1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
|
/* $OpenBSD: ip_rmd160.c,v 1.3 1998/03/23 15:17:47 janjaap Exp $ */
/********************************************************************\
*
* FILE: rmd160.c
*
* CONTENTS: A sample C-implementation of the RIPEMD-160
* hash-function.
* TARGET: any computer with an ANSI C compiler
*
* AUTHOR: Antoon Bosselaers, ESAT-COSIC
* (Arranged for libc by Todd C. Miller)
* DATE: 1 March 1996
* VERSION: 1.0
*
* Copyright (c) Katholieke Universiteit Leuven
* 1996, All Rights Reserved
*
\********************************************************************/
/* header files */
#include <sys/param.h>
#include <sys/systm.h>
#include <netinet/ip_rmd160.h>
/********************************************************************/
/* macro definitions */
/* collect four bytes into one word: */
#define BYTES_TO_DWORD(strptr) \
(((u_int32_t) *((strptr)+3) << 24) | \
((u_int32_t) *((strptr)+2) << 16) | \
((u_int32_t) *((strptr)+1) << 8) | \
((u_int32_t) *(strptr)))
/* ROL(x, n) cyclically rotates x over n bits to the left */
/* x must be of an unsigned 32 bits type and 0 <= n < 32. */
#define ROL(x, n) (((x) << (n)) | ((x) >> (32-(n))))
/* the three basic functions F(), G() and H() */
#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 J(x, y, z) ((x) ^ ((y) | ~(z)))
/* the eight basic operations FF() through III() */
#define FF(a, b, c, d, e, x, s) { \
(a) += F((b), (c), (d)) + (x); \
(a) = ROL((a), (s)) + (e); \
(c) = ROL((c), 10); \
}
#define GG(a, b, c, d, e, x, s) { \
(a) += G((b), (c), (d)) + (x) + 0x5a827999U; \
(a) = ROL((a), (s)) + (e); \
(c) = ROL((c), 10); \
}
#define HH(a, b, c, d, e, x, s) { \
(a) += H((b), (c), (d)) + (x) + 0x6ed9eba1U; \
(a) = ROL((a), (s)) + (e); \
(c) = ROL((c), 10); \
}
#define II(a, b, c, d, e, x, s) { \
(a) += I((b), (c), (d)) + (x) + 0x8f1bbcdcU; \
(a) = ROL((a), (s)) + (e); \
(c) = ROL((c), 10); \
}
#define JJ(a, b, c, d, e, x, s) { \
(a) += J((b), (c), (d)) + (x) + 0xa953fd4eU; \
(a) = ROL((a), (s)) + (e); \
(c) = ROL((c), 10); \
}
#define FFF(a, b, c, d, e, x, s) { \
(a) += F((b), (c), (d)) + (x); \
(a) = ROL((a), (s)) + (e); \
(c) = ROL((c), 10); \
}
#define GGG(a, b, c, d, e, x, s) { \
(a) += G((b), (c), (d)) + (x) + 0x7a6d76e9U; \
(a) = ROL((a), (s)) + (e); \
(c) = ROL((c), 10); \
}
#define HHH(a, b, c, d, e, x, s) { \
(a) += H((b), (c), (d)) + (x) + 0x6d703ef3U; \
(a) = ROL((a), (s)) + (e); \
(c) = ROL((c), 10); \
}
#define III(a, b, c, d, e, x, s) { \
(a) += I((b), (c), (d)) + (x) + 0x5c4dd124U; \
(a) = ROL((a), (s)) + (e); \
(c) = ROL((c), 10); \
}
