Root/crypto/rmd320.c

1/*
2 * Cryptographic API.
3 *
4 * RIPEMD-320 - RACE Integrity Primitives Evaluation Message Digest.
5 *
6 * Based on the reference implementation by Antoon Bosselaers, ESAT-COSIC
7 *
8 * Copyright (c) 2008 Adrian-Ken Rueegsegger <rueegsegger (at) swiss-it.ch>
9 *
10 * This program is free software; you can redistribute it and/or modify it
11 * under the terms of the GNU General Public License as published by the Free
12 * Software Foundation; either version 2 of the License, or (at your option)
13 * any later version.
14 *
15 */
16#include <crypto/internal/hash.h>
17#include <linux/init.h>
18#include <linux/module.h>
19#include <linux/mm.h>
20#include <linux/types.h>
21#include <asm/byteorder.h>
22
23#include "ripemd.h"
24
25struct rmd320_ctx {
26    u64 byte_count;
27    u32 state[10];
28    __le32 buffer[16];
29};
30
31#define K1 RMD_K1
32#define K2 RMD_K2
33#define K3 RMD_K3
34#define K4 RMD_K4
35#define K5 RMD_K5
36#define KK1 RMD_K6
37#define KK2 RMD_K7
38#define KK3 RMD_K8
39#define KK4 RMD_K9
40#define KK5 RMD_K1
41
42#define F1(x, y, z) (x ^ y ^ z) /* XOR */
43#define F2(x, y, z) (z ^ (x & (y ^ z))) /* x ? y : z */
44#define F3(x, y, z) ((x | ~y) ^ z)
45#define F4(x, y, z) (y ^ (z & (x ^ y))) /* z ? x : y */
46#define F5(x, y, z) (x ^ (y | ~z))
47
48#define ROUND(a, b, c, d, e, f, k, x, s) { \
49    (a) += f((b), (c), (d)) + le32_to_cpup(&(x)) + (k); \
50    (a) = rol32((a), (s)) + (e); \
51    (c) = rol32((c), 10); \
52}
53
54static void rmd320_transform(u32 *state, const __le32 *in)
55{
56    u32 aa, bb, cc, dd, ee, aaa, bbb, ccc, ddd, eee, tmp;
57
58    /* Initialize left lane */
59    aa = state[0];
60    bb = state[1];
61    cc = state[2];
62    dd = state[3];
63    ee = state[4];
64
65    /* Initialize right lane */
66    aaa = state[5];
67    bbb = state[6];
68    ccc = state[7];
69    ddd = state[8];
70    eee = state[9];
71
72    /* round 1: left lane */
73    ROUND(aa, bb, cc, dd, ee, F1, K1, in[0], 11);
74    ROUND(ee, aa, bb, cc, dd, F1, K1, in[1], 14);
75    ROUND(dd, ee, aa, bb, cc, F1, K1, in[2], 15);
76    ROUND(cc, dd, ee, aa, bb, F1, K1, in[3], 12);
77    ROUND(bb, cc, dd, ee, aa, F1, K1, in[4], 5);
78    ROUND(aa, bb, cc, dd, ee, F1, K1, in[5], 8);
79    ROUND(ee, aa, bb, cc, dd, F1, K1, in[6], 7);
80    ROUND(dd, ee, aa, bb, cc, F1, K1, in[7], 9);
81    ROUND(cc, dd, ee, aa, bb, F1, K1, in[8], 11);
82    ROUND(bb, cc, dd, ee, aa, F1, K1, in[9], 13);
83    ROUND(aa, bb, cc, dd, ee, F1, K1, in[10], 14);
84    ROUND(ee, aa, bb, cc, dd, F1, K1, in[11], 15);
85    ROUND(dd, ee, aa, bb, cc, F1, K1, in[12], 6);
