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authorIngo Molnar <mingo@elte.hu>2008-10-15 07:46:29 -0400
committerIngo Molnar <mingo@elte.hu>2008-10-15 07:46:29 -0400
commitb2aaf8f74cdc84a9182f6cabf198b7763bcb9d40 (patch)
tree53ccb1c2c14751fe69cf93102e76e97021f6df07 /crypto/rmd320.c
parent4f962d4d65923d7b722192e729840cfb79af0a5a (diff)
parent278429cff8809958d25415ba0ed32b59866ab1a8 (diff)
Merge branch 'linus' into stackprotector
Conflicts: arch/x86/kernel/Makefile include/asm-x86/pda.h
Diffstat (limited to 'crypto/rmd320.c')
-rw-r--r--crypto/rmd320.c393
1 files changed, 393 insertions, 0 deletions
diff --git a/crypto/rmd320.c b/crypto/rmd320.c
new file mode 100644
index 000000000000..b143d66e42c8
--- /dev/null
+++ b/crypto/rmd320.c
@@ -0,0 +1,393 @@
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 <linux/init.h>
17#include <linux/module.h>
18#include <linux/mm.h>
19#include <linux/crypto.h>
20#include <linux/cryptohash.h>
21#include <linux/types.h>
22#include <asm/byteorder.h>
23
24#include "ripemd.h"
25
26struct rmd320_ctx {
27 u64 byte_count;
28 u32 state[10];
29 __le32 buffer[16];
30};
31
32#define K1 RMD_K1
33#define K2 RMD_K2
34#define K3 RMD_K3
35#define K4 RMD_K4
36#define K5 RMD_K5
37#define KK1 RMD_K6
38#define KK2 RMD_K7
39#define KK3 RMD_K8
40#define KK4 RMD_K9
41#define KK5 RMD_K1
42
43#define F1(x, y, z) (x ^ y ^ z) /* XOR */
44#define F2(x, y, z) (z ^ (x & (y ^ z))) /* x ? y : z */
45#define F3(x, y, z) ((x | ~y) ^ z)
46#define F4(x, y, z) (y ^ (z & (x ^ y))) /* z ? x : y */
47#define F5(x, y, z) (x ^ (y | ~z))
48
49#define ROUND(a, b, c, d, e, f, k, x, s) { \
50 (a) += f((b), (c), (d)) + le32_to_cpup(&(x)) + (k); \
51 (a) = rol32((a), (s)) + (e); \
52 (c) = rol32((c), 10); \
53}
54
55static void rmd320_transform(u32 *state, const __le32 *in)
56{
57 u32 aa, bb, cc, dd, ee, aaa, bbb, ccc, ddd, eee, tmp;
58
59 /* Initialize left lane */
60 aa = state[0];
61 bb = state[1];
62 cc = state[2];
63 dd = state[3];
64 ee = state[4];
65
66 /* Initialize right lane */
67 aaa = state[5];
68 bbb = state[6];
69 ccc = state[7];
70 ddd = state[8];
71 eee = state[9];
72
73 /* round 1: left lane */
74 ROUND(aa, bb, cc, dd, ee, F1, K1, in[0], 11);
75 ROUND(ee, aa, bb, cc, dd, F1, K1, in[1], 14);
76 ROUND(dd, ee, aa, bb, cc, F1, K1, in[2], 15);
77 ROUND(cc, dd, ee, aa, bb, F1, K1, in[3], 12);
78 ROUND(bb, cc, dd, ee, aa, F1, K1, in[4], 5);
79 ROUND(aa, bb, cc, dd, ee, F1, K1, in[5], 8);
