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[CRYPTO] tcrypt: Catch cipher destination memory corruption
[GitHub/mt8127/android_kernel_alcatel_ttab.git] / crypto / rmd160.c
CommitLineData
c6580eb8
AKR		 1/*
2 * Cryptographic API.
3 *
4 * RIPEMD-160 - 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 rmd160_ctx {
27 u64 byte_count;
28 u32 state[5];
29 u32 buffer[16];
30};
31
32#define K1 0x00000000UL
33#define K2 0x5a827999UL
34#define K3 0x6ed9eba1UL
35#define K4 0x8f1bbcdcUL
36#define K5 0xa953fd4eUL
37#define KK1 0x50a28be6UL
38#define KK2 0x5c4dd124UL
39#define KK3 0x6d703ef3UL
40#define KK4 0x7a6d76e9UL
41#define KK5 0x00000000UL
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)) + (x) + (k); \
51 (a) = rol32((a), (s)) + (e); \
52 (c) = rol32((c), 10); \
53}
54
55static void rmd160_transform(u32 *state, u32 const *in)
56{
57 u32 aa, bb, cc, dd, ee, aaa, bbb, ccc, ddd, eee;
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[0];
68 bbb = state[1];
69 ccc = state[2];
70 ddd = state[3];
71 eee = state[4];
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 2: left lane" */
92 ROUND(ee, aa, bb, cc, dd, F2, K2, in[7], 7);
93 ROUND(dd, ee, aa, bb, cc, F2, K2, in[4], 6);
94 ROUND(cc, dd, ee, aa, bb, F2, K2, in[13], 8);
95 ROUND(bb, cc, dd, ee, aa, F2, K2, in[1], 13);
96 ROUND(aa, bb, cc, dd, ee, F2, K2, in[10], 11);
97 ROUND(ee, aa, bb, cc, dd, F2, K2, in[6], 9);
98 ROUND(dd, ee, aa, bb, cc, F2, K2, in[15], 7);
99 ROUND(cc, dd, ee, aa, bb, F2, K2, in[3], 15);
100 ROUND(bb, cc, dd, ee, aa, F2, K2, in[12], 7);
101 ROUND(aa, bb, cc, dd, ee, F2, K2, in[0], 12);
102 ROUND(ee, aa, bb, cc, dd, F2, K2, in[9], 15);
103 ROUND(dd, ee, aa, bb, cc, F2, K2, in[5], 9);
104 ROUND(cc, dd, ee, aa, bb, F2, K2, in[2], 11);
105 ROUND(bb, cc, dd, ee, aa, F2, K2, in[14], 7);
106 ROUND(aa, bb, cc, dd, ee, F2, K2, in[11], 13);
107 ROUND(ee, aa, bb, cc, dd, F2, K2, in[8], 12);
108
109 /* round 3: left lane" */
110 ROUND(dd, ee, aa, bb, cc, F3, K3, in[3], 11);
111 ROUND(cc, dd, ee, aa, bb, F3, K3, in[10], 13);
112 ROUND(bb, cc, dd, ee, aa, F3, K3, in[14], 6);
113 ROUND(aa, bb, cc, dd, ee, F3, K3, in[4], 7);
114 ROUND(ee, aa, bb, cc, dd, F3, K3, in[9], 14);
115 ROUND(dd, ee, aa, bb, cc, F3, K3, in[15], 9);
116 ROUND(cc, dd, ee, aa, bb, F3, K3, in[8], 13);
117 ROUND(bb, cc, dd, ee, aa, F3, K3, in[1], 15);
118 ROUND(aa, bb, cc, dd, ee, F3, K3, in[2], 14);
119 ROUND(ee, aa, bb, cc, dd, F3, K3, in[7], 8);
120 ROUND(dd, ee, aa, bb, cc, F3, K3, in[0], 13);
121 ROUND(cc, dd, ee, aa, bb, F3, K3, in[6], 6);
