4 * RIPEMD-128 - RACE Integrity Primitives Evaluation Message Digest.
6 * Based on the reference implementation by Antoon Bosselaers, ESAT-COSIC
8 * Copyright (c) 2008 Adrian-Ken Rueegsegger <ken@codelabs.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>
40 #define F1(x, y, z) (x ^ y ^ z) /* XOR */
41 #define F2(x, y, z) (z ^ (x & (y ^ z))) /* x ? y : z */
42 #define F3(x, y, z) ((x | ~y) ^ z)
43 #define F4(x, y, z) (y ^ (z & (x ^ y))) /* z ? x : y */
45 #define ROUND(a, b, c, d, f, k, x, s) { \
46 (a) += f((b), (c), (d)) + le32_to_cpup(&(x)) + (k); \
47 (a) = rol32((a), (s)); \
50 static void rmd128_transform(u32
*state
, const __le32
*in
)
52 u32 aa
, bb
, cc
, dd
, aaa
, bbb
, ccc
, ddd
;
54 /* Initialize left lane */
60 /* Initialize right lane */
66 /* round 1: left lane */
67 ROUND(aa
, bb
, cc
, dd
, F1
, K1
, in
[0], 11);
68 ROUND(dd
, aa
, bb
, cc
, F1
, K1
, in
[1], 14);
69 ROUND(cc
, dd
, aa
, bb
, F1
, K1
, in
[2], 15);
70 ROUND(bb
, cc
, dd
, aa
, F1
, K1
, in
[3], 12);
71 ROUND(aa
, bb
, cc
, dd
, F1
, K1
, in
[4], 5);
72 ROUND(dd
, aa
, bb
, cc
, F1
, K1
, in
[5], 8);
73 ROUND(cc
, dd
, aa
, bb
, F1
, K1
, in
[6], 7);
74 ROUND(bb
, cc
, dd
, aa
, F1
, K1
, in
[7], 9);
75 ROUND(aa
, bb
, cc
, dd
, F1
, K1
, in
[8], 11);
76 ROUND(dd
, aa
, bb
, cc
, F1
, K1
, in
[9], 13);
77 ROUND(cc
, dd
, aa
, bb
, F1
, K1
, in
[10], 14);
78 ROUND(bb
, cc
, dd
, aa
, F1
, K1
, in
[11], 15);
79 ROUND(aa
, bb
, cc
, dd
, F1
, K1
, in
[12], 6);
80 ROUND(dd
, aa
, bb
, cc
, F1
, K1
, in
[13], 7);
81 ROUND(cc
, dd
, aa
, bb
, F1
, K1
, in
[14], 9);
82 ROUND(bb
, cc
, dd
, aa
, F1
, K1
, in
[15], 8);
84 /* round 2: left lane */
85 ROUND(aa
, bb
, cc
, dd
, F2
, K2
, in
[7], 7);
86 ROUND(dd
, aa
, bb
, cc
, F2
, K2
, in
[4], 6);
87 ROUND(cc
, dd
, aa
, bb
, F2
, K2
, in
[13], 8);
88 ROUND(bb
, cc
, dd
, aa
, F2
, K2
, in
[1], 13);
89 ROUND(aa
, bb
, cc
, dd
, F2
, K2
, in
[10], 11);
90 ROUND(dd
, aa
, bb
, cc
, F2
, K2
, in
[6], 9);
91 ROUND(cc
, dd
, aa
, bb
, F2
, K2
, in
[15], 7);
92 ROUND(bb
, cc
, dd
, aa
, F2
, K2
, in
[3], 15);
93 ROUND(aa
, bb
, cc
, dd
, F2
, K2
, in
[12], 7);
94 ROUND(dd
, aa
, bb
, cc
, F2
, K2
, in
[0], 12);
95 ROUND(cc
, dd
, aa
, bb
, F2
, K2
, in
[9], 15);
96 ROUND(bb
, cc
, dd
, aa
, F2
, K2
, in
[5], 9);
97 ROUND(aa
, bb
, cc
, dd
, F2
, K2
, in
[2], 11);
98 ROUND(dd
, aa
, bb
, cc
, F2
, K2
, in
[14], 7);
99 ROUND(cc
, dd
, aa
, bb
, F2
, K2
, in
[11], 13);
100 ROUND(bb
, cc
, dd
, aa
, F2
, K2
, in
[8], 12);
102 /* round 3: left lane */
103 ROUND(aa
, bb
, cc
, dd
, F3
, K3
, in
[3], 11);
104 ROUND(dd
, aa
, bb
, cc
, F3
, K3
, in
[10], 13);
105 ROUND(cc
, dd
, aa
, bb
, F3
, K3
, in
[14], 6);
106 ROUND(bb
, cc
, dd
