3 * $Id: rmd160.c,v 1.1 1999/09/03 08:41:12 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 1.1 1999/09/03 08:41:12 mdw
38 /*----- Header files ------------------------------------------------------*/
40 #include <mLib/bits.h>
45 /*----- Main code ---------------------------------------------------------*/
47 /* --- @rmd160_compress@ --- *
49 * Arguments: @rmd160_ctx *ctx@ = pointer to context block
50 * @const void *sbuf@ = pointer to buffer of appropriate size
54 * Use: RIPEMD-160 compression function.
57 void rmd160_compress(rmd160_ctx
*ctx
, const void *sbuf
)
63 /* --- Fetch the chaining variables --- */
71 /* --- Fetch the buffer contents --- */
77 for (i
= 0, p
= sbuf
; i
< 16; i
++, p
+= 4)
81 /* --- Definitions for round functions --- */
83 #define F(x, y, z) ((x) ^ (y) ^ (z))
84 #define G(x, y, z) (((x) & (y)) | (~(x) & (z)))
85 #define H(x, y, z) (((x) | ~(y)) ^ (z))
86 #define I(x, y, z) (((x) & (z)) | ((y) & ~(z)))
87 #define J(x, y, z) ((x) ^ ((y) | ~(z)))
89 #define T(v, w, x, y, z, i, r, f, k) do { \
90 uint32 _t = v + f(w, x, y) + buf[i] + k; \
91 v = ROL32(_t, r) + z; x = ROL32(x, 10); \
94 #define F1(v, w, x, y, z, i, r) T(v, w, x, y, z, i, r, F, 0x00000000)
95 #define G1(v, w, x, y, z, i, r) T(v, w, x, y, z, i, r, G, 0x5a827999)
96 #define H1(v, w, x, y, z, i, r) T(v, w, x, y, z, i, r, H, 0x6ed9eba1)
97 #define I1(v, w, x, y, z, i, r) T(v, w, x, y, z, i, r, I, 0x8f1bbcdc)
98 #define J1(v, w, x, y, z, i, r) T(v, w, x, y, z, i, r, J, 0xa953fd4e)
100 #define F2(v, w, x, y, z, i, r) T(v, w, x, y, z, i, r, J, 0x50a28be6)
101 #define G2(v, w, x, y, z, i, r) T(v, w, x, y, z, i, r, I, 0x5c4dd124)
102 #define H2(v, w, x, y, z, i, r) T(v, w, x, y, z, i, r, H, 0x6d703ef3)
103 #define I2(v, w, x, y, z, i, r) T(v, w, x, y, z, i, r, G, 0x7a6d76e9)
104 #define J2(v, w, x, y, z, i, r) T(v, w, x, y, z, i, r, F, 0x00000000)
106 /* --- First the left hand side --- */
108 F1(a
, b
, c
, d
, e
, 0, 11);
109 F1(e
, a
, b
, c
, d
, 1, 14);
110 F1(d
, e
, a
, b
, c
, 2, 15);
111 F1(c
, d
, e
, a
, b
, 3, 12);
112 F1(b
, c
, d
, e
, a
, 4, 5);
113 F1(a
, b
, c
, d
, e
, 5, 8);
114 F1(e
, a
, b
, c
, d
, 6, 7);
115 F1(d
, e
, a
, b
, c
, 7, 9);
116 F1(c
, d
, e
, a
, b
, 8, 11);
117 F1(b
, c
, d
, e
, a
, 9, 13);
118 F1(a
, b
, c
, d
, e
, 10, 14);
119 F1(e
, a
, b
, c
, d
, 11, 15);
120 F1(d
, e
, a
, b
, c
, 12, 6);
121 F1(c
, d
, e
, a
, b
, 13, 7);
122 F1(b
, c
, d
, e
, a
, 14, 9);
123 F1(a
, b
, c
, d
, e
, 15, 8);
125 G1(e
, a
, b
, c
, d
, 7, 7);
126 G1(d
, e
, a
, b
, c
, 4, 6);
127 G1(c
, d
, e
, a
, b
, 13, 8);
128 G1(b
, c
, d
, e
, a
, 1, 13);
129 G1(a
, b
, c
, d
, e