122 ROUND(bb, cc, dd, ee, aa, F3, K3, in[13], 5);
123 ROUND(aa, bb, cc, dd, ee, F3, K3, in[11], 12);
124 ROUND(ee, aa, bb, cc, dd, F3, K3, in[5], 7);
125 ROUND(dd, ee, aa, bb, cc, F3, K3, in[12], 5);
126
127 /* round 4: left lane" */
128 ROUND(cc, dd, ee, aa, bb, F4, K4, in[1], 11);
129 ROUND(bb, cc, dd, ee, aa, F4, K4, in[9], 12);
130 ROUND(aa, bb, cc, dd, ee, F4, K4, in[11], 14);
131 ROUND(ee, aa, bb, cc, dd, F4, K4, in[10], 15);
132 ROUND(dd, ee, aa, bb, cc, F4, K4, in[0], 14);
133 ROUND(cc, dd, ee, aa, bb, F4, K4, in[8], 15);
134 ROUND(bb, cc, dd, ee, aa, F4, K4, in[12], 9);
135 ROUND(aa, bb, cc, dd, ee, F4, K4, in[4], 8);
136 ROUND(ee, aa, bb, cc, dd, F4, K4, in[13], 9);
137 ROUND(dd, ee, aa, bb, cc, F4, K4, in[3], 14);
138 ROUND(cc, dd, ee, aa, bb, F4, K4, in[7], 5);
139 ROUND(bb, cc, dd, ee, aa, F4, K4, in[15], 6);
140 ROUND(aa, bb, cc, dd, ee, F4, K4, in[14], 8);
141 ROUND(ee, aa, bb, cc, dd, F4, K4, in[5], 6);
142 ROUND(dd, ee, aa, bb, cc, F4, K4, in[6], 5);
143 ROUND(cc, dd, ee, aa, bb, F4, K4, in[2], 12);
144
145 /* round 5: left lane" */
146 ROUND(bb, cc, dd, ee, aa, F5, K5, in[4], 9);
147 ROUND(aa, bb, cc, dd, ee, F5, K5, in[0], 15);
148 ROUND(ee, aa, bb, cc, dd, F5, K5, in[5], 5);
149 ROUND(dd, ee, aa, bb, cc, F5, K5, in[9], 11);
150 ROUND(cc, dd, ee, aa, bb, F5, K5, in[7], 6);
151 ROUND(bb, cc, dd, ee, aa, F5, K5, in[12], 8);
152 ROUND(aa, bb, cc, dd, ee, F5, K5, in[2], 13);
153 ROUND(ee, aa, bb, cc, dd, F5, K5, in[10], 12);
154 ROUND(dd, ee, aa, bb, cc, F5, K5, in[14], 5);
155 ROUND(cc, dd, ee, aa, bb, F5, K5, in[1], 12);
156 ROUND(bb, cc, dd, ee, aa, F5, K5, in[3], 13);
157 ROUND(aa, bb, cc, dd, ee, F5, K5, in[8], 14);
158 ROUND(ee, aa, bb, cc, dd, F5, K5, in[11], 11);
159 ROUND(dd, ee, aa, bb, cc, F5, K5, in[6], 8);
160 ROUND(cc, dd, ee, aa, bb, F5, K5, in[15], 5);
161 ROUND(bb, cc, dd, ee, aa, F5, K5, in[13], 6);
162
163 /* round 1: right lane */
164 ROUND(aaa, bbb, ccc, ddd, eee, F5, KK1, in[5], 8);
165 ROUND(eee, aaa, bbb, ccc, ddd, F5, KK1, in[14], 9);
166 ROUND(ddd, eee, aaa, bbb, ccc, F5, KK1, in[7], 9);
167 ROUND(ccc, ddd, eee, aaa, bbb, F5, KK1, in[0], 11);
168 ROUND(bbb, ccc, ddd, eee, aaa, F5, KK1, in[9], 13);
169 ROUND(aaa, bbb, ccc, ddd, eee, F5, KK1, in[2], 15);
170 ROUND(eee, aaa, bbb, ccc, ddd, F5, KK1, in[11], 15);
171 ROUND(ddd, eee, aaa, bbb, ccc, F5, KK1, in[4], 5);
172 ROUND(ccc, ddd, eee, aaa, bbb, F5, KK1, in[13], 7);
173 ROUND(bbb, ccc, ddd, eee, aaa, F5, KK1, in[6], 7);
174 ROUND(aaa, bbb, ccc, ddd, eee, F5, KK1, in[15], 8);
