4 * RIPEMD-160 - RACE Integrity Primitives Evaluation Message Digest.
6 * Based on the reference implementation by Antoon Bosselaers, ESAT-COSIC
8 * Copyright (c) 2008 Adrian-Ken Rueegsegger <rueegsegger (at) swiss-it.ch>
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)
16 #include <crypto/internal/hash.h>
17 #include <linux/init.h>
18 #include <linux/module.h>
20 #include <linux/types.h>
21 #include <asm/byteorder.h>
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))
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); \
54 static void rmd160_transform(u32
*state
, const __le32
*in
)
56 u32 aa
, bb
, cc
, dd
, ee
, aaa
, bbb
, ccc
, ddd
, eee
;
58 /* Initialize left lane */
65 /* Initialize right lane */
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);
90 /* round 2: left lane" */
91 ROUND(ee
, aa
, bb
, cc
, dd
, F2
, K2
, in
[7], 7);
92 ROUND(dd
, ee
, aa
, bb
, cc
, F2
, K2
, in
[4], 6);
93 ROUND(cc
, dd
, ee
, aa
, bb
, F2
, K2
, in
[13], 8);
94 ROUND(bb
, cc
, dd
, ee
, aa
, F2
, K2
, in
[1], 13);
95 ROUND(aa
, bb
, cc
, dd
, ee
, F2
, K2
, in
[10], 11);
96 ROUND(ee
, aa
, bb
, cc
, dd
, F2
, K2
, in
[6], 9);
97 ROUND(dd
, ee
, aa
, bb
, cc
, F2
, K2
, in
[15], 7);
98 ROUND(cc
, dd
, ee
, aa
, bb
, F2
, K2
, in
[3], 15);
99 ROUND(bb
, cc
, dd
, ee
, aa
, F2
, K2
, in
[12], 7);
100 ROUND(aa
, bb
, cc
, dd
, ee
, F2
, K2
, in
[0], 12);
101 ROUND(ee
, aa
, bb
, cc
, dd
, F2
, K2
, in
[9], 15);
102 ROUND(dd
, ee
, aa
, bb
, cc
, F2
, K2
, in
[5], 9);
103 ROUND(cc
, dd
, ee
, aa
, bb
, F2
, K2
, in
[2], 11);
104 ROUND(bb
, cc
, dd
, ee
, aa
, F2
, K2
, in
[14], 7);
105 ROUND(aa
, bb
, cc
, dd
, ee
, F2
, K2
, in
[11], 13);
106 ROUND(ee
, aa
, bb
, cc
, dd
, F2
, K2
, in
[8], 12);
108 /* round 3: left lane" */
109 ROUND(dd
, ee
, aa
, bb
, cc
, F3
, K3
, in
[3], 11);
110 ROUND(cc
, dd
, ee
, aa
, bb
, F3
, K3
, in
[10], 13);
111 ROUND(bb
, cc
, dd
, ee
, aa
, F3
, K3
, in
[14], 6);
112 ROUND(aa
, bb
, cc
, dd
, ee
, F3
, K3
, in
[4], 7);
113 ROUND(ee
, aa
, bb
, cc
, dd
, F3
, K3
, in
[9], 14);
114 ROUND(dd
, ee
, aa
, bb
, cc
, F3
, K3
, in
[15], 9);
115 ROUND(cc
, dd
, ee
, aa
, bb
, F3
, K3
, in
[8], 13);
116 ROUND(bb
, cc
, dd
, ee
, aa
, F3
, K3
, in
[1], 15);
117 ROUND(aa
, bb
, cc
, dd
, ee
, F3
, K3
, in
[2], 14);
118 ROUND(ee
, aa
, bb
, cc
, dd
, F3
, K3
, in
[7], 8);
119 ROUND(dd
, ee
, aa
, bb
, cc
, F3
, K3
, in
[0], 13);
120 ROUND(cc
, dd
, ee
, aa
, bb
, F3
, K3
, in
[6], 6);
121 ROUND(bb
, cc
, dd
, ee
, aa
, F3
, K3
, in
[13], 5);
122 ROUND(aa