, aa
, F3
, K3
, in
[4], 7);
107 ROUND(aa
, bb
, cc
, dd
, F3
, K3
, in
[9], 14);
108 ROUND(dd
, aa
, bb
, cc
, F3
, K3
, in
[15], 9);
109 ROUND(cc
, dd
, aa
, bb
, F3
, K3
, in
[8], 13);
110 ROUND(bb
, cc
, dd
, aa
, F3
, K3
, in
[1], 15);
111 ROUND(aa
, bb
, cc
, dd
, F3
, K3
, in
[2], 14);
112 ROUND(dd
, aa
, bb
, cc
, F3
, K3
, in
[7], 8);
113 ROUND(cc
, dd
, aa
, bb
, F3
, K3
, in
[0], 13);
114 ROUND(bb
, cc
, dd
, aa
, F3
, K3
, in
[6], 6);
115 ROUND(aa
, bb
, cc
, dd
, F3
, K3
, in
[13], 5);
116 ROUND(dd
, aa
, bb
, cc
, F3
, K3
, in
[11], 12);
117 ROUND(cc
, dd
, aa
, bb
, F3
, K3
, in
[5], 7);
118 ROUND(bb
, cc
, dd
, aa
, F3
, K3
, in
[12], 5);
120 /* round 4: left lane */
121 ROUND(aa
, bb
, cc
, dd
, F4
, K4
, in
[1], 11);
122 ROUND(dd
, aa
, bb
, cc
, F4
, K4
, in
[9], 12);
123 ROUND(cc
, dd
, aa
, bb
, F4
, K4
, in
[11], 14);
124 ROUND(bb
, cc
, dd
, aa
, F4
, K4
, in
[10], 15);
125 ROUND(aa
, bb
, cc
, dd
, F4
, K4
, in
[0], 14);
126 ROUND(dd
, aa
, bb
, cc
, F4
, K4
, in
[8], 15);
127 ROUND(cc
, dd
, aa
, bb
, F4
, K4
, in
[12], 9);
128 ROUND(bb
, cc
, dd
, aa
, F4
, K4
, in
[4], 8);
129 ROUND(aa
, bb
, cc
, dd
, F4
, K4
, in
[13], 9);
130 ROUND(dd
, aa
, bb
, cc
, F4
, K4
, in
[3], 14);
131 ROUND(cc
, dd
, aa
, bb
, F4
, K4
, in
[7], 5);
132 ROUND(bb
, cc
, dd
, aa
, F4
, K4
, in
[15], 6);
133 ROUND(aa
, bb
, cc
, dd
, F4
, K4
, in
[14], 8);
134 ROUND(dd
, aa
, bb
, cc
, F4
, K4
, in
[5], 6);
135 ROUND(cc
, dd
, aa
, bb
, F4
, K4
, in
[6], 5);
136 ROUND(bb
, cc
, dd
, aa
, F4
, K4
, in
[2], 12);
138 /* round 1: right lane */
139 ROUND(aaa
, bbb
, ccc
, ddd
, F4
, KK1
, in
[5], 8);
140 ROUND(ddd
, aaa
, bbb
, ccc
, F4
, KK1
, in
[14], 9);
141 ROUND(ccc
, ddd
, aaa
, bbb
, F4
, KK1
, in
[7], 9);
142 ROUND(bbb
, ccc
, ddd
, aaa
, F4
, KK1
, in
[0], 11);
143 ROUND(aaa
, bbb
, ccc
, ddd
, F4
, KK1
, in
[9], 13);
144 ROUND(ddd
, aaa
, bbb
, ccc
, F4
, KK1
, in
[2], 15);
145 ROUND(ccc
, ddd
, aaa
, bbb
, F4
, KK1
, in
[11], 15);
146 ROUND(bbb
, ccc
, ddd
, aaa
, F4
, KK1
, in
[4], 5);
147 ROUND(aaa
, bbb
, ccc
, ddd
, F4
, KK1
, in
[13], 7);
148 ROUND(ddd
, aaa
, bbb
, ccc
, F4
, KK1
, in
[6], 7);
149 ROUND(ccc
, ddd
, aaa
, bbb
, F4
, KK1
, in
[15], 8);
150 ROUND(bbb
, ccc
, ddd
, aaa
, F4
, KK1
, in
[8], 11);
151 ROUND(aaa
, bbb
, ccc
, ddd
, F4
, KK1
, in
[1], 14);
152 ROUND(ddd
, aaa
, bbb
, ccc
, F4
, KK1
, in
[10], 14);
153 ROUND(ccc
, ddd
, aaa
, bbb
, F4
, KK1
, in
[3], 12);
154 ROUND(bbb
, ccc
, ddd
, aaa
, F4
, KK1
, in
[12], 6);
156 /* round 2: right lane */
157 ROUND(aaa
, bbb
, ccc
, ddd
, F3
, KK2
, in
[6], 9);
158 ROUND(ddd
, aaa
, bbb
, ccc
, F3
, KK2
, in
[11], 13);
159 ROUND(ccc
, ddd
, aaa
, bbb
, F3
, KK2
, in
[3], 15);