#define JJJ(a, b, c, d, e, x, s) { \
(a) += J((b), (c), (d)) + (x) + 0x50a28be6U; \
(a) = ROL((a), (s)) + (e); \
(c) = ROL((c), 10); \
}
/********************************************************************/
void RMD160Init(context)
RMD160_CTX *context;
{
/* ripemd-160 initialization constants */
context->state[0] = 0x67452301U;
context->state[1] = 0xefcdab89U;
context->state[2] = 0x98badcfeU;
context->state[3] = 0x10325476U;
context->state[4] = 0xc3d2e1f0U;
context->length[0] = context->length[1] = 0;
context->buflen = 0;
}
/********************************************************************/
void RMD160Transform(state, block)
u_int32_t state[5];
const u_int32_t block[16];
{
u_int32_t aa = state[0], bb = state[1], cc = state[2],
dd = state[3], ee = state[4];
u_int32_t aaa = state[0], bbb = state[1], ccc = state[2],
ddd = state[3], eee = state[4];
/* round 1 */
FF(aa, bb, cc, dd, ee, block[ 0], 11);
FF(ee, aa, bb, cc, dd, block[ 1], 14);
FF(dd, ee, aa, bb, cc, block[ 2], 15);
FF(cc, dd, ee, aa, bb, block[ 3], 12);
FF(bb, cc, dd, ee, aa, block[ 4], 5);
FF(aa, bb, cc, dd, ee, block[ 5], 8);
FF(ee, aa, bb, cc, dd, block[ 6], 7);
FF(dd, ee, aa, bb, cc, block[ 7], 9);
FF(cc, dd, ee, aa, bb, block[ 8], 11);
FF(bb, cc, dd, ee, aa, block[ 9], 13);
FF(aa, bb, cc, dd, ee, block[10], 14);
FF(ee, aa, bb, cc, dd, block[11], 15);
FF(dd, ee, aa, bb, cc, block[12], 6);
FF(cc, dd, ee, aa, bb, block[13], 7);
FF(bb, cc, dd, ee, aa, block[14], 9);
FF(aa, bb, cc, dd, ee, block[15], 8);
/* round 2 */
GG(ee, aa, bb, cc, dd, block[ 7], 7);
GG(dd, ee, aa, bb, cc, block[ 4], 6);
GG(cc, dd, ee, aa, bb, block[13], 8);
GG(bb, cc, dd, ee, aa, block[ 1], 13);
GG(aa, bb, cc, dd, ee, block[10], 11);
GG(ee, aa, bb, cc, dd, block[ 6], 9);
GG(dd, ee, aa, bb, cc, block[15], 7);
GG(cc, dd, ee, aa, bb, block[ 3], 15);
GG(bb, cc, dd, ee, aa, block[12], 7);
GG(aa, bb, cc, dd, ee, block[ 0], 12);
GG(ee, aa, bb, cc, dd, block[ 9], 15);
GG(dd, ee, aa, bb, cc, block[ 5], 9);
GG(cc, dd, ee, aa, bb, block[ 2], 11);
GG(bb, cc, dd, ee, aa, block[14], 7);
GG(aa, bb, cc, dd, ee, block[11], 13);
GG(ee, aa, bb, cc, dd, block[ 8], 12);
/* round 3 */
HH(dd, ee, aa, bb, cc, block[ 3], 11);
HH(cc, dd, ee, aa, bb, block[10], 13);
HH(bb, cc, dd, ee, aa, block[14], 6);
HH(aa, bb, cc, dd, ee, block[ 4], 7);
HH(ee, aa, bb, cc, dd, block[ 9], 14);
HH(dd, ee, aa, bb, cc, block[15], 9);
HH(cc, dd, ee, aa, bb, block[ 8], 13);
HH(bb, cc, dd, ee, aa, block[ 1], 15);
HH(aa, bb, cc, dd, ee, block[ 2], 14);
HH(ee, aa, bb, cc, dd, block[ 7], 8);
HH(dd, ee, aa, bb, cc, block[ 0], 13);
