3 * $Id: rmd160.c,v 1.2 1999/12/10 23:20:03 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 /*----- Revision history --------------------------------------------------*
33 * Revision 1.2 1999/12/10 23:20:03 mdw
34 * New hash interface requirements.
36 * Revision 1.1 1999/09/03 08:41:12 mdw
41 /*----- Header files ------------------------------------------------------*/
43 #include <mLib/bits.h>
46 #include "ghash-def.h"
50 /*----- Main code ---------------------------------------------------------*/
52 /* --- @rmd160_compress@ --- *
54 * Arguments: @rmd160_ctx *ctx@ = pointer to context block
55 * @const void *sbuf@ = pointer to buffer of appropriate size
59 * Use: RIPEMD-160 compression function.
62 void rmd160_compress(rmd160_ctx
*ctx
, const void *sbuf
)
68 /* --- Fetch the chaining variables --- */
76 /* --- Fetch the buffer contents --- */
82 for (i
= 0, p
= sbuf
; i
< 16; i
++, p
+= 4)
86 /* --- Definitions for round functions --- */
88 #define F(x, y, z) ((x) ^ (y) ^ (z))
89 #define G(x, y, z) (((x) & (y)) | (~(x) & (z)))
90 #define H(x, y, z) (((x) | ~(y)) ^ (z))
91 #define I(x, y, z) (((x) & (z)) | ((y) & ~(z)))
92 #define J(x, y, z) ((x) ^ ((y) | ~(z)))
94 #define T(v, w, x, y, z, i, r, f, k) do { \
95 uint32 _t = v + f(w, x, y) + buf[i] + k; \
96 v = ROL32(_t, r) + z; x = ROL32(x, 10); \
99 #define F1(v, w, x, y, z, i, r) T(v, w, x, y, z, i, r, F, 0x00000000)
100 #define G1(v, w, x, y, z, i, r) T(v, w, x, y, z, i, r, G, 0x5a827999)
101 #define H1(v, w, x, y, z, i, r) T(v, w, x, y, z, i, r, H, 0x6ed9eba1)
102 #define I1(v, w, x, y, z, i, r) T(v, w, x, y, z, i, r, I, 0x8f1bbcdc)
103 #define J1(v, w, x, y, z, i, r) T(v, w, x, y, z, i, r, J, 0xa953fd4e)
105 #define F2(v, w, x, y, z, i, r) T(v, w, x, y, z, i, r, J, 0x50a28be6)
106 #define G2(v, w, x, y, z, i, r) T(v, w, x, y, z, i, r, I, 0x5c4dd124)
107 #define H2(v, w, x, y, z, i, r) T(v, w, x, y, z, i, r, H, 0x6d703ef3)
108 #define I2(v, w, x, y, z, i, r) T(v, w, x, y, z, i, r, G, 0x7a6d76e9)
109 #define J2(v, w, x, y, z, i, r) T(v, w, x, y, z, i, r, F, 0x00000000)
111 /* --- First the left hand side --- */
113 F1(a
, b
, c
, d
, e
, 0, 11);
114 F1(e
, a
, b
, c
, d
, 1, 14);
115 F1(d
, e
, a
, b
, c
, 2, 15);
116 F1(c
, d
, e
, a
, b
, 3, 12);
117 F1(b
, c
, d
, e
, a
, 4, 5);
118 F1(a
, b
, c
, d
, e
, 5, 8);
119 F1(e
, a
, b
, c
, d
, 6, 7);
120 F1(d
, e
, a
, b
, c
, 7, 9);
121 F1(c
, d
, e
, a
, b
, 8, 11);
122 F1(b
, c
, d
, e
, a
, 9, 13);
123 F1(a
, b
, c
, d
, e
, 10, 14);
124 F1(e
, a
, b
, c
, d
, 11, 15);
125 F1(d
, e
, a
, b
, c
, 12, 6);
126 F1(c
, d
, e
, a
, b
, 13, 7);
127 F1(b
, c
, d
, e
, a
, 14, 9);
128 F1(a
, b
, c
, d
, e
, 15, 8);
130 G1(e
, a
, b
, c
, d
, 7, 7);