80 ROUND(ee, aa, bb, cc, dd, F1, K1, in[6], 7);
81 ROUND(dd, ee, aa, bb, cc, F1, K1, in[7], 9);
82 ROUND(cc, dd, ee, aa, bb, F1, K1, in[8], 11);
83 ROUND(bb, cc, dd, ee, aa, F1, K1, in[9], 13);
84 ROUND(aa, bb, cc, dd, ee, F1, K1, in[10], 14);
85 ROUND(ee, aa, bb, cc, dd, F1, K1, in[11], 15);
86 ROUND(dd, ee, aa, bb, cc, F1, K1, in[12], 6);
87 ROUND(cc, dd, ee, aa, bb, F1, K1, in[13], 7);
88 ROUND(bb, cc, dd, ee, aa, F1, K1, in[14], 9);
89 ROUND(aa, bb, cc, dd, ee, F1, K1, in[15], 8);
90
91 /* round 1: right lane */
92 ROUND(aaa, bbb, ccc, ddd, eee, F5, KK1, in[5], 8);
93 ROUND(eee, aaa, bbb, ccc, ddd, F5, KK1, in[14], 9);
94 ROUND(ddd, eee, aaa, bbb, ccc, F5, KK1, in[7], 9);
95 ROUND(ccc, ddd, eee, aaa, bbb, F5, KK1, in[0], 11);
96 ROUND(bbb, ccc, ddd, eee, aaa, F5, KK1, in[9], 13);
97 ROUND(aaa, bbb, ccc, ddd, eee, F5, KK1, in[2], 15);
98 ROUND(eee, aaa, bbb, ccc, ddd, F5, KK1, in[11], 15);
99 ROUND(ddd, eee, aaa, bbb, ccc, F5, KK1, in[4], 5);
100 ROUND(ccc, ddd, eee, aaa, bbb, F5, KK1, in[13], 7);
101 ROUND(bbb, ccc, ddd, eee, aaa, F5, KK1, in[6], 7);
102 ROUND(aaa, bbb, ccc, ddd, eee, F5, KK1, in[15], 8);
103 ROUND(eee, aaa, bbb, ccc, ddd, F5, KK1, in[8], 11);
104 ROUND(ddd, eee, aaa, bbb, ccc, F5, KK1, in[1], 14);
105 ROUND(ccc, ddd, eee, aaa, bbb, F5, KK1, in[10], 14);
106 ROUND(bbb, ccc, ddd, eee, aaa, F5, KK1, in[3], 12);
107 ROUND(aaa, bbb, ccc, ddd, eee, F5, KK1, in[12], 6);
108
109 /* Swap contents of "a" registers */
110 tmp = aa; aa = aaa; aaa = tmp;
111
112 /* round 2: left lane" */
113 ROUND(ee, aa, bb, cc, dd, F2, K2, in[7], 7);
114 ROUND(dd, ee, aa, bb, cc, F2, K2, in[4], 6);
115 ROUND(cc, dd, ee, aa, bb, F2, K2, in[13], 8);
116 ROUND(bb, cc, dd, ee, aa, F2, K2, in[1], 13);
117 ROUND(aa, bb, cc, dd, ee, F2, K2, in[10], 11);
118 ROUND(ee, aa, bb, cc, dd, F2, K2, in[6], 9);
119 ROUND(dd, ee, aa, bb, cc, F2, K2, in[15], 7);
120 ROUND(cc, dd, ee, aa, bb, F2, K2, in[3], 15);
121 ROUND(bb, cc, dd, ee, aa, F2, K2, in[12], 7);
122 ROUND(aa, bb, cc, dd, ee, F2, K2, in[0], 12);
123 ROUND(ee, aa, bb, cc, dd, F2, K2, in[9], 15);
124 ROUND(dd, ee, aa, bb, cc, F2, K2, in[5], 9);
125 ROUND(cc, dd, ee, aa, bb, F2, K2, in[2], 11);
126 ROUND(bb, cc, dd, ee, aa, F2, K2, in[14], 7);
127 ROUND(aa, bb, cc, dd, ee, F2, K2, in[11], 13);
128 ROUND(ee, aa, bb, cc, dd, F2, K2, in[8], 12);
129
130 /* round 2: right lane */
131 ROUND(eee, aaa, bbb, ccc, ddd, F4, KK2, in[6], 9);
