3 * $Id: rmd160.c,v 1.4 2004/04/08 01:36:15 mdw Exp $
5 * The RIPEMD-160 message digest function
7 * (c) 1998 Straylight/Edgeware
10 /*----- Licensing notice --------------------------------------------------*
12 * This file is part of Catacomb.
14 * Catacomb is free software; you can redistribute it and/or modify
15 * it under the terms of the GNU Library General Public License as
16 * published by the Free Software Foundation; either version 2 of the
17 * License, or (at your option) any later version.
19 * Catacomb is distributed in the hope that it will be useful,
20 * but WITHOUT ANY WARRANTY; without even the implied warranty of
21 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
22 * GNU Library General Public License for more details.
24 * You should have received a copy of the GNU Library General Public
25 * License along with Catacomb; if not, write to the Free
26 * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
30 /*----- Header files ------------------------------------------------------*/
32 #include <mLib/bits.h>
35 #include "ghash-def.h"
39 /*----- Main code ---------------------------------------------------------*/
41 /* --- @rmd160_compress@ --- *
43 * Arguments: @rmd160_ctx *ctx@ = pointer to context block
44 * @const void *sbuf@ = pointer to buffer of appropriate size
48 * Use: RIPEMD-160 compression function.
51 void rmd160_compress(rmd160_ctx
*ctx
, const void *sbuf
)
57 /* --- Fetch the chaining variables --- */
65 /* --- Fetch the buffer contents --- */
71 for (i
= 0, p
= sbuf
; i
< 16; i
++, p
+= 4)
75 /* --- Definitions for round functions --- */
77 #define F(x, y, z) ((x) ^ (y) ^ (z))
78 #define G(x, y, z) (((x) & (y)) | (~(x) & (z)))
79 #define H(x, y, z) (((x) | ~(y)) ^ (z))
80 #define I(x, y, z) (((x) & (z)) | ((y) & ~(z)))
81 #define J(x, y, z) ((x) ^ ((y) | ~(z)))
83 #define T(v, w, x, y, z, i, r, f, k) do { \
84 uint32 _t = v + f(w, x, y) + buf[i] + k; \
85 v = ROL32(_t, r) + z; x = ROL32(x, 10); \
88 #define F1(v, w, x, y, z, i, r) T(v, w, x, y, z, i, r, F, 0x00000000)
89 #define G1(v, w, x, y, z, i, r) T(v, w, x, y, z, i, r, G, 0x5a827999)
90 #define H1(v, w, x, y, z, i, r) T(v, w, x, y, z, i, r, H, 0x6ed9eba1)
91 #define I1(v, w, x, y, z, i, r) T(v, w, x, y, z, i, r, I, 0x8f1bbcdc)
92 #define J1(v, w, x, y, z, i, r) T(v, w, x, y, z, i, r, J, 0xa953fd4e)
94 #define F2(v, w, x, y, z, i, r) T(v, w, x, y, z, i, r, J, 0x50a28be6)
95 #define G2(v, w, x, y, z, i, r) T(v, w, x, y, z, i, r, I, 0x5c4dd124)
96 #define H2(v, w, x, y, z, i, r) T(v, w, x, y, z, i, r, H, 0x6d703ef3)
97 #define I2(v, w, x, y, z, i, r) T(v, w, x, y, z, i, r, G, 0x7a6d76e9)
98 #define J2(v, w, x, y, z, i, r) T(v, w, x, y, z, i, r, F, 0x00000000)
100 /* --- First the left hand side --- */
102 F1(a
, b
, c
, d
, e
, 0, 11);
103 F1(e
, a
, b
, c
, d
, 1, 14);
104 F1(d
, e
, a
, b
, c
, 2, 15);
105 F1(c
, d
, e
, a
, b
, 3, 12);
106 F1(b
, c
, d
, e
, a
