GCC Code Coverage Report
Directory: ./ Exec Total Coverage
File: lib/libc/hash/rmd160.c Lines: 0 200 0.0 %
Date: 2017-11-13 Branches: 0 12 0.0 %

Line Branch Exec Source
1
/*
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 * Copyright (c) 2001 Markus Friedl.  All rights reserved.
3
 *
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 * Redistribution and use in source and binary forms, with or without
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 * modification, are permitted provided that the following conditions
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 * are met:
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 * 1. Redistributions of source code must retain the above copyright
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 *    notice, this list of conditions and the following disclaimer.
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 * 2. Redistributions in binary form must reproduce the above copyright
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 *    notice, this list of conditions and the following disclaimer in the
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 *    documentation and/or other materials provided with the distribution.
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 *
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 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
14
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
23
 */
24
/*
25
 * Preneel, Bosselaers, Dobbertin, "The Cryptographic Hash Function RIPEMD-160",
26
 * RSA Laboratories, CryptoBytes, Volume 3, Number 2, Autumn 1997,
27
 * ftp://ftp.rsasecurity.com/pub/cryptobytes/crypto3n2.pdf
28
 */
29
#include <sys/types.h>
30
#include <endian.h>
31
#include <string.h>
32
#include <rmd160.h>
33
34
#define PUT_64BIT_LE(cp, value) do {                                    \
35
	(cp)[7] = (value) >> 56;                                        \
36
	(cp)[6] = (value) >> 48;                                        \
37
	(cp)[5] = (value) >> 40;                                        \
38
	(cp)[4] = (value) >> 32;                                        \
39
	(cp)[3] = (value) >> 24;                                        \
40
	(cp)[2] = (value) >> 16;                                        \
41
	(cp)[1] = (value) >> 8;                                         \
42
	(cp)[0] = (value); } while (0)
43
44
#define PUT_32BIT_LE(cp, value) do {                                    \
45
	(cp)[3] = (value) >> 24;                                        \
46
	(cp)[2] = (value) >> 16;                                        \
47