132 ROUND(ddd, eee, aaa, bbb, ccc, F4, KK2, in[11], 13);
133 ROUND(ccc, ddd, eee, aaa, bbb, F4, KK2, in[3], 15);
134 ROUND(bbb, ccc, ddd, eee, aaa, F4, KK2, in[7], 7);
135 ROUND(aaa, bbb, ccc, ddd, eee, F4, KK2, in[0], 12);
136 ROUND(eee, aaa, bbb, ccc, ddd, F4, KK2, in[13], 8);
137 ROUND(ddd, eee, aaa, bbb, ccc, F4, KK2, in[5], 9);
138 ROUND(ccc, ddd, eee, aaa, bbb, F4, KK2, in[10], 11);
139 ROUND(bbb, ccc, ddd, eee, aaa, F4, KK2, in[14], 7);
140 ROUND(aaa, bbb, ccc, ddd, eee, F4, KK2, in[15], 7);
141 ROUND(eee, aaa, bbb, ccc, ddd, F4, KK2, in[8], 12);
142 ROUND(ddd, eee, aaa, bbb, ccc, F4, KK2, in[12], 7);
143 ROUND(ccc, ddd, eee, aaa, bbb, F4, KK2, in[4], 6);
144 ROUND(bbb, ccc, ddd, eee, aaa, F4, KK2, in[9], 15);
145 ROUND(aaa, bbb, ccc, ddd, eee, F4, KK2, in[1], 13);
146 ROUND(eee, aaa, bbb, ccc, ddd, F4, KK2, in[2], 11);
147
148 /* Swap contents of "b" registers */
149 tmp = bb; bb = bbb; bbb = tmp;
150
151 /* round 3: left lane" */
152 ROUND(dd, ee, aa, bb, cc, F3, K3, in[3], 11);
153 ROUND(cc, dd, ee, aa, bb, F3, K3, in[10], 13);
154 ROUND(bb, cc, dd, ee, aa, F3, K3, in[14], 6);
155 ROUND(aa, bb, cc, dd, ee, F3, K3, in[4], 7);
156 ROUND(ee, aa, bb, cc, dd, F3, K3, in[9], 14);
157 ROUND(dd, ee, aa, bb, cc, F3, K3, in[15], 9);
158 ROUND(cc, dd, ee, aa, bb, F3, K3, in[8], 13);
159 ROUND(bb, cc, dd, ee, aa, F3, K3, in[1], 15);
160 ROUND(aa, bb, cc, dd, ee, F3, K3, in[2], 14);
161 ROUND(ee, aa, bb, cc, dd, F3, K3, in[7], 8);
162 ROUND(dd, ee, aa, bb, cc, F3, K3, in[0], 13);
163 ROUND(cc, dd, ee, aa, bb, F3, K3, in[6], 6);
164 ROUND(bb, cc, dd, ee, aa, F3, K3, in[13], 5);
165 ROUND(aa, bb, cc, dd, ee, F3, K3, in[11], 12);
166 ROUND(ee, aa, bb, cc, dd, F3, K3, in[5], 7);
167 ROUND(dd, ee, aa, bb, cc, F3, K3, in[12], 5);
168
169 /* round 3: right lane */
170 ROUND(ddd, eee, aaa, bbb, ccc, F3, KK3, in[15], 9);
171 ROUND(ccc, ddd, eee, aaa, bbb, F3, KK3, in[5], 7);
172 ROUND(bbb, ccc, ddd, eee, aaa, F3, KK3, in[1], 15);
173 ROUND(aaa, bbb, ccc, ddd, eee, F3, KK3, in[3], 11);
174 ROUND(eee, aaa, bbb, ccc, ddd, F3, KK3, in[7], 8);
175 ROUND(ddd, eee, aaa, bbb, ccc, F3, KK3, in[14], 6);
176 ROUND(ccc, ddd, eee, aaa, bbb, F3, KK3, in[6], 6);
177 ROUND(bbb, ccc, ddd, eee, aaa, F3, KK3, in[9], 14);
178 ROUND(aaa, bbb, ccc, ddd, eee, F3, KK3, in[11], 12);
179 ROUND(eee, aaa, bbb, ccc, ddd, F3, KK3, in[8], 13);
180 ROUND(ddd, eee, aaa, bbb, ccc, F3, KK3, in[12], 5);
181 ROUND(ccc, ddd, eee, aaa, bbb, F3, KK3, in[2], 14);