, 4, 5);
107 F1(a
, b
, c
, d
, e
, 5, 8);
108 F1(e
, a
, b
, c
, d
, 6, 7);
109 F1(d
, e
, a
, b
, c
, 7, 9);
110 F1(c
, d
, e
, a
, b
, 8, 11);
111 F1(b
, c
, d
, e
, a
, 9, 13);
112 F1(a
, b
, c
, d
, e
, 10, 14);
113 F1(e
, a
, b
, c
, d
, 11, 15);
114 F1(d
, e
, a
, b
, c
, 12, 6);
115 F1(c
, d
, e
, a
, b
, 13, 7);
116 F1(b
, c
, d
, e
, a
, 14, 9);
117 F1(a
, b
, c
, d
, e
, 15, 8);
119 G1(e
, a
, b
, c
, d
, 7, 7);
120 G1(d
, e
, a
, b
, c
, 4, 6);
121 G1(c
, d
, e
, a
, b
, 13, 8);
122 G1(b
, c
, d
, e
, a
, 1, 13);
123 G1(a
, b
, c
, d
, e
, 10, 11);
124 G1(e
, a
, b
, c
, d
, 6, 9);
125 G1(d
, e
, a
, b
, c
, 15, 7);
126 G1(c
, d
, e
, a
, b
, 3, 15);
127 G1(b
, c
, d
, e
, a
, 12, 7);
128 G1(a
, b
, c
, d
, e
, 0, 12);
129 G1(e
, a
, b
, c
, d
, 9, 15);
130 G1(d
, e
, a
, b
, c
, 5, 9);
131 G1(c
, d
, e
, a
, b
, 2, 11);
132 G1(b
, c
, d
, e
, a
, 14, 7);
133 G1(a
, b
, c
, d
, e
, 11, 13);
134 G1(e
, a
, b
, c
, d
, 8, 12);
136 H1(d
, e
, a
, b
, c
, 3, 11);
137 H1(c
, d
, e
, a
, b
, 10, 13);
138 H1(b
, c
, d
, e
, a
, 14, 6);
139 H1(a
, b
, c
, d
, e
, 4, 7);
140 H1(e
, a
, b
, c
, d
, 9, 14);
141 H1(d
, e
, a
, b
, c
, 15, 9);
142 H1(c
, d
, e
, a
, b
, 8, 13);
143 H1(b
, c
, d
, e
, a
, 1, 15);
144 H1(a
, b
, c
, d
, e
, 2, 14);
145 H1(e
, a
, b
, c
, d
, 7, 8);
146 H1(d
, e
, a
, b
, c
, 0, 13);
147 H1(c
, d
, e
, a
, b
, 6, 6);
148 H1(b
, c
, d
, e
, a
, 13, 5);
149 H1(a
, b
, c
, d
, e
, 11, 12);
150 H1(e
, a
, b
, c
, d
, 5, 7);
151 H1(d
, e
, a
, b
, c
, 12, 5);
153 I1(c
, d
, e
, a
, b
, 1, 11);
154 I1(b
, c
, d
, e
, a
, 9, 12);
155 I1(a
, b
, c
, d
, e
, 11, 14);
156 I1(e
, a
, b
, c
, d
, 10, 15);
157 I1(d
, e
, a
, b
, c
, 0, 14);
158 I1(c
, d
, e
, a
, b
, 8, 15);
159 I1(b
, c
, d
, e
, a
, 12, 9);
160 I1(a
, b
, c
, d
, e
, 4, 8);
161 I1(e
, a
, b
, c
, d
, 13, 9);
162 I1(d
, e
, a
, b
, c
, 3, 14);
163 I1(c
, d
, e
, a
, b
, 7, 5);
164 I1(b
, c
, d
, e
, a
, 15, 6);
165 I1(a
, b
, c
, d
, e
, 14, 8);
166 I1(e
, a
, b
, c
, d
, 5, 6);
167 I1(d
, e
, a
, b
, c
, 6, 5);
168 I1(c
, d
, e
, a
, b
, 2, 12);
170 J1(b
, c
, d
, e
, a
, 4, 9);
171 J1(a
, b
, c
, d
, e
, 0, 15);
172 J1(e
, a
, b
, c
, d
, 5, 5);
173 J1(d
, e
, a
, b
, c
, 9, 11);
174 J1(c
, d
, e
, a
, b
, 7, 6);
175 J1(b
, c
, d
, e
, a
, 12, 8);
176 J1(a
, b
, c
, d
, e
, 2, 13);
177 J1(e
, a
, b
, c
, d
, 10, 12);
178 J1(d
, e
, a
, b
, c
, 14, 5);
179 J1(c
, d
, e
, a
, b
, 1, 12);
180 J1(b
, c
, d
, e
, a
, 3, 13);
181 J1(a
, b
, c
, d
, e
, 8, 14);
182 J1(e
, a
, b
, c
, d
, 11, 11);
183 J1(d
, e
, a
, b
, c
, 6, 8);
184 J1(c
, d
, e
, a
, b
, 15, 5);
185 J1(b
, c
, d
, e
, a
, 13, 6);
187 /* --- And then the right hand side --- */
189 F2(A
, B
, C
, D
, E
, 5, 8);
190 F2(E
, A
, B
, C
, D
, 14, 9);
191 F2(D
, E
, A
, B
, C
, 7, 9);
192 F2(C
, D
, E
, A
, B
, 0, 11);
193 F2(B
, C
, D
, E
, A
, 9, 13);
194 F2(A
, B
, C
, D
, E
, 2, 15);
195 F2(E
, A
, B
, C
, D
, 11, 15);