HH(cc, dd, ee, aa, bb, block[ 6], 6);
HH(bb, cc, dd, ee, aa, block[13], 5);
HH(aa, bb, cc, dd, ee, block[11], 12);
HH(ee, aa, bb, cc, dd, block[ 5], 7);
HH(dd, ee, aa, bb, cc, block[12], 5);
/* round 4 */
II(cc, dd, ee, aa, bb, block[ 1], 11);
II(bb, cc, dd, ee, aa, block[ 9], 12);
II(aa, bb, cc, dd, ee, block[11], 14);
II(ee, aa, bb, cc, dd, block[10], 15);
II(dd, ee, aa, bb, cc, block[ 0], 14);
II(cc, dd, ee, aa, bb, block[ 8], 15);
II(bb, cc, dd, ee, aa, block[12], 9);
II(aa, bb, cc, dd, ee, block[ 4], 8);
II(ee, aa, bb, cc, dd, block[13], 9);
II(dd, ee, aa, bb, cc, block[ 3], 14);
II(cc, dd, ee, aa, bb, block[ 7], 5);
II(bb, cc, dd, ee, aa, block[15], 6);
II(aa, bb, cc, dd, ee, block[14], 8);
II(ee, aa, bb, cc, dd, block[ 5], 6);
II(dd, ee, aa, bb, cc, block[ 6], 5);
II(cc, dd, ee, aa, bb, block[ 2], 12);
/* round 5 */
JJ(bb, cc, dd, ee, aa, block[ 4], 9);
JJ(aa, bb, cc, dd, ee, block[ 0], 15);
JJ(ee, aa, bb, cc, dd, block[ 5], 5);
JJ(dd, ee, aa, bb, cc, block[ 9], 11);
JJ(cc, dd, ee, aa, bb, block[ 7], 6);
JJ(bb, cc, dd, ee, aa, block[12], 8);
JJ(aa, bb, cc, dd, ee, block[ 2], 13);
JJ(ee, aa, bb, cc, dd, block[10], 12);
JJ(dd, ee, aa, bb, cc, block[14], 5);
JJ(cc, dd, ee, aa, bb, block[ 1], 12);
JJ(bb, cc, dd, ee, aa, block[ 3], 13);
JJ(aa, bb, cc, dd, ee, block[ 8], 14);
JJ(ee, aa, bb, cc, dd, block[11], 11);
JJ(dd, ee, aa, bb, cc, block[ 6], 8);
JJ(cc, dd, ee, aa, bb, block[15], 5);
JJ(bb, cc, dd, ee, aa, block[13], 6);
/* parallel round 1 */
JJJ(aaa, bbb, ccc, ddd, eee, block[ 5], 8);
JJJ(eee, aaa, bbb, ccc, ddd, block[14], 9);
JJJ(ddd, eee, aaa, bbb, ccc, block[ 7], 9);
JJJ(ccc, ddd, eee, aaa, bbb, block[ 0], 11);
JJJ(bbb, ccc, ddd, eee, aaa, block[ 9], 13);
JJJ(aaa, bbb, ccc, ddd, eee, block[ 2], 15);
JJJ(eee, aaa, bbb, ccc, ddd, block[11], 15);
JJJ(ddd, eee, aaa, bbb, ccc, block[ 4], 5);
JJJ(ccc, ddd, eee, aaa, bbb, block[13], 7);
JJJ(bbb, ccc, ddd, eee, aaa, block[ 6], 7);
JJJ(aaa, bbb, ccc, ddd, eee, block[15], 8);
JJJ(eee, aaa, bbb, ccc, ddd, block[ 8], 11);
JJJ(ddd, eee, aaa, bbb, ccc, block[ 1], 14);
JJJ(ccc, ddd, eee, aaa, bbb, block[10], 14);
JJJ(bbb, ccc, ddd, eee, aaa, block[ 3], 12);
JJJ(aaa, bbb, ccc, ddd, eee, block[12], 6);
/* parallel round 2 */
III(eee, aaa, bbb, ccc, ddd, block[ 6], 9);
III(ddd, eee, aaa, bbb, ccc, block[11], 13);
III(ccc, ddd, eee, aaa, bbb, block[ 3], 15);
III(bbb, ccc, ddd, eee, aaa, block[ 7], 7);
III(aaa, bbb, ccc, ddd, eee, block[ 0], 12);
III(eee, aaa, bbb, ccc, ddd, block[13], 8);
III(ddd, eee, aaa, bbb, ccc, block[ 5], 9);
III(ccc, ddd, eee, aaa, bbb, block[10], 11);