	(cp)[1] = (value) >> 8;                                         \
48
	(cp)[0] = (value); } while (0)
49
50
#define	H0	0x67452301U
51
#define	H1	0xEFCDAB89U
52
#define	H2	0x98BADCFEU
53
#define	H3	0x10325476U
54
#define	H4	0xC3D2E1F0U
55
56
#define	K0	0x00000000U
57
#define	K1	0x5A827999U
58
#define	K2	0x6ED9EBA1U
59
#define	K3	0x8F1BBCDCU
60
#define	K4	0xA953FD4EU
61
62
#define	KK0	0x50A28BE6U
63
#define	KK1	0x5C4DD124U
64
#define	KK2	0x6D703EF3U
65
#define	KK3	0x7A6D76E9U
66
#define	KK4	0x00000000U
67
68
/* rotate x left n bits.  */
69
#define ROL(n, x) (((x) << (n)) | ((x) >> (32-(n))))
70
71
#define F0(x, y, z) ((x) ^ (y) ^ (z))
72
#define F1(x, y, z) (((x) & (y)) | ((~x) & (z)))
73
#define F2(x, y, z) (((x) | (~y)) ^ (z))
74
#define F3(x, y, z) (((x) & (z)) | ((y) & (~z)))
75
#define F4(x, y, z) ((x) ^ ((y) | (~z)))
76
77
#define R(a, b, c, d, e, Fj, Kj, sj, rj)                                \
78
	do {                                                            \
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		a = ROL(sj, a + Fj(b,c,d) + X(rj) + Kj) + e;            \
80
		c = ROL(10, c);                                         \
81
	} while(0)
82
83
#define X(i)	x[i]
84
85
static u_int8_t PADDING[RMD160_BLOCK_LENGTH] = {
86
	0x80, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
89
};
90
91
void
92
RMD160Init(RMD160_CTX *ctx)
93
{
94
	ctx->count = 0;
95
	ctx->state[0] = H0;
96
	ctx->state[1] = H1;
97
	ctx->state[2] = H2;
98
	ctx->state[3] = H3;
99
	ctx->state[4] = H4;
100
}
101
DEF_WEAK(RMD160Init);
102
103
void
104
RMD160Update(RMD160_CTX *ctx, const u_int8_t *input, size_t len)
105
{
106
	size_t have, off, need;
107
108
	have = (ctx->count / 8) % RMD160_BLOCK_LENGTH;
109
	need = RMD160_BLOCK_LENGTH - 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 + RMD160_BLOCK_LENGTH <= len) {
122
			RMD160Transform(ctx->state, input+off);
123
			off += RMD160_BLOCK_LENGTH;
124
		}
125
	}
126
	if (off < len)
127
		memcpy(ctx->buffer + have, input+off, len-off);
128
}
129
DEF_WEAK(RMD160Update);
130
131
void
132
RMD160Pad(RMD160_CTX *ctx)
133
{
134
	u_int8_t size[8];
135
	size_t padlen;
136
137
	PUT_64BIT_LE(size, ctx->count);
138
139
	/*
140
	 * pad to RMD160_BLOCK_LENGTH byte blocks, at least one byte from
141
	 * PADDING plus 8 bytes for the size
142
	 */
143
	padlen = RMD160_BLOCK_LENGTH - ((ctx->count / 8) % RMD160_BLOCK_LENGTH);
144
	if (padlen < 1 + 8)
145
		padlen += RMD160_BLOCK_LENGTH;
146
	RMD160Update(ctx, PADDING, padlen - 8);		/* padlen - 8 <= 64 */
147
	RMD160Update(ctx, size, 8);
148
}
149
DEF_WEAK(RMD160Pad);
150
151
void
152