182 ROUND(bbb, ccc, ddd, eee, aaa, F3, KK3, in[10], 13);
183 ROUND(aaa, bbb, ccc, ddd, eee, F3, KK3, in[0], 13);
184 ROUND(eee, aaa, bbb, ccc, ddd, F3, KK3, in[4], 7);
185 ROUND(ddd, eee, aaa, bbb, ccc, F3, KK3, in[13], 5);
186
187 /* Swap contents of "c" registers */
188 tmp = cc; cc = ccc; ccc = tmp;
189
190 /* round 4: left lane" */
191 ROUND(cc, dd, ee, aa, bb, F4, K4, in[1], 11);
192 ROUND(bb, cc, dd, ee, aa, F4, K4, in[9], 12);
193 ROUND(aa, bb, cc, dd, ee, F4, K4, in[11], 14);
194 ROUND(ee, aa, bb, cc, dd, F4, K4, in[10], 15);
195 ROUND(dd, ee, aa, bb, cc, F4, K4, in[0], 14);
196 ROUND(cc, dd, ee, aa, bb, F4, K4, in[8], 15);
197 ROUND(bb, cc, dd, ee, aa, F4, K4, in[12], 9);
198 ROUND(aa, bb, cc, dd, ee, F4, K4, in[4], 8);
199 ROUND(ee, aa, bb, cc, dd, F4, K4, in[13], 9);
200 ROUND(dd, ee, aa, bb, cc, F4, K4, in[3], 14);
201 ROUND(cc, dd, ee, aa, bb, F4, K4, in[7], 5);
202 ROUND(bb, cc, dd, ee, aa, F4, K4, in[15], 6);
203 ROUND(aa, bb, cc, dd, ee, F4, K4, in[14], 8);
204 ROUND(ee, aa, bb, cc, dd, F4, K4, in[5], 6);
205 ROUND(dd, ee, aa, bb, cc, F4, K4, in[6], 5);
206 ROUND(cc, dd, ee, aa, bb, F4, K4, in[2], 12);
207
208 /* round 4: right lane */
209 ROUND(ccc, ddd, eee, aaa, bbb, F2, KK4, in[8], 15);
210 ROUND(bbb, ccc, ddd, eee, aaa, F2, KK4, in[6], 5);
211 ROUND(aaa, bbb, ccc, ddd, eee, F2, KK4, in[4], 8);
212 ROUND(eee, aaa, bbb, ccc, ddd, F2, KK4, in[1], 11);
213 ROUND(ddd, eee, aaa, bbb, ccc, F2, KK4, in[3], 14);
214 ROUND(ccc, ddd, eee, aaa, bbb, F2, KK4, in[11], 14);
215 ROUND(bbb, ccc, ddd, eee, aaa, F2, KK4, in[15], 6);
216 ROUND(aaa, bbb, ccc, ddd, eee, F2, KK4, in[0], 14);
217 ROUND(eee, aaa, bbb, ccc, ddd, F2, KK4, in[5], 6);
218 ROUND(ddd, eee, aaa, bbb, ccc, F2, KK4, in[12], 9);
219 ROUND(ccc, ddd, eee, aaa, bbb, F2, KK4, in[2], 12);
220 ROUND(bbb, ccc, ddd, eee, aaa, F2, KK4, in[13], 9);
221 ROUND(aaa, bbb, ccc, ddd, eee, F2, KK4, in[9], 12);
222 ROUND(eee, aaa, bbb, ccc, ddd, F2, KK4, in[7], 5);
223 ROUND(ddd, eee, aaa, bbb, ccc, F2, KK4, in[10], 15);
224 ROUND(ccc, ddd, eee, aaa, bbb, F2, KK4, in[14], 8);
225
226 /* Swap contents of "d" registers */
227 tmp = dd; dd = ddd; ddd = tmp;
228
229 /* round 5: left lane" */
230 ROUND(bb, cc, dd, ee, aa, F5, K5, in[4], 9);
231 ROUND(aa, bb, cc, dd, ee, F5, K5, in[0], 15);
232 ROUND(ee, aa, bb, cc, dd, F5, K5, in[5], 5);
233 ROUND(dd, ee, aa, bb, cc, F5, K5, in[9], 11);
234 ROUND(cc, dd, ee, aa, bb, F5, K5, in[7], 6);