, bb
, cc
, dd
, ee
, F3
, K3
, in
[11], 12);
123 ROUND(ee
, aa
, bb
, cc
, dd
, F3
, K3
, in
[5], 7);
124 ROUND(dd
, ee
, aa
, bb
, cc
, F3
, K3
, in
[12], 5);
126 /* round 4: left lane" */
127 ROUND(cc
, dd
, ee
, aa
, bb
, F4
, K4
, in
[1], 11);
128 ROUND(bb
, cc
, dd
, ee
, aa
, F4
, K4
, in
[9], 12);
129 ROUND(aa
, bb
, cc
, dd
, ee
, F4
, K4
, in
[11], 14);
130 ROUND(ee
, aa
, bb
, cc
, dd
, F4
, K4
, in
[10], 15);
131 ROUND(dd
, ee
, aa
, bb
, cc
, F4
, K4
, in
[0], 14);
132 ROUND(cc
, dd
, ee
, aa
, bb
, F4
, K4
, in
[8], 15);
133 ROUND(bb
, cc
, dd
, ee
, aa
, F4
, K4
, in
[12], 9);
134 ROUND(aa
, bb
, cc
, dd
, ee
, F4
, K4
, in
[4], 8);
135 ROUND(ee
, aa
, bb
, cc
, dd
, F4
, K4
, in
[13], 9);
136 ROUND(dd
, ee
, aa
, bb
, cc
, F4
, K4
, in
[3], 14);
137 ROUND(cc
, dd
, ee
, aa
, bb
, F4
, K4
, in
[7], 5);
138 ROUND(bb
, cc
, dd
, ee
, aa
, F4
, K4
, in
[15], 6);
139 ROUND(aa
, bb
, cc
, dd
, ee
, F4
, K4
, in
[14], 8);
140 ROUND(ee
, aa
, bb
, cc
, dd
, F4
, K4
, in
[5], 6);
141 ROUND(dd
, ee
, aa
, bb
, cc
, F4
, K4
, in
[6], 5);
142 ROUND(cc
, dd
, ee
, aa
, bb
, F4
, K4
, in
[2], 12);
144 /* round 5: left lane" */
145 ROUND(bb
, cc
, dd
, ee
, aa
, F5
, K5
, in
[4], 9);
146 ROUND(aa
, bb
, cc
, dd
, ee
, F5
, K5
, in
[0], 15);
147 ROUND(ee
, aa
, bb
, cc
, dd
, F5
, K5
, in
[5], 5);
148 ROUND(dd
, ee
, aa
, bb
, cc
, F5
, K5
, in
[9], 11);
149 ROUND(cc
, dd
, ee
, aa
, bb
, F5
, K5
, in
[7], 6);
150 ROUND(bb
, cc
, dd
, ee
, aa
, F5
, K5
, in
[12], 8);
151 ROUND(aa
, bb
, cc
, dd
, ee
, F5
, K5
, in
[2], 13);
152 ROUND(ee
, aa
, bb
, cc
, dd
, F5
, K5
, in
[10], 12);
153 ROUND(dd
, ee
, aa
, bb
, cc
, F5
, K5
, in
[14], 5);
154 ROUND(cc
, dd
, ee
, aa
, bb
, F5
, K5
, in
[1], 12);
155 ROUND(bb
, cc
, dd
, ee
, aa
, F5
, K5
, in
[3], 13);
156 ROUND(aa
, bb
, cc
, dd
, ee
, F5
, K5
, in
[8], 14);
157 ROUND(ee
, aa
, bb
, cc
, dd
, F5
, K5
, in
[11], 11);
158 ROUND(dd
, ee
, aa
, bb
, cc
, F5
, K5
, in
[6], 8);
159 ROUND(cc
, dd
, ee
, aa
, bb
, F5
, K5
, in
[15], 5);
160 ROUND(bb
, cc
, dd
, ee
, aa
, F5
, K5
, in
[13], 6);
162 /* round 1: right lane */
163 ROUND(aaa
, bbb
, ccc
, ddd
, eee
, F5
, KK1
, in
[5], 8);
164 ROUND(eee
, aaa
, bbb
, ccc
, ddd
, F5
, KK1
, in
[14], 9);
165 ROUND(ddd
, eee
, aaa
, bbb
, ccc
, F5
, KK1
, in
[7], 9);
166 ROUND(ccc
, ddd
, eee
, aaa
, bbb
, F5
, KK1
, in
[0], 11);
167 ROUND(bbb
, ccc
, ddd
, eee
, aaa
, F5
, KK1
, in
[9], 13);
168 ROUND(aaa
, bbb
, ccc
, ddd
, eee
, F5
, KK1
, in
[2], 15);
169 ROUND(eee
, aaa
, bbb