, 10, 11);
130 G1(e
, a
, b
, c
, d
, 6, 9);
131 G1(d
, e
, a
, b
, c
, 15, 7);
132 G1(c
, d
, e
, a
, b
, 3, 15);
133 G1(b
, c
, d
, e
, a
, 12, 7);
134 G1(a
, b
, c
, d
, e
, 0, 12);
135 G1(e
, a
, b
, c
, d
, 9, 15);
136 G1(d
, e
, a
, b
, c
, 5, 9);
137 G1(c
, d
, e
, a
, b
, 2, 11);
138 G1(b
, c
, d
, e
, a
, 14, 7);
139 G1(a
, b
, c
, d
, e
, 11, 13);
140 G1(e
, a
, b
, c
, d
, 8, 12);
142 H1(d
, e
, a
, b
, c
, 3, 11);
143 H1(c
, d
, e
, a
, b
, 10, 13);
144 H1(b
, c
, d
, e
, a
, 14, 6);
145 H1(a
, b
, c
, d
, e
, 4, 7);
146 H1(e
, a
, b
, c
, d
, 9, 14);
147 H1(d
, e
, a
, b
, c
, 15, 9);
148 H1(c
, d
, e
, a
, b
, 8, 13);
149 H1(b
, c
, d
, e
, a
, 1, 15);
150 H1(a
, b
, c
, d
, e
, 2, 14);
151 H1(e
, a
, b
, c
, d
, 7, 8);
152 H1(d
, e
, a
, b
, c
, 0, 13);
153 H1(c
, d
, e
, a
, b
, 6, 6);
154 H1(b
, c
, d
, e
, a
, 13, 5);
155 H1(a
, b
, c
, d
, e
, 11, 12);
156 H1(e
, a
, b
, c
, d
, 5, 7);
157 H1(d
, e
, a
, b
, c
, 12, 5);
159 I1(c
, d
, e
, a
, b
, 1, 11);
160 I1(b
, c
, d
, e
, a
, 9, 12);
161 I1(a
, b
, c
, d
, e
, 11, 14);
162 I1(e
, a
, b
, c
, d
, 10, 15);
163 I1(d
, e
, a
, b
, c
, 0, 14);
164 I1(c
, d
, e
, a
, b
, 8, 15);
165 I1(b
, c
, d
, e
, a
, 12, 9);
166 I1(a
, b
, c
, d
, e
, 4, 8);
167 I1(e
, a
, b
, c
, d
, 13, 9);
168 I1(d
, e
, a
, b
, c
, 3, 14);
169 I1(c
, d
, e
, a
, b
, 7, 5);
170 I1(b
, c
, d
, e
, a
, 15, 6);
171 I1(a
, b
, c
, d
, e
, 14, 8);
172 I1(e
, a
, b
, c
, d
, 5, 6);
173 I1(d
, e
, a
, b
, c
, 6, 5);
174 I1(c
, d
, e
, a
, b
, 2, 12);
176 J1(b
, c
, d
, e
, a
, 4, 9);
177 J1(a
, b
, c
, d
, e
, 0, 15);
178 J1(e
, a
, b
, c
, d
, 5, 5);
179 J1(d
, e
, a
, b
, c
, 9, 11);
180 J1(c
, d
, e
, a
, b
, 7, 6);
181 J1(b
, c
, d
, e
, a
, 12, 8);
182 J1(a
, b
, c
, d
, e
, 2, 13);
183 J1(e
, a
, b
, c
, d
, 10, 12);
184 J1(d
, e
, a
, b
, c
, 14, 5);
185 J1(c
, d
, e
, a
, b
, 1, 12);
186 J1(b
, c
, d
, e
, a
, 3, 13);
187 J1(a
, b
, c
, d
, e
, 8, 14);
188 J1(e
, a
, b
, c
, d
, 11, 11);
189 J1(d
, e
, a
, b
, c
, 6, 8);
190 J1(c
, d
, e
, a
, b
, 15, 5);
191 J1(b
, c
, d
, e
, a
, 13, 6);
193 /* --- And then the right hand side --- */
195 F2(A
, B
, C
, D
, E
, 5, 8);
196 F2(E
, A
, B
, C
, D
, 14, 9);
197 F2(D
, E
, A
, B
, C
, 7, 9);
198 F2(C
, D
, E
, A
, B
, 0, 11);
199 F2(B
, C
, D
, E
, A
, 9, 13);
200 F2(A
, B
, C
, D
, E
, 2, 15);
201 F2(E
, A
, B
, C
, D
, 11, 15);
202 F2(D
, E
, A
, B
, C
, 4, 5);
203 F2(C
, D
, E
, A
, B
, 13, 7);
204 F2(B
, C
, D
, E
, A
, 6, 7);
205 F2(A
, B
, C
, D
, E
, 15, 8);
206 F2(E
, A
, B
, C
, D
, 8, 11);
207 F2(D
, E
, A
, B
, C
, 1, 14);
208 F2(C
, D
, E
, A
, B
, 10, 14);
209 F2(B
, C
, D
, E
, A
, 3, 12);