III(bbb, ccc, ddd, eee, aaa, block[14], 7);
III(aaa, bbb, ccc, ddd, eee, block[15], 7);
III(eee, aaa, bbb, ccc, ddd, block[ 8], 12);
III(ddd, eee, aaa, bbb, ccc, block[12], 7);
III(ccc, ddd, eee, aaa, bbb, block[ 4], 6);
III(bbb, ccc, ddd, eee, aaa, block[ 9], 15);
III(aaa, bbb, ccc, ddd, eee, block[ 1], 13);
III(eee, aaa, bbb, ccc, ddd, block[ 2], 11);
/* parallel round 3 */
HHH(ddd, eee, aaa, bbb, ccc, block[15], 9);
HHH(ccc, ddd, eee, aaa, bbb, block[ 5], 7);
HHH(bbb, ccc, ddd, eee, aaa, block[ 1], 15);
HHH(aaa, bbb, ccc, ddd, eee, block[ 3], 11);
HHH(eee, aaa, bbb, ccc, ddd, block[ 7], 8);
HHH(ddd, eee, aaa, bbb, ccc, block[14], 6);
HHH(ccc, ddd, eee, aaa, bbb, block[ 6], 6);
HHH(bbb, ccc, ddd, eee, aaa, block[ 9], 14);
HHH(aaa, bbb, ccc, ddd, eee, block[11], 12);
HHH(eee, aaa, bbb, ccc, ddd, block[ 8], 13);
HHH(ddd, eee, aaa, bbb, ccc, block[12], 5);
HHH(ccc, ddd, eee, aaa, bbb, block[ 2], 14);
HHH(bbb, ccc, ddd, eee, aaa, block[10], 13);
HHH(aaa, bbb, ccc, ddd, eee, block[ 0], 13);
HHH(eee, aaa, bbb, ccc, ddd, block[ 4], 7);
HHH(ddd, eee, aaa, bbb, ccc, block[13], 5);
/* parallel round 4 */
GGG(ccc, ddd, eee, aaa, bbb, block[ 8], 15);
GGG(bbb, ccc, ddd, eee, aaa, block[ 6], 5);
GGG(aaa, bbb, ccc, ddd, eee, block[ 4], 8);
GGG(eee, aaa, bbb, ccc, ddd, block[ 1], 11);
GGG(ddd, eee, aaa, bbb, ccc, block[ 3], 14);
GGG(ccc, ddd, eee, aaa, bbb, block[11], 14);
GGG(bbb, ccc, ddd, eee, aaa, block[15], 6);
GGG(aaa, bbb, ccc, ddd, eee, block[ 0], 14);
GGG(eee, aaa, bbb, ccc, ddd, block[ 5], 6);
GGG(ddd, eee, aaa, bbb, ccc, block[12], 9);
GGG(ccc, ddd, eee, aaa, bbb, block[ 2], 12);
GGG(bbb, ccc, ddd, eee, aaa, block[13], 9);
GGG(aaa, bbb, ccc, ddd, eee, block[ 9], 12);
GGG(eee, aaa, bbb, ccc, ddd, block[ 7], 5);
GGG(ddd, eee, aaa, bbb, ccc, block[10], 15);
GGG(ccc, ddd, eee, aaa, bbb, block[14], 8);
/* parallel round 5 */
FFF(bbb, ccc, ddd, eee, aaa, block[12] , 8);
FFF(aaa, bbb, ccc, ddd, eee, block[15] , 5);
FFF(eee, aaa, bbb, ccc, ddd, block[10] , 12);
FFF(ddd, eee, aaa, bbb, ccc, block[ 4] , 9);
FFF(ccc, ddd, eee, aaa, bbb, block[ 1] , 12);
FFF(bbb, ccc, ddd, eee, aaa, block[ 5] , 5);
FFF(aaa, bbb, ccc, ddd, eee, block[ 8] , 14);
FFF(eee, aaa, bbb, ccc, ddd, block[ 7] , 6);
FFF(ddd, eee, aaa, bbb, ccc, block[ 6] , 8);
FFF(ccc, ddd, eee, aaa, bbb, block[ 2] , 13);
FFF(bbb, ccc, ddd, eee, aaa, block[13] , 6);
FFF(aaa, bbb, ccc, ddd, eee, block[14] , 5);
FFF(eee, aaa, bbb, ccc, ddd, block[ 0] , 15);
FFF(ddd, eee, aaa, bbb, ccc, block[ 3] , 13);
FFF(ccc, ddd, eee, aaa, bbb, block[ 9] , 11);
FFF(bbb, ccc, ddd, eee, aaa, block[11] , 11);