86    ROUND(cc, dd, ee, aa, bb, F1, K1, in[13], 7);
87    ROUND(bb, cc, dd, ee, aa, F1, K1, in[14], 9);
88    ROUND(aa, bb, cc, dd, ee, F1, K1, in[15], 8);
89
90    /* round 1: right lane */
91    ROUND(aaa, bbb, ccc, ddd, eee, F5, KK1, in[5], 8);
92    ROUND(eee, aaa, bbb, ccc, ddd, F5, KK1, in[14], 9);
93    ROUND(ddd, eee, aaa, bbb, ccc, F5, KK1, in[7], 9);
94    ROUND(ccc, ddd, eee, aaa, bbb, F5, KK1, in[0], 11);
95    ROUND(bbb, ccc, ddd, eee, aaa, F5, KK1, in[9], 13);
96    ROUND(aaa, bbb, ccc, ddd, eee, F5, KK1, in[2], 15);
97    ROUND(eee, aaa, bbb, ccc, ddd, F5, KK1, in[11], 15);
98    ROUND(ddd, eee, aaa, bbb, ccc, F5, KK1, in[4], 5);
99    ROUND(ccc, ddd, eee, aaa, bbb, F5, KK1, in[13], 7);
100    ROUND(bbb, ccc, ddd, eee, aaa, F5, KK1, in[6], 7);
101    ROUND(aaa, bbb, ccc, ddd, eee, F5, KK1, in[15], 8);
102    ROUND(eee, aaa, bbb, ccc, ddd, F5, KK1, in[8], 11);
103    ROUND(ddd, eee, aaa, bbb, ccc, F5, KK1, in[1], 14);
104    ROUND(ccc, ddd, eee, aaa, bbb, F5, KK1, in[10], 14);
105    ROUND(bbb, ccc, ddd, eee, aaa, F5, KK1, in[3], 12);
106    ROUND(aaa, bbb, ccc, ddd, eee, F5, KK1, in[12], 6);
107
108    /* Swap contents of "a" registers */
109    tmp = aa; aa = aaa; aaa = tmp;
110
111    /* round 2: left lane" */
112    ROUND(ee, aa, bb, cc, dd, F2, K2, in[7], 7);
113    ROUND(dd, ee, aa, bb, cc, F2, K2, in[4], 6);
114    ROUND(cc, dd, ee, aa, bb, F2, K2, in[13], 8);
115    ROUND(bb, cc, dd, ee, aa, F2, K2, in[1], 13);
116    ROUND(aa, bb, cc, dd, ee, F2, K2, in[10], 11);
117    ROUND(ee, aa, bb, cc, dd, F2, K2, in[6], 9);
118    ROUND(dd, ee, aa, bb, cc, F2, K2, in[15], 7);
119    ROUND(cc, dd, ee, aa, bb, F2, K2, in[3], 15);
120    ROUND(bb, cc, dd, ee, aa, F2, K2, in[12], 7);
121    ROUND(aa, bb, cc, dd, ee, F2, K2, in[0], 12);
122    ROUND(ee, aa, bb, cc, dd, F2, K2, in[9], 15);
123    ROUND(dd, ee, aa, bb, cc, F2, K2, in[5], 9);
124    ROUND(cc, dd, ee, aa, bb, F2, K2, in[2], 11);
125    ROUND(bb, cc, dd, ee, aa, F2, K2, in[14], 7);
126    ROUND(aa, bb, cc, dd, ee, F2, K2, in[11], 13);
127    ROUND(ee, aa, bb, cc, dd, F2, K2, in[8], 12);
128
129    /* round 2: right lane */
130    ROUND(eee, aaa, bbb, ccc, ddd, F4, KK2, in[6], 9);
131    ROUND(ddd, eee, aaa, bbb, ccc, F4, KK2, in[11], 13);
132    ROUND(ccc, ddd, eee, aaa, bbb, F4, KK2, in[3], 15);
133    ROUND(bbb, ccc, ddd, eee, aaa, F4, KK2, in[7], 7);
134    ROUND(aaa, bbb, ccc, ddd, eee, F4, KK2, in[0], 12);
135    ROUND(eee, aaa, bbb, ccc, ddd, F4, KK2, in[13], 8);
136    ROUND(ddd, eee, aaa, bbb, ccc, F4, KK2, in[5], 9);
137    ROUND(ccc, ddd, eee, aaa, bbb, F4, KK2, in[10], 11);