196 F2(D
, E
, A
, B
, C
, 4, 5);
197 F2(C
, D
, E
, A
, B
, 13, 7);
198 F2(B
, C
, D
, E
, A
, 6, 7);
199 F2(A
, B
, C
, D
, E
, 15, 8);
200 F2(E
, A
, B
, C
, D
, 8, 11);
201 F2(D
, E
, A
, B
, C
, 1, 14);
202 F2(C
, D
, E
, A
, B
, 10, 14);
203 F2(B
, C
, D
, E
, A
, 3, 12);
204 F2(A
, B
, C
, D
, E
, 12, 6);
206 G2(E
, A
, B
, C
, D
, 6, 9);
207 G2(D
, E
, A
, B
, C
, 11, 13);
208 G2(C
, D
, E
, A
, B
, 3, 15);
209 G2(B
, C
, D
, E
, A
, 7, 7);
210 G2(A
, B
, C
, D
, E
, 0, 12);
211 G2(E
, A
, B
, C
, D
, 13, 8);
212 G2(D
, E
, A
, B
, C
, 5, 9);
213 G2(C
, D
, E
, A
, B
, 10, 11);
214 G2(B
, C
, D
, E
, A
, 14, 7);
215 G2(A
, B
, C
, D
, E
, 15, 7);
216 G2(E
, A
, B
, C
, D
, 8, 12);
217 G2(D
, E
, A
, B
, C
, 12, 7);
218 G2(C
, D
, E
, A
, B
, 4, 6);
219 G2(B
, C
, D
, E
, A
, 9, 15);
220 G2(A
, B
, C
, D
, E
, 1, 13);
221 G2(E
, A
, B
, C
, D
, 2, 11);
223 H2(D
, E
, A
, B
, C
, 15, 9);
224 H2(C
, D
, E
, A
, B
, 5, 7);
225 H2(B
, C
, D
, E
, A
, 1, 15);
226 H2(A
, B
, C
, D
, E
, 3, 11);
227 H2(E
, A
, B
, C
, D
, 7, 8);
228 H2(D
, E
, A
, B
, C
, 14, 6);
229 H2(C
, D
, E
, A
, B
, 6, 6);
230 H2(B
, C
, D
, E
, A
, 9, 14);
231 H2(A
, B
, C
, D
, E
, 11, 12);
232 H2(E
, A
, B
, C
, D
, 8, 13);
233 H2(D
, E
, A
, B
, C
, 12, 5);
234 H2(C
, D
, E
, A
, B
, 2, 14);
235 H2(B
, C
, D
, E
, A
, 10, 13);
236 H2(A
, B
, C
, D
, E
, 0, 13);
237 H2(E
, A
, B
, C
, D
, 4, 7);
238 H2(D
, E
, A
, B
, C
, 13, 5);
240 I2(C
, D
, E
, A
, B
, 8, 15);
241 I2(B
, C
, D
, E
, A
, 6, 5);
242 I2(A
, B
, C
, D
, E
, 4, 8);
243 I2(E
, A
, B
, C
, D
, 1, 11);
244 I2(D
, E
, A
, B
, C
, 3, 14);
245 I2(C
, D
, E
, A
, B
, 11, 14);
246 I2(B
, C
, D
, E
, A
, 15, 6);
247 I2(A
, B
, C
, D
, E
, 0, 14);
248 I2(E
, A
, B
, C
, D
, 5, 6);
249 I2(D
, E
, A
, B
, C
, 12, 9);
250 I2(C
, D
, E
, A
, B
, 2, 12);
251 I2(B
, C
, D
, E
, A
, 13, 9);
252 I2(A
, B
, C
, D
, E
, 9, 12);
253 I2(E
, A
, B
, C
, D
, 7, 5);
254 I2(D
, E
, A
, B
, C
, 10, 15);
255 I2(C
, D
, E
, A
, B
, 14, 8);
257 J2(B
, C
, D
, E
, A
, 12, 8);
258 J2(A
, B
, C
, D
, E
, 15, 5);
259 J2(E
, A
, B
, C
, D
, 10, 12);
260 J2(D
, E
, A
, B
, C
, 4, 9);
261 J2(C
, D
, E
, A
, B
, 1, 12);
262 J2(B
, C
, D
, E
, A
, 5, 5);
263 J2(A
, B
, C
, D
, E
, 8, 14);
264 J2(E
, A
, B
, C
, D
, 7, 6);
265 J2(D
, E
, A
, B
, C
, 6, 8);
266 J2(C
, D
, E
, A
, B
, 2, 13);
267 J2(B
, C
, D
, E
, A
, 13, 6);
268 J2(A
, B
, C
, D
, E
, 14, 5);
269 J2(E
, A
, B
, C
, D
, 0, 15);
270 J2(D
, E
, A
, B
, C
, 3, 13);
271 J2(C
, D
, E
, A
, B
, 9, 11);
272 J2(B
, C
, D
, E
, A
, 11, 11);
274 /* --- Recombine the two halves --- */
278 tmp
= ctx
->b
+ c
+ D
;
279 ctx
->b
= ctx
->c
+ d
+ E
;
280 ctx
->c
= ctx
->d
+ e
+ A
;
281 ctx
->d
= ctx
->e
+ a
+ B
;
282 ctx
->e
= ctx
->a
+ b
+ C
;
287 /* --- @rmd160_init@ --- *
289 * Arguments: @rmd160_ctx *ctx@ = pointer to context block to initialize
293 * Use: Initializes a context block ready for hashing.
