, e, a, b, F4, KK0, 7, 13);
284 R(b, c, d, e, a, F4, KK0, 7, 6);
285 R(a, b, c, d, e, F4, KK0, 8, 15);
286 R(e, a, b, c, d, F4, KK0, 11, 8);
287 R(d, e, a, b, c, F4, KK0, 14, 1);
288 R(c, d, e, a, b, F4, KK0, 14, 10);
289 R(b, c, d, e, a, F4, KK0, 12, 3);
290 R(a, b, c, d, e, F4, KK0, 6, 12); /* #15 */
291 /* Parallel round 2 */
292 R(e, a, b, c, d, F3, KK1, 9, 6);
293 R(d, e, a, b, c, F3, KK1, 13, 11);
294 R(c, d, e, a, b, F3, KK1, 15, 3);
295 R(b, c, d, e, a, F3, KK1, 7, 7);
296 R(a, b, c, d, e, F3, KK1, 12, 0);
297 R(e, a, b, c, d, F3, KK1, 8, 13);
298 R(d, e, a, b, c, F3, KK1, 9, 5);
299 R(c, d, e, a, b, F3, KK1, 11, 10);
300 R(b, c, d, e, a, F3, KK1, 7, 14);
301 R(a, b, c, d, e, F3, KK1, 7, 15);
302 R(e, a, b, c, d, F3, KK1, 12, 8);
303 R(d, e, a, b, c, F3, KK1, 7, 12);
304 R(c, d, e, a, b, F3, KK1, 6, 4);
305 R(b, c, d, e, a, F3, KK1, 15, 9);
306 R(a, b, c, d, e, F3, KK1, 13, 1);
307 R(e, a, b, c, d, F3, KK1, 11, 2); /* #31 */
308 /* Parallel round 3 */
309 R(d, e, a, b, c, F2, KK2, 9, 15);
310 R(c, d, e, a, b, F2, KK2, 7, 5);
311 R(b, c, d, e, a, F2, KK2, 15, 1);
312 R(a, b, c, d, e, F2, KK2, 11, 3);
313 R(e, a, b, c, d, F2, KK2, 8, 7);
314 R(d, e, a, b, c, F2, KK2, 6, 14);
315 R(c, d, e, a, b, F2, KK2, 6, 6);
316 R(b, c, d, e, a, F2, KK2, 14, 9);
317 R(a, b, c, d, e, F2, KK2, 12, 11);
318 R(e, a, b, c, d, F2, KK2, 13, 8);
319 R(d, e, a, b, c, F2, KK2, 5, 12);
320 R(c, d, e, a, b, F2, KK2, 14, 2);
321 R(b, c, d, e, a, F2, KK2, 13, 10);
322 R(a, b, c, d, e, F2, KK2, 13, 0);
323 R(e, a, b, c, d, F2, KK2, 7, 4);
324 R(d, e, a, b, c, F2, KK2, 5, 13); /* #47 */
325 /* Parallel round 4 */
326 R(c, d, e, a, b, F1, KK3, 15, 8);
327 R(b, c, d, e, a, F1, KK3, 5, 6);
328 R(a, b, c, d, e, F1, KK3, 8, 4);
329 R(e, a, b, c, d, F1, KK3, 11, 1);
330 R(d, e, a, b, c, F1, KK3, 14, 3);
331 R(c, d, e, a, b, F1, KK3, 14, 11);
332 R(b, c, d, e, a, F1, KK3, 6, 15);
333 R(a, b, c, d, e, F1, KK3, 14, 0);
334 R(e, a, b, c, d, F1, KK3, 6, 5);
335 R(d, e, a, b, c, F1, KK3, 9, 12);
336 R(c, d, e, a, b, F1, KK3, 12, 2);
337 R(b, c, d, e, a, F1, KK3, 9, 13);
338 R(a, b, c, d, e, F1, KK3, 12, 9);
339 R(e, a, b, c, d, F1, KK3, 5, 7);
340 R(d, e, a, b, c, F1, KK3, 15, 10);
341 R(c, d, e, a, b, F1, KK3, 8, 14); /* #63 */
342 /* Parallel round 5 */
343 R(b, c, d, e, a, F0, KK4, 8, 12);
344 R(a, b, c, d, e, F0, KK4, 5, 15);
345 R(e, a, b, c, d, F0, KK4, 12, 10);
346 R(d, e, a, b, c, F0, KK4, 9, 4);
347 R(c, d, e, a, b, F0, KK4, 12, 1);
348 R(b, c, d, e, a, F0, KK4, 5, 5);
349 R(a, b, c, d, e, F0, KK4, 14, 8);
350 R(e, a, b, c, d, F0, KK4, 6, 7);
351 R(d, e, a, b, c, F0, KK4, 8, 6);
352 R(c, d, e, a, b, F0, KK4, 13, 2);
353 R(b, c, d, e, a, F0, KK4, 6, 13);
354 R(a, b, c, d, e, F0, KK4, 5, 14);
355 R(e, a, b, c, d, F0, KK4, 15, 0);
356 R(d, e, a, b, c, F0, KK4, 13, 3);
357 R(c, d, e, a, b, F0, KK4, 11, 9);
358 R(b, c, d, e, a, F0, KK4, 11, 11); /* #79 */
359
360 t = state[1] + cc + d;
361 state[1] = state[2] + dd + e;
362 state[2] = state[3] + ee + a;
363 state[3] = state[4] + aa + b;
364 state[4] = state[0] + bb + c;
365 state[0] = t;
366 }
Cache object: 79bfc9453989ea006473c0b9867c37a0
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