138    ROUND(bbb, ccc, ddd, eee, aaa, F4, KK2, in[14], 7);
139    ROUND(aaa, bbb, ccc, ddd, eee, F4, KK2, in[15], 7);
140    ROUND(eee, aaa, bbb, ccc, ddd, F4, KK2, in[8], 12);
141    ROUND(ddd, eee, aaa, bbb, ccc, F4, KK2, in[12], 7);
142    ROUND(ccc, ddd, eee, aaa, bbb, F4, KK2, in[4], 6);
143    ROUND(bbb, ccc, ddd, eee, aaa, F4, KK2, in[9], 15);
144    ROUND(aaa, bbb, ccc, ddd, eee, F4, KK2, in[1], 13);
145    ROUND(eee, aaa, bbb, ccc, ddd, F4, KK2, in[2], 11);
146
147    /* Swap contents of "b" registers */
148    tmp = bb; bb = bbb; bbb = tmp;
149
150    /* round 3: left lane" */
151    ROUND(dd, ee, aa, bb, cc, F3, K3, in[3], 11);
152    ROUND(cc, dd, ee, aa, bb, F3, K3, in[10], 13);
153    ROUND(bb, cc, dd, ee, aa, F3, K3, in[14], 6);
154    ROUND(aa, bb, cc, dd, ee, F3, K3, in[4], 7);
155    ROUND(ee, aa, bb, cc, dd, F3, K3, in[9], 14);
156    ROUND(dd, ee, aa, bb, cc, F3, K3, in[15], 9);
157    ROUND(cc, dd, ee, aa, bb, F3, K3, in[8], 13);
158    ROUND(bb, cc, dd, ee, aa, F3, K3, in[1], 15);
159    ROUND(aa, bb, cc, dd, ee, F3, K3, in[2], 14);
160    ROUND(ee, aa, bb, cc, dd, F3, K3, in[7], 8);
161    ROUND(dd, ee, aa, bb, cc, F3, K3, in[0], 13);
162    ROUND(cc, dd, ee, aa, bb, F3, K3, in[6], 6);
163    ROUND(bb, cc, dd, ee, aa, F3, K3, in[13], 5);
164    ROUND(aa, bb, cc, dd, ee, F3, K3, in[11], 12);
165    ROUND(ee, aa, bb, cc, dd, F3, K3, in[5], 7);
166    ROUND(dd, ee, aa, bb, cc, F3, K3, in[12], 5);
167
168    /* round 3: right lane */
169    ROUND(ddd, eee, aaa, bbb, ccc, F3, KK3, in[15], 9);
170    ROUND(ccc, ddd, eee, aaa, bbb, F3, KK3, in[5], 7);
171    ROUND(bbb, ccc, ddd, eee, aaa, F3, KK3, in[1], 15);
172    ROUND(aaa, bbb, ccc, ddd, eee, F3, KK3, in[3], 11);
173    ROUND(eee, aaa, bbb, ccc, ddd, F3, KK3, in[7], 8);
174    ROUND(ddd, eee, aaa, bbb, ccc, F3, KK3, in[14], 6);
175    ROUND(ccc, ddd, eee, aaa, bbb, F3, KK3, in[6], 6);
176    ROUND(bbb, ccc, ddd, eee, aaa, F3, KK3, in[9], 14);
177    ROUND(aaa, bbb, ccc, ddd, eee, F3, KK3, in[11], 12);
178    ROUND(eee, aaa, bbb, ccc, ddd, F3, KK3, in[8], 13);
179    ROUND(ddd, eee, aaa, bbb, ccc, F3, KK3, in[12], 5);
180    ROUND(ccc, ddd, eee, aaa, bbb, F3, KK3, in[2], 14);
181    ROUND(bbb, ccc, ddd, eee, aaa, F3, KK3, in[10], 13);
182    ROUND(aaa, bbb, ccc, ddd, eee, F3, KK3, in[0], 13);
183    ROUND(eee, aaa, bbb, ccc, ddd, F3, KK3, in[4], 7);
184    ROUND(ddd, eee, aaa, bbb, ccc, F3, KK3, in[13], 5);
185
186    /* Swap contents of "c" registers */
187    tmp = cc; cc = ccc; ccc = tmp;
188
189    /* round 4: left lane" */
190    ROUND(cc, dd, ee, aa, bb, F4, K4, in[1], 11);