296 void rmd160_init(rmd160_ctx
*ctx
)
304 ctx
->nl
= ctx
->nh
= 0;
307 /* --- @rmd160_set@ --- *
309 * Arguments: @rmd160_ctx *ctx@ = pointer to context block
310 * @const void *buf@ = pointer to state buffer
311 * @unsigned long count@ = current count of bytes processed
315 * Use: Initializes a context block from a given state. This is
316 * useful in cases where the initial hash state is meant to be
317 * secret, e.g., for NMAC and HMAC support.
320 void rmd160_set(rmd160_ctx
*ctx
, const void *buf
, unsigned long count
)
322 const octet
*p
= buf
;
323 ctx
->a
= LOAD32_L(p
+ 0);
324 ctx
->b
= LOAD32_L(p
+ 4);
325 ctx
->c
= LOAD32_L(p
+ 8);
326 ctx
->d
= LOAD32_L(p
+ 12);
327 ctx
->e
= LOAD32_L(p
+ 16);
329 ctx
->nl
= U32(count
);
330 ctx
->nh
= U32(((count
& ~MASK32
) >> 16) >> 16);
333 /* --- @rmd160_hash@ --- *
335 * Arguments: @rmd160_ctx *ctx@ = pointer to context block
336 * @const void *buf@ = buffer of data to hash
337 * @size_t sz@ = size of buffer to hash
341 * Use: Hashes a buffer of data. The buffer may be of any size and
345 void rmd160_hash(rmd160_ctx
*ctx
, const void *buf
, size_t sz
)
347 HASH_BUFFER(RMD160
, rmd160
, ctx
, buf
, sz
);
350 /* --- @rmd160_done@ --- *
352 * Arguments: @rmd160_ctx *ctx@ = pointer to context block
353 * @void *hash@ = pointer to output buffer
357 * Use: Returns the hash of the data read so far.
360 void rmd160_done(rmd160_ctx
*ctx
, void *hash
)
363 HASH_MD5STRENGTH(RMD160
, rmd160
, ctx
);
364 STORE32_L(p
+ 0, ctx
->a
);
365 STORE32_L(p
+ 4, ctx
->b
);
366 STORE32_L(p
+ 8, ctx
->c
);
367 STORE32_L(p
+ 12, ctx
->d
);
368 STORE32_L(p
+ 16, ctx
->e
);
371 /* --- @rmd160_state@ --- *
373 * Arguments: @rmd160_ctx *ctx@ = pointer to context
374 * @void *state@ = pointer to buffer for current state
376 * Returns: Number of bytes written to the hash function so far.
378 * Use: Returns the current state of the hash function such that
379 * it can be passed to @rmd160_set@.
382 unsigned long rmd160_state(rmd160_ctx
*ctx
, void *state
)
385 STORE32_L(p
+ 0, ctx
->a
);
386 STORE32_L(p
+ 4, ctx
->b
);
387 STORE32_L(p
+ 8, ctx
->c
);
388 STORE32_L(p
+ 12, ctx
->d
);
389 STORE32_L(p
+ 16, ctx
->e
);
390 return (ctx
->nl
| ((ctx
->nh
<< 16) << 16));
393 /* --- Generic interface --- */
395 GHASH_DEF(RMD160
, rmd160
)
397 /* --- Test code --- */
399 HASH_TEST(RMD160
, rmd160
)
401 /*----- That's all, folks -------------------------------------------------*/