RMD160Final(u_int8_t digest[RMD160_DIGEST_LENGTH], RMD160_CTX *ctx)
153
{
154
	int i;
155
156
	RMD160Pad(ctx);
157
	for (i = 0; i < 5; i++)
158
		PUT_32BIT_LE(digest + i*4, ctx->state[i]);
159
	explicit_bzero(ctx, sizeof (*ctx));
160
}
161
DEF_WEAK(RMD160Final);
162
163
void
164
RMD160Transform(u_int32_t state[5], const u_int8_t block[RMD160_BLOCK_LENGTH])
165
{
166
	u_int32_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, RMD160_BLOCK_LENGTH);
170
#else
171
	int i;
172
173
	for (i = 0; i < 16; i++)
174
		x[i] = (u_int32_t)(
175
		    (u_int32_t)(block[i*4 + 0]) |
176
		    (u_int32_t)(block[i*4 + 1]) <<  8 |
177
		    (u_int32_t)(block[i*4 + 2]) << 16 |
178
		    (u_int32_t)(block[i*4 + 3]) << 24);
179
#endif
180
181
	a = state[0];
182
	b = state[1];
183
	c = state[2];
184
	d = state[3];
185
	e = state[4];
186
187
	/* Round 1 */
188
	R(a, b, c, d, e, F0, K0, 11,  0);
189
	R(e, a, b, c, d, F0, K0, 14,  1);
190
	R(d, e, a, b, c, F0, K0, 15,  2);
191
	R(c, d, e, a, b, F0, K0, 12,  3);
192
	R(b, c, d, e, a, F0, K0,  5,  4);
193
	R(a, b, c, d, e, F0, K0,  8,  5);
194
	R(e, a, b, c, d, F0, K0,  7,  6);
195
	R(d, e, a, b, c, F0, K0,  9,  7);
196
	R(c, d, e, a, b, F0, K0, 11,  8);
197
	R(b, c, d, e, a, F0, K0, 13,  9);
198
	R(a, b, c, d, e, F0, K0, 14, 10);
199
	R(e, a, b, c, d, F0, K0, 15, 11);
200
	R(d, e, a, b, c, F0, K0,  6, 12);
201
	R(c, d, e, a, b, F0, K0,  7, 13);
202
	R(b, c, d, e, a, F0, K0,  9, 14);
203
	R(a, b, c, d, e, F0, K0,  8, 15); /* #15 */
204
	/* Round 2 */
205
	R(e, a, b, c, d, F1, K1,  7,  7);
206
	R(d, e, a, b, c, F1, K1,  6,  4);
207
	R(c, d, e, a, b, F1, K1,  8, 13);
208
	R(b, c, d, e, a, F1, K1, 13,  1);
209
	R(a, b, c, d, e, F1, K1, 11, 10);
210
	R(e, a, b, c, d, F1, K1,  9,  6);
211
	R(d, e, a, b, c, F1, K1,  7, 15);
212
	R(c, d, e, a, b, F1, K1, 15,  3);
213
	R(b, c, d, e, a, F1, K1,  7, 12);
214
	R(a, b, c, d, e, F1, K1, 12,  0);
215
	R(e, a, b, c, d, F1, K1, 15,  9);
216
	R(d, e, a, b, c, F1, K1,  9,  5);
217
	R(c, d, e, a, b, F1, K1, 11,  2);
218
	R(b, c, d, e, a, F1, K1,  7, 14);
219
	R(a, b, c, d, e, F1, K1, 13, 11);
220
	R(e, a, b, c, d, F1, K1, 12,  8); /* #31 */
221
	/* Round 3 */
222
	R(d, e, a, b, c, F2, K2, 11,  3);
223
	R(c, d, e, a, b, F2, K2, 13, 10);
224
	R(b, c, d, e, a, F2, K2,  6, 14);
225
	R(a, b, c, d, e, F2, K2,  7,  4);
226
	R(e, a, b, c, d, F2, K2, 14,  9);
227
	R(d, e, a, b, c, F2, K2,  9, 15);
228
	R(c, d, e, a, b, F2, K2, 13,  8);
229
	R(b, c, d, e, a, F2, K2, 15,  1);
230
	R(a, b, c, d, e, F2, K2, 14,  2);
231
	R(e, a, b, c, d, F2, K2,  8,  7);
232
	R(d, e, a, b, c, F2, K2, 13,  0);
233
	R(c, d, e, a, b, F2, K2,  6,  6);
234