235 ROUND(bb, cc, dd, ee, aa, F5, K5, in[12], 8);
236 ROUND(aa, bb, cc, dd, ee, F5, K5, in[2], 13);
237 ROUND(ee, aa, bb, cc, dd, F5, K5, in[10], 12);
238 ROUND(dd, ee, aa, bb, cc, F5, K5, in[14], 5);
239 ROUND(cc, dd, ee, aa, bb, F5, K5, in[1], 12);
240 ROUND(bb, cc, dd, ee, aa, F5, K5, in[3], 13);
241 ROUND(aa, bb, cc, dd, ee, F5, K5, in[8], 14);
242 ROUND(ee, aa, bb, cc, dd, F5, K5, in[11], 11);
243 ROUND(dd, ee, aa, bb, cc, F5, K5, in[6], 8);
244 ROUND(cc, dd, ee, aa, bb, F5, K5, in[15], 5);
245 ROUND(bb, cc, dd, ee, aa, F5, K5, in[13], 6);
246
247 /* round 5: right lane */
248 ROUND(bbb, ccc, ddd, eee, aaa, F1, KK5, in[12], 8);
249 ROUND(aaa, bbb, ccc, ddd, eee, F1, KK5, in[15], 5);
250 ROUND(eee, aaa, bbb, ccc, ddd, F1, KK5, in[10], 12);
251 ROUND(ddd, eee, aaa, bbb, ccc, F1, KK5, in[4], 9);
252 ROUND(ccc, ddd, eee, aaa, bbb, F1, KK5, in[1], 12);
253 ROUND(bbb, ccc, ddd, eee, aaa, F1, KK5, in[5], 5);
254 ROUND(aaa, bbb, ccc, ddd, eee, F1, KK5, in[8], 14);
255 ROUND(eee, aaa, bbb, ccc, ddd, F1, KK5, in[7], 6);
256 ROUND(ddd, eee, aaa, bbb, ccc, F1, KK5, in[6], 8);
257 ROUND(ccc, ddd, eee, aaa, bbb, F1, KK5, in[2], 13);
258 ROUND(bbb, ccc, ddd, eee, aaa, F1, KK5, in[13], 6);
259 ROUND(aaa, bbb, ccc, ddd, eee, F1, KK5, in[14], 5);
260 ROUND(eee, aaa, bbb, ccc, ddd, F1, KK5, in[0], 15);
261 ROUND(ddd, eee, aaa, bbb, ccc, F1, KK5, in[3], 13);
262 ROUND(ccc, ddd, eee, aaa, bbb, F1, KK5, in[9], 11);
263 ROUND(bbb, ccc, ddd, eee, aaa, F1, KK5, in[11], 11);
264
265 /* Swap contents of "e" registers */
266 tmp = ee; ee = eee; eee = tmp;
267
268 /* combine results */
269 state[0] += aa;
270 state[1] += bb;
271 state[2] += cc;
272 state[3] += dd;
273 state[4] += ee;
274 state[5] += aaa;
275 state[6] += bbb;
276 state[7] += ccc;
277 state[8] += ddd;
278 state[9] += eee;
279
280 return;
281}
282
283static void rmd320_init(struct crypto_tfm *tfm)
284{
285 struct rmd320_ctx *rctx = crypto_tfm_ctx(tfm);
286
287 rctx->byte_count = 0;
288
289 rctx->state[0] = RMD_H0;
290 rctx->state[1] = RMD_H1;
291 rctx->state[2] = RMD_H2;
292 rctx->state[3] = RMD_H3;
293 rctx->state[4] = RMD_H4;
294 rctx->state[5] = RMD_H5;
295 rctx->state[6] = RMD_H6;
296 rctx->state[7] = RMD_H7;
297 rctx->state[8] = RMD_H8;
298 rctx->state[9] = RMD_H9;
299
300 memset(rctx->buffer, 0, sizeof(rctx->buffer));
301}
302
303static void rmd320_update(struct crypto_tfm *tfm, const u8 *data,
304 unsigned int len)
305{
306 struct rmd320_ctx *rctx = crypto_tfm_ctx(tfm);