160 ROUND(bbb
, ccc
, ddd
, aaa
, F3
, KK2
, in
[7], 7);
161 ROUND(aaa
, bbb
, ccc
, ddd
, F3
, KK2
, in
[0], 12);
162 ROUND(ddd
, aaa
, bbb
, ccc
, F3
, KK2
, in
[13], 8);
163 ROUND(ccc
, ddd
, aaa
, bbb
, F3
, KK2
, in
[5], 9);
164 ROUND(bbb
, ccc
, ddd
, aaa
, F3
, KK2
, in
[10], 11);
165 ROUND(aaa
, bbb
, ccc
, ddd
, F3
, KK2
, in
[14], 7);
166 ROUND(ddd
, aaa
, bbb
, ccc
, F3
, KK2
, in
[15], 7);
167 ROUND(ccc
, ddd
, aaa
, bbb
, F3
, KK2
, in
[8], 12);
168 ROUND(bbb
, ccc
, ddd
, aaa
, F3
, KK2
, in
[12], 7);
169 ROUND(aaa
, bbb
, ccc
, ddd
, F3
, KK2
, in
[4], 6);
170 ROUND(ddd
, aaa
, bbb
, ccc
, F3
, KK2
, in
[9], 15);
171 ROUND(ccc
, ddd
, aaa
, bbb
, F3
, KK2
, in
[1], 13);
172 ROUND(bbb
, ccc
, ddd
, aaa
, F3
, KK2
, in
[2], 11);
174 /* round 3: right lane */
175 ROUND(aaa
, bbb
, ccc
, ddd
, F2
, KK3
, in
[15], 9);
176 ROUND(ddd
, aaa
, bbb
, ccc
, F2
, KK3
, in
[5], 7);
177 ROUND(ccc
, ddd
, aaa
, bbb
, F2
, KK3
, in
[1], 15);
178 ROUND(bbb
, ccc
, ddd
, aaa
, F2
, KK3
, in
[3], 11);
179 ROUND(aaa
, bbb
, ccc
, ddd
, F2
, KK3
, in
[7], 8);
180 ROUND(ddd
, aaa
, bbb
, ccc
, F2
, KK3
, in
[14], 6);
181 ROUND(ccc
, ddd
, aaa
, bbb
, F2
, KK3
, in
[6], 6);
182 ROUND(bbb
, ccc
, ddd
, aaa
, F2
, KK3
, in
[9], 14);
183 ROUND(aaa
, bbb
, ccc
, ddd
, F2
, KK3
, in
[11], 12);
184 ROUND(ddd
, aaa
, bbb
, ccc
, F2
, KK3
, in
[8], 13);
185 ROUND(ccc
, ddd
, aaa
, bbb
, F2
, KK3
, in
[12], 5);
186 ROUND(bbb
, ccc
, ddd
, aaa
, F2
, KK3
, in
[2], 14);
187 ROUND(aaa
, bbb
, ccc
, ddd
, F2
, KK3
, in
[10], 13);
188 ROUND(ddd
, aaa
, bbb
, ccc
, F2
, KK3
, in
[0], 13);
189 ROUND(ccc
, ddd
, aaa
, bbb
, F2
, KK3
, in
[4], 7);
190 ROUND(bbb
, ccc
, ddd
, aaa
, F2
, KK3
, in
[13], 5);
192 /* round 4: right lane */
193 ROUND(aaa
, bbb
, ccc
, ddd
, F1
, KK4
, in
[8], 15);
194 ROUND(ddd
, aaa
, bbb
, ccc
, F1
, KK4
, in
[6], 5);
195 ROUND(ccc
, ddd
, aaa
, bbb
, F1
, KK4
, in
[4], 8);
196 ROUND(bbb
, ccc
, ddd
, aaa
, F1
, KK4
, in
[1], 11);
197 ROUND(aaa
, bbb
, ccc
, ddd
, F1
, KK4
, in
[3], 14);
198 ROUND(ddd
, aaa
, bbb
, ccc
, F1
, KK4
, in
[11], 14);
199 ROUND(ccc
, ddd
, aaa
, bbb
, F1
, KK4
, in
[15], 6);
200 ROUND(bbb
, ccc
, ddd
, aaa
, F1
, KK4
, in
[0], 14);
201 ROUND(aaa
, bbb
, ccc
, ddd
, F1
, KK4
, in
[5], 6);
202 ROUND(ddd
, aaa
, bbb
, ccc
, F1
, KK4
, in
[12], 9);
203 ROUND(ccc
, ddd
, aaa
, bbb
, F1
, KK4
, in
[2], 12);
204 ROUND(bbb
, ccc
, ddd
, aaa
, F1
, KK4
, in
[13], 9);
205 ROUND(aaa
, bbb
, ccc
, ddd
, F1
, KK4
, in
[9], 12);
206 ROUND(ddd
, aaa
, bbb
, ccc
, F1
, KK4
, in
[7], 5);
207 ROUND(ccc
, ddd
, aaa
, bbb
, F1
, KK4
, in
[10], 15);
208 ROUND(bbb
, ccc
, ddd
, aaa
, F1
, KK4
, in
[14], 8);
210 /* combine results */
211 ddd