175 ROUND(eee, aaa, bbb, ccc, ddd, F5, KK1, in[8], 11);
176 ROUND(ddd, eee, aaa, bbb, ccc, F5, KK1, in[1], 14);
177 ROUND(ccc, ddd, eee, aaa, bbb, F5, KK1, in[10], 14);
178 ROUND(bbb, ccc, ddd, eee, aaa, F5, KK1, in[3], 12);
179 ROUND(aaa, bbb, ccc, ddd, eee, F5, KK1, in[12], 6);
180
181 /* round 2: right lane */
182 ROUND(eee, aaa, bbb, ccc, ddd, F4, KK2, in[6], 9);
183 ROUND(ddd, eee, aaa, bbb, ccc, F4, KK2, in[11], 13);
184 ROUND(ccc, ddd, eee, aaa, bbb, F4, KK2, in[3], 15);
185 ROUND(bbb, ccc, ddd, eee, aaa, F4, KK2, in[7], 7);
186 ROUND(aaa, bbb, ccc, ddd, eee, F4, KK2, in[0], 12);
187 ROUND(eee, aaa, bbb, ccc, ddd, F4, KK2, in[13], 8);
188 ROUND(ddd, eee, aaa, bbb, ccc, F4, KK2, in[5], 9);
189 ROUND(ccc, ddd, eee, aaa, bbb, F4, KK2, in[10], 11);
190 ROUND(bbb, ccc, ddd, eee, aaa, F4, KK2, in[14], 7);
191 ROUND(aaa, bbb, ccc, ddd, eee, F4, KK2, in[15], 7);
192 ROUND(eee, aaa, bbb, ccc, ddd, F4, KK2, in[8], 12);
193 ROUND(ddd, eee, aaa, bbb, ccc, F4, KK2, in[12], 7);
194 ROUND(ccc, ddd, eee, aaa, bbb, F4, KK2, in[4], 6);
195 ROUND(bbb, ccc, ddd, eee, aaa, F4, KK2, in[9], 15);
196 ROUND(aaa, bbb, ccc, ddd, eee, F4, KK2, in[1], 13);
197 ROUND(eee, aaa, bbb, ccc, ddd, F4, KK2, in[2], 11);
198
199 /* round 3: right lane */
200 ROUND(ddd, eee, aaa, bbb, ccc, F3, KK3, in[15], 9);
201 ROUND(ccc, ddd, eee, aaa, bbb, F3, KK3, in[5], 7);
202 ROUND(bbb, ccc, ddd, eee, aaa, F3, KK3, in[1], 15);
203 ROUND(aaa, bbb, ccc, ddd, eee, F3, KK3, in[3], 11);
204 ROUND(eee, aaa, bbb, ccc, ddd, F3, KK3, in[7], 8);
205 ROUND(ddd, eee, aaa, bbb, ccc, F3, KK3, in[14], 6);
206 ROUND(ccc, ddd, eee, aaa, bbb, F3, KK3, in[6], 6);
207 ROUND(bbb, ccc, ddd, eee, aaa, F3, KK3, in[9], 14);
208 ROUND(aaa, bbb, ccc, ddd, eee, F3, KK3, in[11], 12);
209 ROUND(eee, aaa, bbb, ccc, ddd, F3, KK3, in[8], 13);
210 ROUND(ddd, eee, aaa, bbb, ccc, F3, KK3, in[12], 5);
211 ROUND(ccc, ddd, eee, aaa, bbb, F3, KK3, in[2], 14);
212 ROUND(bbb, ccc, ddd, eee, aaa, F3, KK3, in[10], 13);
213 ROUND(aaa, bbb, ccc, ddd, eee, F3, KK3, in[0], 13);
214 ROUND(eee, aaa, bbb, ccc, ddd, F3, KK3, in[4], 7);
215 ROUND(ddd, eee, aaa, bbb, ccc, F3, KK3, in[13], 5);
216
217 /* round 4: right lane */
218 ROUND(ccc, ddd, eee, aaa, bbb, F2, KK4, in[8], 15);
219 ROUND(bbb, ccc, ddd, eee, aaa, F2, KK4, in[6], 5);
220 ROUND(aaa, bbb, ccc, ddd, eee, F2, KK4, in[4], 8);
221 ROUND(eee, aaa, bbb, ccc, ddd, F2, KK4, in[1], 11);
222 ROUND(ddd, eee, aaa, bbb, ccc, F2, KK4, in[3], 14);
223 ROUND(ccc, ddd, eee, aaa, bbb, F2, KK4, in[11], 14);