, ccc
, ddd
, F5
, KK1
, in
[11], 15);
170 ROUND(ddd
, eee
, aaa
, bbb
, ccc
, F5
, KK1
, in
[4], 5);
171 ROUND(ccc
, ddd
, eee
, aaa
, bbb
, F5
, KK1
, in
[13], 7);
172 ROUND(bbb
, ccc
, ddd
, eee
, aaa
, F5
, KK1
, in
[6], 7);
173 ROUND(aaa
, bbb
, ccc
, ddd
, eee
, F5
, KK1
, in
[15], 8);
174 ROUND(eee
, aaa
, bbb
, ccc
, ddd
, F5
, KK1
, in
[8], 11);
175 ROUND(ddd
, eee
, aaa
, bbb
, ccc
, F5
, KK1
, in
[1], 14);
176 ROUND(ccc
, ddd
, eee
, aaa
, bbb
, F5
, KK1
, in
[10], 14);
177 ROUND(bbb
, ccc
, ddd
, eee
, aaa
, F5
, KK1
, in
[3], 12);
178 ROUND(aaa
, bbb
, ccc
, ddd
, eee
, F5
, KK1
, in
[12], 6);
180 /* round 2: right lane */
181 ROUND(eee
, aaa
, bbb
, ccc
, ddd
, F4
, KK2
, in
[6], 9);
182 ROUND(ddd
, eee
, aaa
, bbb
, ccc
, F4
, KK2
, in
[11], 13);
183 ROUND(ccc
, ddd
, eee
, aaa
, bbb
, F4
, KK2
, in
[3], 15);
184 ROUND(bbb
, ccc
, ddd
, eee
, aaa
, F4
, KK2
, in
[7], 7);
185 ROUND(aaa
, bbb
, ccc
, ddd
, eee
, F4
, KK2
, in
[0], 12);
186 ROUND(eee
, aaa
, bbb
, ccc
, ddd
, F4
, KK2
, in
[13], 8);
187 ROUND(ddd
, eee
, aaa
, bbb
, ccc
, F4
, KK2
, in
[5], 9);
188 ROUND(ccc
, ddd
, eee
, aaa
, bbb
, F4
, KK2
, in
[10], 11);
189 ROUND(bbb
, ccc
, ddd
, eee
, aaa
, F4
, KK2
, in
[14], 7);
190 ROUND(aaa
, bbb
, ccc
, ddd
, eee
, F4
, KK2
, in
[15], 7);
191 ROUND(eee
, aaa
, bbb
, ccc
, ddd
, F4
, KK2
, in
[8], 12);
192 ROUND(ddd
, eee
, aaa
, bbb
, ccc
, F4
, KK2
, in
[12], 7);
193 ROUND(ccc
, ddd
, eee
, aaa
, bbb
, F4
, KK2
, in
[4], 6);
194 ROUND(bbb
, ccc
, ddd
, eee
, aaa
, F4
, KK2
, in
[9], 15);
195 ROUND(aaa
, bbb
, ccc
, ddd
, eee
, F4
, KK2
, in
[1], 13);
196 ROUND(eee
, aaa
, bbb
, ccc
, ddd
, F4
, KK2
, in
[2], 11);
198 /* round 3: right lane */
199 ROUND(ddd
, eee
, aaa
, bbb
, ccc
, F3
, KK3
, in
[15], 9);
200 ROUND(ccc
, ddd
, eee
, aaa
, bbb
, F3
, KK3
, in
[5], 7);
201 ROUND(bbb
, ccc
, ddd
, eee
, aaa
, F3
, KK3
, in
[1], 15);
202 ROUND(aaa
, bbb
, ccc
, ddd
, eee
, F3
, KK3
, in
[3], 11);
203 ROUND(eee
, aaa
, bbb
, ccc
, ddd
, F3
, KK3
, in
[7], 8);
204 ROUND(ddd
, eee
, aaa
, bbb
, ccc
, F3
, KK3
, in
[14], 6);
205 ROUND(ccc
, ddd
, eee
, aaa
, bbb
, F3
, KK3
, in
[6], 6);
206 ROUND(bbb
, ccc
, ddd
, eee
, aaa
, F3
, KK3
, in
[9], 14);
207 ROUND(aaa
, bbb
, ccc
, ddd
, eee
, F3
, KK3
, in
[11], 12);
208 ROUND(eee
, aaa
, bbb
, ccc
, ddd
, F3
, KK3
, in
[8], 13);
209 ROUND(ddd
, eee
, aaa
, bbb
, ccc
, F3
, KK3
, in
[12], 5);
210 ROUND(ccc
, ddd
, eee
, aaa
, bbb
, F3
, KK3
, in
[2], 14);
211 ROUND(bbb
, ccc
, ddd
, eee
, aaa
, F3
, KK3
, in
[10], 13);