	R(b, c, d, e, a, F2, K2,  5, 13);
235
	R(a, b, c, d, e, F2, K2, 12, 11);
236
	R(e, a, b, c, d, F2, K2,  7,  5);
237
	R(d, e, a, b, c, F2, K2,  5, 12); /* #47 */
238
	/* Round 4 */
239
	R(c, d, e, a, b, F3, K3, 11,  1);
240
	R(b, c, d, e, a, F3, K3, 12,  9);
241
	R(a, b, c, d, e, F3, K3, 14, 11);
242
	R(e, a, b, c, d, F3, K3, 15, 10);
243
	R(d, e, a, b, c, F3, K3, 14,  0);
244
	R(c, d, e, a, b, F3, K3, 15,  8);
245
	R(b, c, d, e, a, F3, K3,  9, 12);
246
	R(a, b, c, d, e, F3, K3,  8,  4);
247
	R(e, a, b, c, d, F3, K3,  9, 13);
248
	R(d, e, a, b, c, F3, K3, 14,  3);
249
	R(c, d, e, a, b, F3, K3,  5,  7);
250
	R(b, c, d, e, a, F3, K3,  6, 15);
251
	R(a, b, c, d, e, F3, K3,  8, 14);
252
	R(e, a, b, c, d, F3, K3,  6,  5);
253
	R(d, e, a, b, c, F3, K3,  5,  6);
254
	R(c, d, e, a, b, F3, K3, 12,  2); /* #63 */
255
	/* Round 5 */
256
	R(b, c, d, e, a, F4, K4,  9,  4);
257
	R(a, b, c, d, e, F4, K4, 15,  0);
258
	R(e, a, b, c, d, F4, K4,  5,  5);
259
	R(d, e, a, b, c, F4, K4, 11,  9);
260
	R(c, d, e, a, b, F4, K4,  6,  7);
261
	R(b, c, d, e, a, F4, K4,  8, 12);
262
	R(a, b, c, d, e, F4, K4, 13,  2);
263
	R(e, a, b, c, d, F4, K4, 12, 10);
264
	R(d, e, a, b, c, F4, K4,  5, 14);
265
	R(c, d, e, a, b, F4, K4, 12,  1);
266
	R(b, c, d, e, a, F4, K4, 13,  3);
267
	R(a, b, c, d, e, F4, K4, 14,  8);
268
	R(e, a, b, c, d, F4, K4, 11, 11);
269
	R(d, e, a, b, c, F4, K4,  8,  6);
270
	R(c, d, e, a, b, F4, K4,  5, 15);
271
	R(b, c, d, e, a, F4, K4,  6, 13); /* #79 */
272
273
	aa = a ; bb = b; cc = c; dd = d; ee = e;
274
275
	a = state[0];
276
	b = state[1];
277
	c = state[2];
278
	d = state[3];
279
	e = state[4];
280
281
	/* Parallel round 1 */
282
	R(a, b, c, d, e, F4, KK0,  8,  5);
283
	R(e, a, b, c, d, F4, KK0,  9, 14);
284
	R(d, e, a, b, c, F4, KK0,  9,  7);
285
	R(c, d, e, a, b, F4, KK0, 11,  0);
286
	R(b, c, d, e, a, F4, KK0, 13,  9);
287
	R(a, b, c, d, e, F4, KK0, 15,  2);
288
	R(e, a, b, c, d, F4, KK0, 15, 11);
289
	R(d, e, a, b, c, F4, KK0,  5,  4);
290
	R(c, d, e, a, b, F4, KK0,  7, 13);
291
	R(b, c, d, e, a, F4, KK0,  7,  6);
292
	R(a, b, c, d, e, F4, KK0,  8, 15);
293
	R(e, a, b, c, d, F4, KK0, 11,  8);
294
	R(d, e, a, b, c, F4, KK0, 14,  1);
295
	R(c, d, e, a, b, F4, KK0, 14, 10);
296
	R(b, c, d, e, a, F4, KK0, 12,  3);
297
	R(a, b, c, d, e, F4, KK0,  6, 12); /* #15 */
298
	/* Parallel round 2 */
299
	R(e, a, b, c, d, F3, KK1,  9,  6);
300
	R(d, e, a, b, c, F3, KK1, 13, 11);
301
	R(c, d, e, a, b, F3, KK1, 15,  3);
302
	R(b, c, d, e, a, F3, KK1,  7,  7);
303
	R(a, b, c, d, e, F3, KK1, 12,  0);
304
	R(e, a, b, c, d, F3, KK1,  8, 13);
305
	R(d, e, a, b, c, F3, KK1,  9,  5);
306
	R(c, d, e, a, b, F3, KK1, 11, 10);