191    ROUND(bb, cc, dd, ee, aa, F4, K4, in[9], 12);
192    ROUND(aa, bb, cc, dd, ee, F4, K4, in[11], 14);
193    ROUND(ee, aa, bb, cc, dd, F4, K4, in[10], 15);
194    ROUND(dd, ee, aa, bb, cc, F4, K4, in[0], 14);
195    ROUND(cc, dd, ee, aa, bb, F4, K4, in[8], 15);
196    ROUND(bb, cc, dd, ee, aa, F4, K4, in[12], 9);
197    ROUND(aa, bb, cc, dd, ee, F4, K4, in[4], 8);
198    ROUND(ee, aa, bb, cc, dd, F4, K4, in[13], 9);
199    ROUND(dd, ee, aa, bb, cc, F4, K4, in[3], 14);
200    ROUND(cc, dd, ee, aa, bb, F4, K4, in[7], 5);
201    ROUND(bb, cc, dd, ee, aa, F4, K4, in[15], 6);
202    ROUND(aa, bb, cc, dd, ee, F4, K4, in[14], 8);
203    ROUND(ee, aa, bb, cc, dd, F4, K4, in[5], 6);
204    ROUND(dd, ee, aa, bb, cc, F4, K4, in[6], 5);
205    ROUND(cc, dd, ee, aa, bb, F4, K4, in[2], 12);
206
207    /* round 4: right lane */
208    ROUND(ccc, ddd, eee, aaa, bbb, F2, KK4, in[8], 15);
209    ROUND(bbb, ccc, ddd, eee, aaa, F2, KK4, in[6], 5);
210    ROUND(aaa, bbb, ccc, ddd, eee, F2, KK4, in[4], 8);
211    ROUND(eee, aaa, bbb, ccc, ddd, F2, KK4, in[1], 11);
212    ROUND(ddd, eee, aaa, bbb, ccc, F2, KK4, in[3], 14);
213    ROUND(ccc, ddd, eee, aaa, bbb, F2, KK4, in[11], 14);
214    ROUND(bbb, ccc, ddd, eee, aaa, F2, KK4, in[15], 6);
215    ROUND(aaa, bbb, ccc, ddd, eee, F2, KK4, in[0], 14);
216    ROUND(eee, aaa, bbb, ccc, ddd, F2, KK4, in[5], 6);
217    ROUND(ddd, eee, aaa, bbb, ccc, F2, KK4, in[12], 9);
218    ROUND(ccc, ddd, eee, aaa, bbb, F2, KK4, in[2], 12);
219    ROUND(bbb, ccc, ddd, eee, aaa, F2, KK4, in[13], 9);
220    ROUND(aaa, bbb, ccc, ddd, eee, F2, KK4, in[9], 12);
221    ROUND(eee, aaa, bbb, ccc, ddd, F2, KK4, in[7], 5);
222    ROUND(ddd, eee, aaa, bbb, ccc, F2, KK4, in[10], 15);
223    ROUND(ccc, ddd, eee, aaa, bbb, F2, KK4, in[14], 8);
224
225    /* Swap contents of "d" registers */
226    tmp = dd; dd = ddd; ddd = tmp;
227
228    /* round 5: left lane" */
229    ROUND(bb, cc, dd, ee, aa, F5, K5, in[4], 9);
230    ROUND(aa, bb, cc, dd, ee, F5, K5, in[0], 15);
231    ROUND(ee, aa, bb, cc, dd, F5, K5, in[5], 5);
232    ROUND(dd, ee, aa, bb, cc, F5, K5, in[9], 11);
233    ROUND(cc, dd, ee, aa, bb, F5, K5, in[7], 6);
234    ROUND(bb, cc, dd, ee, aa, F5, K5, in[12], 8);
235    ROUND(aa, bb, cc, dd, ee, F5, K5, in[2], 13);
236    ROUND(ee, aa, bb, cc, dd, F5, K5, in[10], 12);
237    ROUND(dd, ee, aa, bb, cc, F5, K5, in[14], 5);
238    ROUND(cc, dd, ee, aa, bb, F5, K5, in[1], 12);
239    ROUND(bb, cc, dd, ee, aa, F5, K5, in[3], 13);
240    ROUND(aa, bb, cc, dd, ee, F5, K5, in[8], 14);
241    ROUND(ee, aa, bb, cc, dd, F5, K5, in[11], 11);