131 G1(d
, e
, a
, b
, c
, 4, 6);
132 G1(c
, d
, e
, a
, b
, 13, 8);
133 G1(b
, c
, d
, e
, a
, 1, 13);
134 G1(a
, b
, c
, d
, e
, 10, 11);
135 G1(e
, a
, b
, c
, d
, 6, 9);
136 G1(d
, e
, a
, b
, c
, 15, 7);
137 G1(c
, d
, e
, a
, b
, 3, 15);
138 G1(b
, c
, d
, e
, a
, 12, 7);
139 G1(a
, b
, c
, d
, e
, 0, 12);
140 G1(e
, a
, b
, c
, d
, 9, 15);
141 G1(d
, e
, a
, b
, c
, 5, 9);
142 G1(c
, d
, e
, a
, b
, 2, 11);
143 G1(b
, c
, d
, e
, a
, 14, 7);
144 G1(a
, b
, c
, d
, e
, 11, 13);
145 G1(e
, a
, b
, c
, d
, 8, 12);
147 H1(d
, e
, a
, b
, c
, 3, 11);
148 H1(c
, d
, e
, a
, b
, 10, 13);
149 H1(b
, c
, d
, e
, a
, 14, 6);
150 H1(a
, b
, c
, d
, e
, 4, 7);
151 H1(e
, a
, b
, c
, d
, 9, 14);
152 H1(d
, e
, a
, b
, c
, 15, 9);
153 H1(c
, d
, e
, a
, b
, 8, 13);
154 H1(b
, c
, d
, e
, a
, 1, 15);
155 H1(a
, b
, c
, d
, e
, 2, 14);
156 H1(e
, a
, b
, c
, d
, 7, 8);
157 H1(d
, e
, a
, b
, c
, 0, 13);
158 H1(c
, d
, e
, a
, b
, 6, 6);
159 H1(b
, c
, d
, e
, a
, 13, 5);
160 H1(a
, b
, c
, d
, e
, 11, 12);
161 H1(e
, a
, b
, c
, d
, 5, 7);
162 H1(d
, e
, a
, b
, c
, 12, 5);
164 I1(c
, d
, e
, a
, b
, 1, 11);
165 I1(b
, c
, d
, e
, a
, 9, 12);
166 I1(a
, b
, c
, d
, e
, 11, 14);
167 I1(e
, a
, b
, c
, d
, 10, 15);
168 I1(d
, e
, a
, b
, c
, 0, 14);
169 I1(c
, d
, e
, a
, b
, 8, 15);
170 I1(b
, c
, d
, e
, a
, 12, 9);
171 I1(a
, b
, c
, d
, e
, 4, 8);
172 I1(e
, a
, b
, c
, d
, 13, 9);
173 I1(d
, e
, a
, b
, c
, 3, 14);
174 I1(c
, d
, e
, a
, b
, 7, 5);
175 I1(b
, c
, d
, e
, a
, 15, 6);
176 I1(a
, b
, c
, d
, e
, 14, 8);
177 I1(e
, a
, b
, c
, d
, 5, 6);
178 I1(d
, e
, a
, b
, c
, 6, 5);
179 I1(c
, d
, e
, a
, b
, 2, 12);
181 J1(b
, c
, d
, e
, a
, 4, 9);
182 J1(a
, b
, c
, d
, e
, 0, 15);
183 J1(e
, a
, b
, c
, d
, 5, 5);
184 J1(d
, e
, a
, b
, c
, 9, 11);
185 J1(c
, d
, e
, a
, b
, 7, 6);
186 J1(b
, c
, d
, e
, a
, 12, 8);
187 J1(a
, b
, c
, d
, e
, 2, 13);
188 J1(e
, a
, b
, c
, d
, 10, 12);
189 J1(d
, e
, a
, b
, c
, 14, 5);
190 J1(c
, d
, e
, a
, b
, 1, 12);
191 J1(b
, c
, d
, e
, a
, 3, 13);
192 J1(a
, b
, c
, d
, e
, 8, 14);
193 J1(e
, a
, b
, c
, d
, 11, 11);
194 J1(d
, e
, a
, b
, c
, 6, 8);
195 J1(c
, d
, e
, a
, b
, 15, 5);
196 J1(b
, c
, d
, e
, a
, 13, 6);
198 /* --- And then the right hand side --- */
200 F2(A
, B
, C
, D
, E
, 5, 8);
201 F2(E
, A
, B
, C
, D
, 14, 9);
202 F2(D
, E
, A
, B
, C
, 7, 9);
203 F2(C
, D
, E
, A
, B
, 0, 11);
204 F2(B
, C
, D
, E
, A
, 9, 13);
205 F2(A
, B
, C
, D
, E
, 2, 15);
206 F2(E
, A
, B
, C
, D
, 11, 15);
207 F2(D
, E
, A
, B
, C
, 4, 5);
208 F2(C
, D
, E
, A
, B
, 13, 7);
209 F2(B
, C
, D
, E
, A
, 6, 7);
210 F2(A
, B
, C
, D
, E
, 15, 8);
211 F2(E
, A
, B
, C
, D
, 8, 11);
212 F2(D
, E
, A
, B
, C
, 1, 14);