307
	R(b, c, d, e, a, F3, KK1,  7, 14);
308
	R(a, b, c, d, e, F3, KK1,  7, 15);
309
	R(e, a, b, c, d, F3, KK1, 12,  8);
310
	R(d, e, a, b, c, F3, KK1,  7, 12);
311
	R(c, d, e, a, b, F3, KK1,  6,  4);
312
	R(b, c, d, e, a, F3, KK1, 15,  9);
313
	R(a, b, c, d, e, F3, KK1, 13,  1);
314
	R(e, a, b, c, d, F3, KK1, 11,  2); /* #31 */
315
	/* Parallel round 3 */
316
	R(d, e, a, b, c, F2, KK2,  9, 15);
317
	R(c, d, e, a, b, F2, KK2,  7,  5);
318
	R(b, c, d, e, a, F2, KK2, 15,  1);
319
	R(a, b, c, d, e, F2, KK2, 11,  3);
320
	R(e, a, b, c, d, F2, KK2,  8,  7);
321
	R(d, e, a, b, c, F2, KK2,  6, 14);
322
	R(c, d, e, a, b, F2, KK2,  6,  6);
323
	R(b, c, d, e, a, F2, KK2, 14,  9);
324
	R(a, b, c, d, e, F2, KK2, 12, 11);
325
	R(e, a, b, c, d, F2, KK2, 13,  8);
326
	R(d, e, a, b, c, F2, KK2,  5, 12);
327
	R(c, d, e, a, b, F2, KK2, 14,  2);
328
	R(b, c, d, e, a, F2, KK2, 13, 10);
329
	R(a, b, c, d, e, F2, KK2, 13,  0);
330
	R(e, a, b, c, d, F2, KK2,  7,  4);
331
	R(d, e, a, b, c, F2, KK2,  5, 13); /* #47 */
332
	/* Parallel round 4 */
333
	R(c, d, e, a, b, F1, KK3, 15,  8);
334
	R(b, c, d, e, a, F1, KK3,  5,  6);
335
	R(a, b, c, d, e, F1, KK3,  8,  4);
336
	R(e, a, b, c, d, F1, KK3, 11,  1);
337
	R(d, e, a, b, c, F1, KK3, 14,  3);
338
	R(c, d, e, a, b, F1, KK3, 14, 11);
339
	R(b, c, d, e, a, F1, KK3,  6, 15);
340
	R(a, b, c, d, e, F1, KK3, 14,  0);
341
	R(e, a, b, c, d, F1, KK3,  6,  5);
342
	R(d, e, a, b, c, F1, KK3,  9, 12);
343
	R(c, d, e, a, b, F1, KK3, 12,  2);
344
	R(b, c, d, e, a, F1, KK3,  9, 13);
345
	R(a, b, c, d, e, F1, KK3, 12,  9);
346
	R(e, a, b, c, d, F1, KK3,  5,  7);
347
	R(d, e, a, b, c, F1, KK3, 15, 10);
348
	R(c, d, e, a, b, F1, KK3,  8, 14); /* #63 */
349
	/* Parallel round 5 */
350
	R(b, c, d, e, a, F0, KK4,  8, 12);
351
	R(a, b, c, d, e, F0, KK4,  5, 15);
352
	R(e, a, b, c, d, F0, KK4, 12, 10);
353
	R(d, e, a, b, c, F0, KK4,  9,  4);
354
	R(c, d, e, a, b, F0, KK4, 12,  1);
355
	R(b, c, d, e, a, F0, KK4,  5,  5);
356
	R(a, b, c, d, e, F0, KK4, 14,  8);
357
	R(e, a, b, c, d, F0, KK4,  6,  7);
358
	R(d, e, a, b, c, F0, KK4,  8,  6);
359
	R(c, d, e, a, b, F0, KK4, 13,  2);
360
	R(b, c, d, e, a, F0, KK4,  6, 13);
361
	R(a, b, c, d, e, F0, KK4,  5, 14);
362
	R(e, a, b, c, d, F0, KK4, 15,  0);
363
	R(d, e, a, b, c, F0, KK4, 13,  3);
364
	R(c, d, e, a, b, F0, KK4, 11,  9);
365
	R(b, c, d, e, a, F0, KK4, 11, 11); /* #79 */
366
367
	t =        state[1] + cc + d;
368
	state[1] = state[2] + dd + e;
369
	state[2] = state[3] + ee + a;
370
	state[3] = state[4] + aa + b;
371
	state[4] = state[0] + bb + c;
372
	state[0] = t;
373
}
374
DEF_WEAK(RMD160Transform);