+= cc
+ state
[1]; /* final result for state[0] */
212 state
[1] = state
[2] + dd
+ aaa
;
213 state
[2] = state
[3] + aa
+ bbb
;
214 state
[3] = state
[0] + bb
+ ccc
;
220 static int rmd128_init(struct shash_desc
*desc
)
222 struct rmd128_ctx
*rctx
= shash_desc_ctx(desc
);
224 rctx
->byte_count
= 0;
226 rctx
->state
[0] = RMD_H0
;
227 rctx
->state
[1] = RMD_H1
;
228 rctx
->state
[2] = RMD_H2
;
229 rctx
->state
[3] = RMD_H3
;
231 memset(rctx
->buffer
, 0, sizeof(rctx
->buffer
));
236 static int rmd128_update(struct shash_desc
*desc
, const u8
*data
,
239 struct rmd128_ctx
*rctx
= shash_desc_ctx(desc
);
240 const u32 avail
= sizeof(rctx
->buffer
) - (rctx
->byte_count
& 0x3f);
242 rctx
->byte_count
+= len
;
244 /* Enough space in buffer? If so copy and we're done */
246 memcpy((char *)rctx
->buffer
+ (sizeof(rctx
->buffer
) - avail
),
251 memcpy((char *)rctx
->buffer
+ (sizeof(rctx
->buffer
) - avail
),
254 rmd128_transform(rctx
->state
, rctx
->buffer
);
258 while (len
>= sizeof(rctx
->buffer
)) {
259 memcpy(rctx
->buffer
, data
, sizeof(rctx
->buffer
));
260 rmd128_transform(rctx
->state
, rctx
->buffer
);
261 data
+= sizeof(rctx
->buffer
);
262 len
-= sizeof(rctx
->buffer
);
265 memcpy(rctx
->buffer
, data
, len
);
271 /* Add padding and return the message digest. */
272 static int rmd128_final(struct shash_desc
*desc
, u8
*out
)
274 struct rmd128_ctx
*rctx
= shash_desc_ctx(desc
);
275 u32 i
, index
, padlen
;
277 __le32
*dst
= (__le32
*)out
;
278 static const u8 padding
[64] = { 0x80, };
280 bits
= cpu_to_le64(rctx
->byte_count
<< 3);
282 /* Pad out to 56 mod 64 */
283 index
= rctx
->byte_count
& 0x3f;
284 padlen
= (index
< 56) ? (56 - index
) : ((64+56) - index
);
285 rmd128_update(desc
, padding
, padlen
);
288 rmd128_update(desc
, (const u8
*)&bits
, sizeof(bits
));
290 /* Store state in digest */
291 for (i
= 0; i
< 4; i
++)
292 dst
[i
] = cpu_to_le32p(&rctx
->state
[i
]);
295 memset(rctx
, 0, sizeof(*rctx
));
300 static struct shash_alg alg
= {
301 .digestsize
= RMD128_DIGEST_SIZE
,
303 .update
= rmd128_update
,
304 .final
= rmd128_final
,
305 .descsize
= sizeof(struct rmd128_ctx
),
307 .cra_name
= "rmd128",
308 .cra_flags
= CRYPTO_ALG_TYPE_SHASH
,
309 .cra_blocksize
= RMD128_BLOCK_SIZE
,
310 .cra_module
= THIS_MODULE
,
314 static int __init
rmd128_mod_init(void)
316 return crypto_register_shash(&alg
);
319 static void __exit
rmd128_mod_fini(void)
321 crypto_unregister_shash(&alg
);
324 module_init(rmd128_mod_init
);
325 module_exit(rmd128_mod_fini
);
327 MODULE_LICENSE("GPL");
328 MODULE_AUTHOR("Adrian-Ken Rueegsegger <ken@codelabs.ch>");
329 MODULE_DESCRIPTION("RIPEMD-128 Message Digest");
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