210 F2(A
, B
, C
, D
, E
, 12, 6);
212 G2(E
, A
, B
, C
, D
, 6, 9);
213 G2(D
, E
, A
, B
, C
, 11, 13);
214 G2(C
, D
, E
, A
, B
, 3, 15);
215 G2(B
, C
, D
, E
, A
, 7, 7);
216 G2(A
, B
, C
, D
, E
, 0, 12);
217 G2(E
, A
, B
, C
, D
, 13, 8);
218 G2(D
, E
, A
, B
, C
, 5, 9);
219 G2(C
, D
, E
, A
, B
, 10, 11);
220 G2(B
, C
, D
, E
, A
, 14, 7);
221 G2(A
, B
, C
, D
, E
, 15, 7);
222 G2(E
, A
, B
, C
, D
, 8, 12);
223 G2(D
, E
, A
, B
, C
, 12, 7);
224 G2(C
, D
, E
, A
, B
, 4, 6);
225 G2(B
, C
, D
, E
, A
, 9, 15);
226 G2(A
, B
, C
, D
, E
, 1, 13);
227 G2(E
, A
, B
, C
, D
, 2, 11);
229 H2(D
, E
, A
, B
, C
, 15, 9);
230 H2(C
, D
, E
, A
, B
, 5, 7);
231 H2(B
, C
, D
, E
, A
, 1, 15);
232 H2(A
, B
, C
, D
, E
, 3, 11);
233 H2(E
, A
, B
, C
, D
, 7, 8);
234 H2(D
, E
, A
, B
, C
, 14, 6);
235 H2(C
, D
, E
, A
, B
, 6, 6);
236 H2(B
, C
, D
, E
, A
, 9, 14);
237 H2(A
, B
, C
, D
, E
, 11, 12);
238 H2(E
, A
, B
, C
, D
, 8, 13);
239 H2(D
, E
, A
, B
, C
, 12, 5);
240 H2(C
, D
, E
, A
, B
, 2, 14);
241 H2(B
, C
, D
, E
, A
, 10, 13);
242 H2(A
, B
, C
, D
, E
, 0, 13);
243 H2(E
, A
, B
, C
, D
, 4, 7);
244 H2(D
, E
, A
, B
, C
, 13, 5);
246 I2(C
, D
, E
, A
, B
, 8, 15);
247 I2(B
, C
, D
, E
, A
, 6, 5);
248 I2(A
, B
, C
, D
, E
, 4, 8);
249 I2(E
, A
, B
, C
, D
, 1, 11);
250 I2(D
, E
, A
, B
, C
, 3, 14);
251 I2(C
, D
, E
, A
, B
, 11, 14);
252 I2(B
, C
, D
, E
, A
, 15, 6);
253 I2(A
, B
, C
, D
, E
, 0, 14);
254 I2(E
, A
, B
, C
, D
, 5, 6);
255 I2(D
, E
, A
, B
, C
, 12, 9);
256 I2(C
, D
, E
, A
, B
, 2, 12);
257 I2(B
, C
, D
, E
, A
, 13, 9);
258 I2(A
, B
, C
, D
, E
, 9, 12);
259 I2(E
, A
, B
, C
, D
, 7, 5);
260 I2(D
, E
, A
, B
, C
, 10, 15);
261 I2(C
, D
, E
, A
, B
, 14, 8);
263 J2(B
, C
, D
, E
, A
, 12, 8);
264 J2(A
, B
, C
, D
, E
, 15, 5);
265 J2(E
, A
, B
, C
, D
, 10, 12);
266 J2(D
, E
, A
, B
, C
, 4, 9);
267 J2(C
, D
, E
, A
, B
, 1, 12);
268 J2(B
, C
, D
, E
, A
, 5, 5);
269 J2(A
, B
, C
, D
, E
, 8, 14);
270 J2(E
, A
, B
, C
, D
, 7, 6);
271 J2(D
, E
, A
, B
, C
, 6, 8);
272 J2(C
, D
, E
, A
, B
, 2, 13);
273 J2(B
, C
, D
, E
, A
, 13, 6);
274 J2(A
, B
, C
, D
, E
, 14, 5);
275 J2(E
, A
, B
, C
, D
, 0, 15);
276 J2(D
, E
, A
, B
, C
, 3, 13);
277 J2(C
, D
, E
, A
, B
, 9, 11);
278 J2(B
, C
, D
, E
, A
, 11, 11);
280 /* --- Recombine the two halves --- */
284 tmp
= ctx
->b
+ c
+ D
;
285 ctx
->b
= ctx
->c
+ d
+ E
;
286 ctx
->c
= ctx
->d
+ e
+ A
;
287 ctx
->d
= ctx
->e
+ a
+ B
;
288 ctx
->e
= ctx
->a
+ b
+ C
;
293 /* --- @rmd160_init@ --- *
295 * Arguments: @rmd160_ctx *ctx@ = pointer to context block to initialize
299 * Use: Initializes a context block ready for hashing.