213 F2(C
, D
, E
, A
, B
, 10, 14);
214 F2(B
, C
, D
, E
, A
, 3, 12);
215 F2(A
, B
, C
, D
, E
, 12, 6);
217 G2(E
, A
, B
, C
, D
, 6, 9);
218 G2(D
, E
, A
, B
, C
, 11, 13);
219 G2(C
, D
, E
, A
, B
, 3, 15);
220 G2(B
, C
, D
, E
, A
, 7, 7);
221 G2(A
, B
, C
, D
, E
, 0, 12);
222 G2(E
, A
, B
, C
, D
, 13, 8);
223 G2(D
, E
, A
, B
, C
, 5, 9);
224 G2(C
, D
, E
, A
, B
, 10, 11);
225 G2(B
, C
, D
, E
, A
, 14, 7);
226 G2(A
, B
, C
, D
, E
, 15, 7);
227 G2(E
, A
, B
, C
, D
, 8, 12);
228 G2(D
, E
, A
, B
, C
, 12, 7);
229 G2(C
, D
, E
, A
, B
, 4, 6);
230 G2(B
, C
, D
, E
, A
, 9, 15);
231 G2(A
, B
, C
, D
, E
, 1, 13);
232 G2(E
, A
, B
, C
, D
, 2, 11);
234 H2(D
, E
, A
, B
, C
, 15, 9);
235 H2(C
, D
, E
, A
, B
, 5, 7);
236 H2(B
, C
, D
, E
, A
, 1, 15);
237 H2(A
, B
, C
, D
, E
, 3, 11);
238 H2(E
, A
, B
, C
, D
, 7, 8);
239 H2(D
, E
, A
, B
, C
, 14, 6);
240 H2(C
, D
, E
, A
, B
, 6, 6);
241 H2(B
, C
, D
, E
, A
, 9, 14);
242 H2(A
, B
, C
, D
, E
, 11, 12);
243 H2(E
, A
, B
, C
, D
, 8, 13);
244 H2(D
, E
, A
, B
, C
, 12, 5);
245 H2(C
, D
, E
, A
, B
, 2, 14);
246 H2(B
, C
, D
, E
, A
, 10, 13);
247 H2(A
, B
, C
, D
, E
, 0, 13);
248 H2(E
, A
, B
, C
, D
, 4, 7);
249 H2(D
, E
, A
, B
, C
, 13, 5);
251 I2(C
, D
, E
, A
, B
, 8, 15);
252 I2(B
, C
, D
, E
, A
, 6, 5);
253 I2(A
, B
, C
, D
, E
, 4, 8);
254 I2(E
, A
, B
, C
, D
, 1, 11);
255 I2(D
, E
, A
, B
, C
, 3, 14);
256 I2(C
, D
, E
, A
, B
, 11, 14);
257 I2(B
, C
, D
, E
, A
, 15, 6);
258 I2(A
, B
, C
, D
, E
, 0, 14);
259 I2(E
, A
, B
, C
, D
, 5, 6);
260 I2(D
, E
, A
, B
, C
, 12, 9);
261 I2(C
, D
, E
, A
, B
, 2, 12);
262 I2(B
, C
, D
, E
, A
, 13, 9);
263 I2(A
, B
, C
, D
, E
, 9, 12);
264 I2(E
, A
, B
, C
, D
, 7, 5);
265 I2(D
, E
, A
, B
, C
, 10, 15);
266 I2(C
, D
, E
, A
, B
, 14, 8);
268 J2(B
, C
, D
, E
, A
, 12, 8);
269 J2(A
, B
, C
, D
, E
, 15, 5);
270 J2(E
, A
, B
, C
, D
, 10, 12);
271 J2(D
, E
, A
, B
, C
, 4, 9);
272 J2(C
, D
, E
, A
, B
, 1, 12);
273 J2(B
, C
, D
, E
, A
, 5, 5);
274 J2(A
, B
, C
, D
, E
, 8, 14);
275 J2(E
, A
, B
, C
, D
, 7, 6);
276 J2(D
, E
, A
, B
, C
, 6, 8);
277 J2(C
, D
, E
, A
, B
, 2, 13);
278 J2(B
, C
, D
, E
, A
, 13, 6);
279 J2(A
, B
, C
, D
, E
, 14, 5);
280 J2(E
, A
, B
, C
, D
, 0, 15);
281 J2(D
, E
, A
, B
, C
, 3, 13);
282 J2(C
, D
, E
, A
, B
, 9, 11);
283 J2(B
, C
, D
, E
, A
, 11, 11);
285 /* --- Recombine the two halves --- */
289 tmp
= ctx
->b
+ c
+ D
;
290 ctx
->b
= ctx
->c
+ d
+ E
;
291 ctx
->c
= ctx
->d
+ e
+ A
;
292 ctx
->d
= ctx
->e
+ a
+ B
;
293 ctx
->e
= ctx
->a
+ b
+ C
;
298 /* --- @rmd160_init@ --- *
300 * Arguments: @rmd160_ctx *ctx@ = pointer to context block to initialize
304 * Use: Initializes a context block ready for hashing.