242    ROUND(dd, ee, aa, bb, cc, F5, K5, in[6], 8);
243    ROUND(cc, dd, ee, aa, bb, F5, K5, in[15], 5);
244    ROUND(bb, cc, dd, ee, aa, F5, K5, in[13], 6);
245
246    /* round 5: right lane */
247    ROUND(bbb, ccc, ddd, eee, aaa, F1, KK5, in[12], 8);
248    ROUND(aaa, bbb, ccc, ddd, eee, F1, KK5, in[15], 5);
249    ROUND(eee, aaa, bbb, ccc, ddd, F1, KK5, in[10], 12);
250    ROUND(ddd, eee, aaa, bbb, ccc, F1, KK5, in[4], 9);
251    ROUND(ccc, ddd, eee, aaa, bbb, F1, KK5, in[1], 12);
252    ROUND(bbb, ccc, ddd, eee, aaa, F1, KK5, in[5], 5);
253    ROUND(aaa, bbb, ccc, ddd, eee, F1, KK5, in[8], 14);
254    ROUND(eee, aaa, bbb, ccc, ddd, F1, KK5, in[7], 6);
255    ROUND(ddd, eee, aaa, bbb, ccc, F1, KK5, in[6], 8);
256    ROUND(ccc, ddd, eee, aaa, bbb, F1, KK5, in[2], 13);
257    ROUND(bbb, ccc, ddd, eee, aaa, F1, KK5, in[13], 6);
258    ROUND(aaa, bbb, ccc, ddd, eee, F1, KK5, in[14], 5);
259    ROUND(eee, aaa, bbb, ccc, ddd, F1, KK5, in[0], 15);
260    ROUND(ddd, eee, aaa, bbb, ccc, F1, KK5, in[3], 13);
261    ROUND(ccc, ddd, eee, aaa, bbb, F1, KK5, in[9], 11);
262    ROUND(bbb, ccc, ddd, eee, aaa, F1, KK5, in[11], 11);
263
264    /* Swap contents of "e" registers */
265    tmp = ee; ee = eee; eee = tmp;
266
267    /* combine results */
268    state[0] += aa;
269    state[1] += bb;
270    state[2] += cc;
271    state[3] += dd;
272    state[4] += ee;
273    state[5] += aaa;
274    state[6] += bbb;
275    state[7] += ccc;
276    state[8] += ddd;
277    state[9] += eee;
278
279    return;
280}
281
282static int rmd320_init(struct shash_desc *desc)
283{
284    struct rmd320_ctx *rctx = shash_desc_ctx(desc);
285
286    rctx->byte_count = 0;
287
288    rctx->state[0] = RMD_H0;
289    rctx->state[1] = RMD_H1;
290    rctx->state[2] = RMD_H2;
291    rctx->state[3] = RMD_H3;
292    rctx->state[4] = RMD_H4;
293    rctx->state[5] = RMD_H5;
294    rctx->state[6] = RMD_H6;
295    rctx->state[7] = RMD_H7;
296    rctx->state[8] = RMD_H8;
297    rctx->state[9] = RMD_H9;
298
299    memset(rctx->buffer, 0, sizeof(rctx->buffer));
300
301    return 0;
302}
303
304static int rmd320_update(struct shash_desc *desc, const u8 *data,
305             unsigned int len)
306{
307    struct rmd320_ctx *rctx = shash_desc_ctx(desc);
308    const u32 avail = sizeof(rctx->buffer) - (rctx->byte_count & 0x3f);
309
310    rctx->byte_count += len;
311
312    /* Enough space in buffer? If so copy and we're done */
313    if (avail > len) {
314        memcpy((char *)rctx->buffer + (sizeof(rctx->buffer) - avail),
315               data, len);
316        goto out;
317    }
318