302 void rmd160_init(rmd160_ctx
*ctx
)
313 /* --- @rmd160_set@ --- *
315 * Arguments: @rmd160_ctx *ctx@ = pointer to context block
316 * @const void *buf@ = pointer to state buffer
317 * @unsigned long count@ = current count of bytes processed
321 * Use: Initializes a context block from a given state. This is
322 * useful in cases where the initial hash state is meant to be
323 * secret, e.g., for NMAC and HMAC support.
326 void rmd160_set(rmd160_ctx
*ctx
, const void *buf
, unsigned long count
)
328 const octet
*p
= buf
;
329 ctx
->a
= LOAD32_L(p
+ 0);
330 ctx
->b
= LOAD32_L(p
+ 4);
331 ctx
->c
= LOAD32_L(p
+ 8);
332 ctx
->d
= LOAD32_L(p
+ 12);
333 ctx
->e
= LOAD32_L(p
+ 16);
338 /* --- @rmd160_hash@ --- *
340 * Arguments: @rmd160_ctx *ctx@ = pointer to context block
341 * @const void *buf@ = buffer of data to hash
342 * @size_t sz@ = size of buffer to hash
346 * Use: Hashes a buffer of data. The buffer may be of any size and
350 void rmd160_hash(rmd160_ctx
*ctx
, const void *buf
, size_t sz
)
352 HASH_BUFFER(RMD160
, rmd160
, ctx
, buf
, sz
);
355 /* --- @rmd160_done@ --- *
357 * Arguments: @rmd160_ctx *ctx@ = pointer to context block
358 * @void *hash@ = pointer to output buffer
362 * Use: Returns the hash of the data read so far.
365 void rmd160_done(rmd160_ctx
*ctx
, void *hash
)
368 HASH_MD5STRENGTH(RMD160
, rmd160
, ctx
);
369 STORE32_L(p
+ 0, ctx
->a
);
370 STORE32_L(p
+ 4, ctx
->b
);
371 STORE32_L(p
+ 8, ctx
->c
);
372 STORE32_L(p
+ 12, ctx
->d
);
373 STORE32_L(p
+ 16, ctx
->e
);
376 /* --- @rmd160_state@ --- *
378 * Arguments: @rmd160_ctx *ctx@ = pointer to context
379 * @void *state@ = pointer to buffer for current state
381 * Returns: Number of bytes written to the hash function so far.
383 * Use: Returns the current state of the hash function such that
384 * it can be passed to @rmd160_set@.
387 unsigned long rmd160_state(rmd160_ctx
*ctx
, void *state
)
390 STORE32_L(p
+ 0, ctx
->a
);
391 STORE32_L(p
+ 4, ctx
->b
);
392 STORE32_L(p
+ 8, ctx
->c
);
393 STORE32_L(p
+ 12, ctx
->d
);
394 STORE32_L(p
+ 16, ctx
->e
);
398 /* --- Test code --- */
400 HASH_TEST(RMD160
, rmd160
)
402 /*----- That's all, folks -------------------------------------------------*/