212 ROUND(aaa
, bbb
, ccc
, ddd
, eee
, F3
, KK3
, in
[0], 13);
213 ROUND(eee
, aaa
, bbb
, ccc
, ddd
, F3
, KK3
, in
[4], 7);
214 ROUND(ddd
, eee
, aaa
, bbb
, ccc
, F3
, KK3
, in
[13], 5);
216 /* round 4: right lane */
217 ROUND(ccc
, ddd
, eee
, aaa
, bbb
, F2
, KK4
, in
[8], 15);
218 ROUND(bbb
, ccc
, ddd
, eee
, aaa
, F2
, KK4
, in
[6], 5);
219 ROUND(aaa
, bbb
, ccc
, ddd
, eee
, F2
, KK4
, in
[4], 8);
220 ROUND(eee
, aaa
, bbb
, ccc
, ddd
, F2
, KK4
, in
[1], 11);
221 ROUND(ddd
, eee
, aaa
, bbb
, ccc
, F2
, KK4
, in
[3], 14);
222 ROUND(ccc
, ddd
, eee
, aaa
, bbb
, F2
, KK4
, in
[11], 14);
223 ROUND(bbb
, ccc
, ddd
, eee
, aaa
, F2
, KK4
, in
[15], 6);
224 ROUND(aaa
, bbb
, ccc
, ddd
, eee
, F2
, KK4
, in
[0], 14);
225 ROUND(eee
, aaa
, bbb
, ccc
, ddd
, F2
, KK4
, in
[5], 6);
226 ROUND(ddd
, eee
, aaa
, bbb
, ccc
, F2
, KK4
, in
[12], 9);
227 ROUND(ccc
, ddd
, eee
, aaa
, bbb
, F2
, KK4
, in
[2], 12);
228 ROUND(bbb
, ccc
, ddd
, eee
, aaa
, F2
, KK4
, in
[13], 9);
229 ROUND(aaa
, bbb
, ccc
, ddd
, eee
, F2
, KK4
, in
[9], 12);
230 ROUND(eee
, aaa
, bbb
, ccc
, ddd
, F2
, KK4
, in
[7], 5);
231 ROUND(ddd
, eee
, aaa
, bbb
, ccc
, F2
, KK4
, in
[10], 15);
232 ROUND(ccc
, ddd
, eee
, aaa
, bbb
, F2
, KK4
, in
[14], 8);
234 /* round 5: right lane */
235 ROUND(bbb
, ccc
, ddd
, eee
, aaa
, F1
, KK5
, in
[12], 8);
236 ROUND(aaa
, bbb
, ccc
, ddd
, eee
, F1
, KK5
, in
[15], 5);
237 ROUND(eee
, aaa
, bbb
, ccc
, ddd
, F1
, KK5
, in
[10], 12);
238 ROUND(ddd
, eee
, aaa
, bbb
, ccc
, F1
, KK5
, in
[4], 9);
239 ROUND(ccc
, ddd
, eee
, aaa
, bbb
, F1
, KK5
, in
[1], 12);
240 ROUND(bbb
, ccc
, ddd
, eee
, aaa
, F1
, KK5
, in
[5], 5);
241 ROUND(aaa
, bbb
, ccc
, ddd
, eee
, F1
, KK5
, in
[8], 14);
242 ROUND(eee
, aaa
, bbb
, ccc
, ddd
, F1
, KK5
, in
[7], 6);
243 ROUND(ddd
, eee
, aaa
, bbb
, ccc
, F1
, KK5
, in
[6], 8);
244 ROUND(ccc
, ddd
, eee
, aaa
, bbb
, F1
, KK5
, in
[2], 13);
245 ROUND(bbb
, ccc
, ddd
, eee
, aaa
, F1
, KK5
, in
[13], 6);
246 ROUND(aaa
, bbb
, ccc
, ddd
, eee
, F1
, KK5
, in
[14], 5);
247 ROUND(eee
, aaa
, bbb
, ccc
, ddd
, F1
, KK5
, in
[0], 15);
248 ROUND(ddd
, eee
, aaa
, bbb
, ccc
, F1
, KK5
, in
[3], 13);
249 ROUND(ccc
, ddd
, eee
, aaa
, bbb
, F1
, KK5
, in
[9], 11);
250 ROUND(bbb
, ccc
, ddd
, eee
, aaa
, F1
, KK5
, in
[11], 11);
252 /* combine results */
253 ddd
+= cc
+ state
[1]; /* final result for state[0] */
254 state
[1] = state
[2] + dd
+ eee
;
255 state
[2] = state
[3] + ee
+ aaa
;
256 state
[3] = state
[4] + aa
+ bbb
;
257 state
[4] = state