319    memcpy((char *)rctx->buffer + (sizeof(rctx->buffer) - avail),
320           data, avail);
321
322    rmd320_transform(rctx->state, rctx->buffer);
323    data += avail;
324    len -= avail;
325
326    while (len >= sizeof(rctx->buffer)) {
327        memcpy(rctx->buffer, data, sizeof(rctx->buffer));
328        rmd320_transform(rctx->state, rctx->buffer);
329        data += sizeof(rctx->buffer);
330        len -= sizeof(rctx->buffer);
331    }
332
333    memcpy(rctx->buffer, data, len);
334
335out:
336    return 0;
337}
338
339/* Add padding and return the message digest. */
340static int rmd320_final(struct shash_desc *desc, u8 *out)
341{
342    struct rmd320_ctx *rctx = shash_desc_ctx(desc);
343    u32 i, index, padlen;
344    __le64 bits;
345    __le32 *dst = (__le32 *)out;
346    static const u8 padding[64] = { 0x80, };
347
348    bits = cpu_to_le64(rctx->byte_count << 3);
349
350    /* Pad out to 56 mod 64 */
351    index = rctx->byte_count & 0x3f;
352    padlen = (index < 56) ? (56 - index) : ((64+56) - index);
353    rmd320_update(desc, padding, padlen);
354
355    /* Append length */
356    rmd320_update(desc, (const u8 *)&bits, sizeof(bits));
357
358    /* Store state in digest */
359    for (i = 0; i < 10; i++)
360        dst[i] = cpu_to_le32p(&rctx->state[i]);
361
362    /* Wipe context */
363    memset(rctx, 0, sizeof(*rctx));
364
365    return 0;
366}
367
368static struct shash_alg alg = {
369    .digestsize = RMD320_DIGEST_SIZE,
370    .init = rmd320_init,
371    .update = rmd320_update,
372    .final = rmd320_final,
373    .descsize = sizeof(struct rmd320_ctx),
374    .base = {
375        .cra_name = "rmd320",
376        .cra_flags = CRYPTO_ALG_TYPE_SHASH,
377        .cra_blocksize = RMD320_BLOCK_SIZE,
378        .cra_module = THIS_MODULE,
379    }
380};
381
382static int __init rmd320_mod_init(void)
383{
384    return crypto_register_shash(&alg);
385}
386
387static void __exit rmd320_mod_fini(void)
388{
389    crypto_unregister_shash(&alg);
390}
391
392module_init(rmd320_mod_init);
393module_exit(rmd320_mod_fini);
394
395MODULE_LICENSE("GPL");
396MODULE_DESCRIPTION("RIPEMD-320 Message Digest");
397

Archive Download this file

Branches:
ben-wpan
ben-wpan-stefan
javiroman/ks7010
jz-2.6.34
jz-2.6.34-rc5
jz-2.6.34-rc6
jz-2.6.34-rc7
jz-2.6.35
jz-2.6.36
jz-2.6.37
jz-2.6.38
jz-2.6.39
jz-3.0
jz-3.1
jz-3.11
jz-3.12
jz-3.13
jz-3.15
jz-3.16
jz-3.18-dt
jz-3.2
jz-3.3
jz-3.4
jz-3.5
jz-3.6
jz-3.6-rc2-pwm
jz-3.9
jz-3.9-clk
jz-3.9-rc8
jz47xx
jz47xx-2.6.38
master

Tags:
od-2011-09-04
od-2011-09-18
v2.6.34-rc5
v2.6.34-rc6
v2.6.34-rc7
v3.9



interactive