/* combine results */
ddd += cc + state[1]; /* final result for state[0] */
state[1] = state[2] + dd + eee;
state[2] = state[3] + ee + aaa;
state[3] = state[4] + aa + bbb;
state[4] = state[0] + bb + ccc;
state[0] = ddd;
}
/********************************************************************/
void RMD160Update(context, data, nbytes)
RMD160_CTX *context;
const u_char *data;
u_int32_t nbytes;
{
u_int32_t X[16];
u_int32_t ofs = 0;
u_int32_t i;
#if BYTE_ORDER != LITTLE_ENDIAN
u_int32_t j;
#endif
/* update length[] */
if (context->length[0] + nbytes < context->length[0])
context->length[1]++; /* overflow to msb of length */
context->length[0] += nbytes;
bzero(X, sizeof(X));
if (context->buflen > 0) {
ofs = 64 - context->buflen;
bcopy(data, context->bbuffer + context->buflen, ofs);
#if BYTE_ORDER == LITTLE_ENDIAN
bcopy(context->bbuffer, X, sizeof(X));
#else
for (j=0; j < 16; j++)
X[j] = BYTES_TO_DWORD(context->bbuffer + (4 * j));
#endif
RMD160Transform(context->state, X);
nbytes -= ofs;
}
/* process all complete blocks */
for (i = 0; i < (nbytes >> 6); i++) {
#if BYTE_ORDER == LITTLE_ENDIAN
bcopy(data + (64 * i) + ofs, X, sizeof(X));
#else
for (j=0; j < 16; j++)
X[j] = BYTES_TO_DWORD(data + (64 * i) + (4 * j) + ofs);
#endif
RMD160Transform(context->state, X);
}
/*
* Put bytes from data into context's buffer
*/
context->buflen = nbytes & 63;
bcopy(data + (64 * i) + ofs, context->bbuffer, context->buflen);
}
/********************************************************************/
void RMD160Final(digest, context)
u_char digest[20];
RMD160_CTX *context;
{
u_int32_t i;
u_int32_t X[16];
#if BYTE_ORDER != LITTLE_ENDIAN
u_int32_t j;
#endif
/* append the bit m_n == 1 */
context->bbuffer[context->buflen] = '\200';
bzero(context->bbuffer + context->buflen + 1, 63 - context->buflen);
#if BYTE_ORDER == LITTLE_ENDIAN
bcopy(context->bbuffer, X, sizeof(X));
#else
for (j=0; j < 16; j++)
X[j] = BYTES_TO_DWORD(context->bbuffer + (4 * j));
#endif
if ((context->buflen) > 55) {
/* length goes to next block */
RMD160Transform(context->state, X);
bzero(X, sizeof(X));
}
/* append length in bits */
X[14] = context->length[0] << 3;
X[15] = (context->length[0] >> 29) |
(context->length[1] << 3);
RMD160Transform(context->state, X);
if (digest != NULL) {
for (i = 0; i < 20; i += 4) {
/* extracts the 8 least significant bits. */
digest[i] = context->state[i>>2];
digest[i + 1] = (context->state[i>>2] >> 8);
digest[i + 2] = (context->state[i>>2] >> 16);
digest[i + 3] = (context->state[i>>2] >> 24);
}
}
}
/************************ end of file rmd160.c **********************/
|