[0] + bb
+ ccc
;
263 static int rmd160_init(struct shash_desc
*desc
)
265 struct rmd160_ctx
*rctx
= shash_desc_ctx(desc
);
267 rctx
->byte_count
= 0;
269 rctx
->state
[0] = RMD_H0
;
270 rctx
->state
[1] = RMD_H1
;
271 rctx
->state
[2] = RMD_H2
;
272 rctx
->state
[3] = RMD_H3
;
273 rctx
->state
[4] = RMD_H4
;
275 memset(rctx
->buffer
, 0, sizeof(rctx
->buffer
));
280 static int rmd160_update(struct shash_desc
*desc
, const u8
*data
,
283 struct rmd160_ctx
*rctx
= shash_desc_ctx(desc
);
284 const u32 avail
= sizeof(rctx
->buffer
) - (rctx
->byte_count
& 0x3f);
286 rctx
->byte_count
+= len
;
288 /* Enough space in buffer? If so copy and we're done */
290 memcpy((char *)rctx
->buffer
+ (sizeof(rctx
->buffer
) - avail
),
295 memcpy((char *)rctx
->buffer
+ (sizeof(rctx
->buffer
) - avail
),
298 rmd160_transform(rctx
->state
, rctx
->buffer
);
302 while (len
>= sizeof(rctx
->buffer
)) {
303 memcpy(rctx
->buffer
, data
, sizeof(rctx
->buffer
));
304 rmd160_transform(rctx
->state
, rctx
->buffer
);
305 data
+= sizeof(rctx
->buffer
);
306 len
-= sizeof(rctx
->buffer
);
309 memcpy(rctx
->buffer
, data
, len
);
315 /* Add padding and return the message digest. */
316 static int rmd160_final(struct shash_desc
*desc
, u8
*out
)
318 struct rmd160_ctx
*rctx
= shash_desc_ctx(desc
);
319 u32 i
, index
, padlen
;
321 __le32
*dst
= (__le32
*)out
;
322 static const u8 padding
[64] = { 0x80, };
324 bits
= cpu_to_le64(rctx
->byte_count
<< 3);
326 /* Pad out to 56 mod 64 */
327 index
= rctx
->byte_count
& 0x3f;
328 padlen
= (index
< 56) ? (56 - index
) : ((64+56) - index
);
329 rmd160_update(desc
, padding
, padlen
);
332 rmd160_update(desc
, (const u8
*)&bits
, sizeof(bits
));
334 /* Store state in digest */
335 for (i
= 0; i
< 5; i
++)
336 dst
[i
] = cpu_to_le32p(&rctx
->state
[i
]);
339 memset(rctx
, 0, sizeof(*rctx
));
344 static struct shash_alg alg
= {
345 .digestsize
= RMD160_DIGEST_SIZE
,
347 .update
= rmd160_update
,
348 .final
= rmd160_final
,
349 .descsize
= sizeof(struct rmd160_ctx
),
351 .cra_name
= "rmd160",
352 .cra_flags
= CRYPTO_ALG_TYPE_SHASH
,
353 .cra_blocksize
= RMD160_BLOCK_SIZE
,
354 .cra_module
= THIS_MODULE
,
358 static int __init
rmd160_mod_init(void)
360 return crypto_register_shash(&alg
);
363 static void __exit
rmd160_mod_fini(void)
365 crypto_unregister_shash(&alg
);
368 module_init(rmd160_mod_init
);
369 module_exit(rmd160_mod_fini
);
371 MODULE_LICENSE("GPL");
372 MODULE_DESCRIPTION("RIPEMD-160 Message Digest");
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