224 ROUND(bbb, ccc, ddd, eee, aaa, F2, KK4, in[15], 6);
225 ROUND(aaa, bbb, ccc, ddd, eee, F2, KK4, in[0], 14);
226 ROUND(eee, aaa, bbb, ccc, ddd, F2, KK4, in[5], 6);
227 ROUND(ddd, eee, aaa, bbb, ccc, F2, KK4, in[12], 9);
228 ROUND(ccc, ddd, eee, aaa, bbb, F2, KK4, in[2], 12);
229 ROUND(bbb, ccc, ddd, eee, aaa, F2, KK4, in[13], 9);
230 ROUND(aaa, bbb, ccc, ddd, eee, F2, KK4, in[9], 12);
231 ROUND(eee, aaa, bbb, ccc, ddd, F2, KK4, in[7], 5);
232 ROUND(ddd, eee, aaa, bbb, ccc, F2, KK4, in[10], 15);
233 ROUND(ccc, ddd, eee, aaa, bbb, F2, KK4, in[14], 8);
234
235 /* round 5: right lane */
236 ROUND(bbb, ccc, ddd, eee, aaa, F1, KK5, in[12], 8);
237 ROUND(aaa, bbb, ccc, ddd, eee, F1, KK5, in[15], 5);
238 ROUND(eee, aaa, bbb, ccc, ddd, F1, KK5, in[10], 12);
239 ROUND(ddd, eee, aaa, bbb, ccc, F1, KK5, in[4], 9);
240 ROUND(ccc, ddd, eee, aaa, bbb, F1, KK5, in[1], 12);
241 ROUND(bbb, ccc, ddd, eee, aaa, F1, KK5, in[5], 5);
242 ROUND(aaa, bbb, ccc, ddd, eee, F1, KK5, in[8], 14);
243 ROUND(eee, aaa, bbb, ccc, ddd, F1, KK5, in[7], 6);
244 ROUND(ddd, eee, aaa, bbb, ccc, F1, KK5, in[6], 8);
245 ROUND(ccc, ddd, eee, aaa, bbb, F1, KK5, in[2], 13);
246 ROUND(bbb, ccc, ddd, eee, aaa, F1, KK5, in[13], 6);
247 ROUND(aaa, bbb, ccc, ddd, eee, F1, KK5, in[14], 5);
248 ROUND(eee, aaa, bbb, ccc, ddd, F1, KK5, in[0], 15);
249 ROUND(ddd, eee, aaa, bbb, ccc, F1, KK5, in[3], 13);
250 ROUND(ccc, ddd, eee, aaa, bbb, F1, KK5, in[9], 11);
251 ROUND(bbb, ccc, ddd, eee, aaa, F1, KK5, in[11], 11);
252
253 /* combine results */
254 ddd += cc + state[1]; /* final result for state[0] */
255 state[1] = state[2] + dd + eee;
256 state[2] = state[3] + ee + aaa;
257 state[3] = state[4] + aa + bbb;
258 state[4] = state[0] + bb + ccc;
259 state[0] = ddd;
260
261 return;
262}
263
264static inline void le32_to_cpu_array(u32 *buf, unsigned int words)
265{
266 while (words--) {
267 le32_to_cpus(buf);
268 buf++;
269 }
270}
271
272static inline void cpu_to_le32_array(u32 *buf, unsigned int words)
273{
274 while (words--) {
275 cpu_to_le32s(buf);
276 buf++;
277 }
278}
279
280static inline void rmd160_transform_helper(struct rmd160_ctx *ctx)
281{
282 le32_to_cpu_array(ctx->buffer, sizeof(ctx->buffer) / sizeof(u32));
283 rmd160_transform(ctx->state, ctx->buffer);
284}
285
286static void rmd160_init(struct crypto_tfm *tfm)
287{
288 struct rmd160_ctx *rctx = crypto_tfm_ctx(tfm);
289
290 rctx->byte_count = 0;
291
292 rctx->state[0] = RMD_H0;
293 rctx->state[1] = RMD_H1;
294 rctx->state[2] = RMD_H2;
295 rctx->state[3] = RMD_H3;
296 rctx->state[4] = RMD_H4;
