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1 | /* -*-c-*- |
2 | * |
b817bfc6 |
3 | * $Id: rmd160.c,v 1.4 2004/04/08 01:36:15 mdw Exp $ |
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4 | * |
5 | * The RIPEMD-160 message digest function |
6 | * |
7 | * (c) 1998 Straylight/Edgeware |
8 | */ |
9 | |
10 | /*----- Licensing notice --------------------------------------------------* |
11 | * |
12 | * This file is part of Catacomb. |
13 | * |
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. |
18 | * |
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. |
23 | * |
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, |
27 | * MA 02111-1307, USA. |
28 | */ |
29 | |
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30 | /*----- Header files ------------------------------------------------------*/ |
31 | |
32 | #include <mLib/bits.h> |
33 | |
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34 | #include "ghash.h" |
35 | #include "ghash-def.h" |
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36 | #include "hash.h" |
37 | #include "rmd160.h" |
38 | |
39 | /*----- Main code ---------------------------------------------------------*/ |
40 | |
41 | /* --- @rmd160_compress@ --- * |
42 | * |
43 | * Arguments: @rmd160_ctx *ctx@ = pointer to context block |
44 | * @const void *sbuf@ = pointer to buffer of appropriate size |
45 | * |
46 | * Returns: --- |
47 | * |
48 | * Use: RIPEMD-160 compression function. |
49 | */ |
50 | |
51 | void rmd160_compress(rmd160_ctx *ctx, const void *sbuf) |
52 | { |
53 | uint32 a, b, c, d, e; |
54 | uint32 A, B, C, D, E; |
55 | uint32 buf[16]; |
56 | |
57 | /* --- Fetch the chaining variables --- */ |
58 | |
59 | a = A = ctx->a; |
60 | b = B = ctx->b; |
61 | c = C = ctx->c; |
62 | d = D = ctx->d; |
63 | e = E = ctx->e; |
64 | |
65 | /* --- Fetch the buffer contents --- */ |
66 | |
67 | { |
68 | int i; |
69 | const octet *p; |
70 | |
71 | for (i = 0, p = sbuf; i < 16; i++, p += 4) |
72 | buf[i] = LOAD32_L(p); |
73 | } |
74 | |
75 | /* --- Definitions for round functions --- */ |
76 | |
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))) |
82 | |
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); \ |
86 | } while (0) |
87 | |
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) |
93 | |
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) |
99 | |
100 | /* --- First the left hand side --- */ |
101 | |
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); |
118 | |
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); |
135 | |
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); |
152 | |
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); |
169 | |
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); |
186 | |
187 | /* --- And then the right hand side --- */ |
188 | |
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); |
205 | |
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); |
222 | |
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); |
239 | |
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); |
256 | |
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); |
273 | |
274 | /* --- Recombine the two halves --- */ |
275 | |
276 | { |
277 | uint32 |
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; |
283 | ctx->a = tmp; |
284 | } |
285 | } |
286 | |
287 | /* --- @rmd160_init@ --- * |
288 | * |
289 | * Arguments: @rmd160_ctx *ctx@ = pointer to context block to initialize |
290 | * |
291 | * Returns: --- |
292 | * |
293 | * Use: Initializes a context block ready for hashing. |
294 | */ |
295 | |
296 | void rmd160_init(rmd160_ctx *ctx) |
297 | { |
298 | ctx->a = 0x67452301; |
299 | ctx->b = 0xefcdab89; |
300 | ctx->c = 0x98badcfe; |
301 | ctx->d = 0x10325476; |
302 | ctx->e = 0xc3d2e1f0; |
303 | ctx->off = 0; |
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304 | ctx->nl = ctx->nh = 0; |
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305 | } |
306 | |
307 | /* --- @rmd160_set@ --- * |
308 | * |
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 |
312 | * |
313 | * Returns: --- |
314 | * |
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. |
318 | */ |
319 | |
320 | void rmd160_set(rmd160_ctx *ctx, const void *buf, unsigned long count) |
321 | { |
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); |
328 | ctx->off = 0; |
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329 | ctx->nl = U32(count); |
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330 | ctx->nh = U32(((count & ~MASK32) >> 16) >> 16); |
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331 | } |
332 | |
333 | /* --- @rmd160_hash@ --- * |
334 | * |
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 |
338 | * |
339 | * Returns: --- |
340 | * |
341 | * Use: Hashes a buffer of data. The buffer may be of any size and |
342 | * alignment. |
343 | */ |
344 | |
345 | void rmd160_hash(rmd160_ctx *ctx, const void *buf, size_t sz) |
346 | { |
347 | HASH_BUFFER(RMD160, rmd160, ctx, buf, sz); |
348 | } |
349 | |
350 | /* --- @rmd160_done@ --- * |
351 | * |
352 | * Arguments: @rmd160_ctx *ctx@ = pointer to context block |
353 | * @void *hash@ = pointer to output buffer |
354 | * |
355 | * Returns: --- |
356 | * |
357 | * Use: Returns the hash of the data read so far. |
358 | */ |
359 | |
360 | void rmd160_done(rmd160_ctx *ctx, void *hash) |
361 | { |
362 | octet *p = 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); |
369 | } |
370 | |
371 | /* --- @rmd160_state@ --- * |
372 | * |
373 | * Arguments: @rmd160_ctx *ctx@ = pointer to context |
374 | * @void *state@ = pointer to buffer for current state |
375 | * |
376 | * Returns: Number of bytes written to the hash function so far. |
377 | * |
378 | * Use: Returns the current state of the hash function such that |
379 | * it can be passed to @rmd160_set@. |
380 | */ |
381 | |
382 | unsigned long rmd160_state(rmd160_ctx *ctx, void *state) |
383 | { |
384 | octet *p = 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); |
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390 | return (ctx->nl | ((ctx->nh << 16) << 16)); |
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391 | } |
392 | |
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393 | /* --- Generic interface --- */ |
394 | |
395 | GHASH_DEF(RMD160, rmd160) |
396 | |
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397 | /* --- Test code --- */ |
398 | |
399 | HASH_TEST(RMD160, rmd160) |
400 | |
401 | /*----- That's all, folks -------------------------------------------------*/ |