307 const u32 avail = sizeof(rctx->buffer) - (rctx->byte_count & 0x3f);
308
309 rctx->byte_count += len;
310
311 /* Enough space in buffer? If so copy and we're done */
312 if (avail > len) {
313 memcpy((char *)rctx->buffer + (sizeof(rctx->buffer) - avail),
314 data, len);
315 return;
316 }
317
318 memcpy((char *)rctx->buffer + (sizeof(rctx->buffer) - avail),
319 data, avail);
320
321 rmd320_transform(rctx->state, rctx->buffer);
322 data += avail;
323 len -= avail;
324
325 while (len >= sizeof(rctx->buffer)) {
326 memcpy(rctx->buffer, data, sizeof(rctx->buffer));
327 rmd320_transform(rctx->state, rctx->buffer);
328 data += sizeof(rctx->buffer);
329 len -= sizeof(rctx->buffer);
330 }
331
332 memcpy(rctx->buffer, data, len);
333}
334
335/* Add padding and return the message digest. */
336static void rmd320_final(struct crypto_tfm *tfm, u8 *out)
337{
338 struct rmd320_ctx *rctx = crypto_tfm_ctx(tfm);
339 u32 i, index, padlen;
340 __le64 bits;
341 __le32 *dst = (__le32 *)out;
342 static const u8 padding[64] = { 0x80, };
343
344 bits = cpu_to_le64(rctx->byte_count << 3);
345
346 /* Pad out to 56 mod 64 */
347 index = rctx->byte_count & 0x3f;
348 padlen = (index < 56) ? (56 - index) : ((64+56) - index);
349 rmd320_update(tfm, padding, padlen);
350
351 /* Append length */
352 rmd320_update(tfm, (const u8 *)&bits, sizeof(bits));
353
354 /* Store state in digest */
355 for (i = 0; i < 10; i++)
356 dst[i] = cpu_to_le32p(&rctx->state[i]);
357
358 /* Wipe context */
359 memset(rctx, 0, sizeof(*rctx));
360}
361
362static struct crypto_alg alg = {
363 .cra_name = "rmd320",
364 .cra_driver_name = "rmd320",
365 .cra_flags = CRYPTO_ALG_TYPE_DIGEST,
366 .cra_blocksize = RMD320_BLOCK_SIZE,
367 .cra_ctxsize = sizeof(struct rmd320_ctx),
368 .cra_module = THIS_MODULE,
369 .cra_list = LIST_HEAD_INIT(alg.cra_list),
370 .cra_u = { .digest = {
371 .dia_digestsize = RMD320_DIGEST_SIZE,
372 .dia_init = rmd320_init,
373 .dia_update = rmd320_update,
374 .dia_final = rmd320_final } }
375};
376
377static int __init rmd320_mod_init(void)
378{
379 return crypto_register_alg(&alg);
380}
381
382static void __exit rmd320_mod_fini(void)
383{
384 crypto_unregister_alg(&alg);
385}
386
387module_init(rmd320_mod_init);
388module_exit(rmd320_mod_fini);
389
390MODULE_LICENSE("GPL");
391MODULE_DESCRIPTION("RIPEMD-320 Message Digest");
392
393MODULE_ALIAS("rmd320");
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