297
298 memset(rctx->buffer, 0, sizeof(rctx->buffer));
299}
300
301static void rmd160_update(struct crypto_tfm *tfm, const u8 *data,
302 unsigned int len)
303{
304 struct rmd160_ctx *rctx = crypto_tfm_ctx(tfm);
305 const u32 avail = sizeof(rctx->buffer) - (rctx->byte_count & 0x3f);
306
307 rctx->byte_count += len;
308
309 /* Enough space in buffer? If so copy and we're done */
310 if (avail > len) {
311 memcpy((char *)rctx->buffer + (sizeof(rctx->buffer) - avail),
312 data, len);
313 return;
314 }
315
316 memcpy((char *)rctx->buffer + (sizeof(rctx->buffer) - avail),
317 data, avail);
318
319 rmd160_transform_helper(rctx);
320 data += avail;
321 len -= avail;
322
323 while (len >= sizeof(rctx->buffer)) {
324 memcpy(rctx->buffer, data, sizeof(rctx->buffer));
325 rmd160_transform_helper(rctx);
326 data += sizeof(rctx->buffer);
327 len -= sizeof(rctx->buffer);
328 }
329
330 memcpy(rctx->buffer, data, len);
331}
332
333/* Add padding and return the message digest. */
334static void rmd160_final(struct crypto_tfm *tfm, u8 *out)
335{
336 struct rmd160_ctx *rctx = crypto_tfm_ctx(tfm);
337 u32 index, padlen;
338 u64 bits;
339 static const u8 padding[64] = { 0x80, };
340 bits = rctx->byte_count << 3;
341
342 /* Pad out to 56 mod 64 */
343 index = rctx->byte_count & 0x3f;
344 padlen = (index < 56) ? (56 - index) : ((64+56) - index);
345 rmd160_update(tfm, padding, padlen);
346
347 /* Append length */
348 rmd160_update(tfm, (const u8 *)&bits, sizeof(bits));
349
350 /* Store state in digest */
351 memcpy(out, rctx->state, sizeof(rctx->state));
352
353 /* Wipe context */
354 memset(rctx, 0, sizeof(*rctx));
355}
356
357static struct crypto_alg alg = {
358 .cra_name = "rmd160",
359 .cra_driver_name = "rmd160",
360 .cra_flags = CRYPTO_ALG_TYPE_DIGEST,
361 .cra_blocksize = RMD160_BLOCK_SIZE,
362 .cra_ctxsize = sizeof(struct rmd160_ctx),
363 .cra_module = THIS_MODULE,
364 .cra_list = LIST_HEAD_INIT(alg.cra_list),
365 .cra_u = { .digest = {
366 .dia_digestsize = RMD160_DIGEST_SIZE,
367 .dia_init = rmd160_init,
368 .dia_update = rmd160_update,
369 .dia_final = rmd160_final } }
370};
371
372static int __init rmd160_mod_init(void)
373{
374 return crypto_register_alg(&alg);
375}
376
377static void __exit rmd160_mod_fini(void)
378{
379 crypto_unregister_alg(&alg);
380}
381
382module_init(rmd160_mod_init);
383module_exit(rmd160_mod_fini);
384
385MODULE_LICENSE("GPL");
386MODULE_DESCRIPTION("RIPEMD-160 Message Digest");
387
388MODULE_ALIAS("rmd160");
kernel source for telekom puls (alcatel/mediatek)