307 void rmd160_init(rmd160_ctx
*ctx
)
315 ctx
->nl
= ctx
->nh
= 0;
318 /* --- @rmd160_set@ --- *
320 * Arguments: @rmd160_ctx *ctx@ = pointer to context block
321 * @const void *buf@ = pointer to state buffer
322 * @unsigned long count@ = current count of bytes processed
326 * Use: Initializes a context block from a given state. This is
327 * useful in cases where the initial hash state is meant to be
328 * secret, e.g., for NMAC and HMAC support.
331 void rmd160_set(rmd160_ctx
*ctx
, const void *buf
, unsigned long count
)
333 const octet
*p
= buf
;
334 ctx
->a
= LOAD32_L(p
+ 0);
335 ctx
->b
= LOAD32_L(p
+ 4);
336 ctx
->c
= LOAD32_L(p
+ 8);
337 ctx
->d
= LOAD32_L(p
+ 12);
338 ctx
->e
= LOAD32_L(p
+ 16);
340 ctx
->nl
= U32(count
);
341 ctx
->nh
= U32((count
>> 16) >> 16);
344 /* --- @rmd160_hash@ --- *
346 * Arguments: @rmd160_ctx *ctx@ = pointer to context block
347 * @const void *buf@ = buffer of data to hash
348 * @size_t sz@ = size of buffer to hash
352 * Use: Hashes a buffer of data. The buffer may be of any size and
356 void rmd160_hash(rmd160_ctx
*ctx
, const void *buf
, size_t sz
)
358 HASH_BUFFER(RMD160
, rmd160
, ctx
, buf
, sz
);
361 /* --- @rmd160_done@ --- *
363 * Arguments: @rmd160_ctx *ctx@ = pointer to context block
364 * @void *hash@ = pointer to output buffer
368 * Use: Returns the hash of the data read so far.
371 void rmd160_done(rmd160_ctx
*ctx
, void *hash
)
374 HASH_MD5STRENGTH(RMD160
, rmd160
, ctx
);
375 STORE32_L(p
+ 0, ctx
->a
);
376 STORE32_L(p
+ 4, ctx
->b
);
377 STORE32_L(p
+ 8, ctx
->c
);
378 STORE32_L(p
+ 12, ctx
->d
);
379 STORE32_L(p
+ 16, ctx
->e
);
382 /* --- @rmd160_state@ --- *
384 * Arguments: @rmd160_ctx *ctx@ = pointer to context
385 * @void *state@ = pointer to buffer for current state
387 * Returns: Number of bytes written to the hash function so far.
389 * Use: Returns the current state of the hash function such that
390 * it can be passed to @rmd160_set@.
393 unsigned long rmd160_state(rmd160_ctx
*ctx
, void *state
)
396 STORE32_L(p
+ 0, ctx
->a
);
397 STORE32_L(p
+ 4, ctx
->b
);
398 STORE32_L(p
+ 8, ctx
->c
);
399 STORE32_L(p
+ 12, ctx
->d
);
400 STORE32_L(p
+ 16, ctx
->e
);
401 return (ctx
->nl
| ((ctx
->nh
<< 16) << 16));
404 /* --- Generic interface --- */
406 GHASH_DEF(RMD160
, rmd160
)
408 /* --- Test code --- */
410 HASH_TEST(RMD160
, rmd160
)
412 /*----- That's all, folks -------------------------------------------------*/