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1 | /* |
2 | * Copyright (C) 2007 Michael Niedermayer <michaelni@gmx.at> | |
3 | * Copyright (C) 2013 James Almer | |
4 | * | |
5 | * This file is part of FFmpeg. | |
6 | * | |
7 | * FFmpeg is free software; you can redistribute it and/or | |
8 | * modify it under the terms of the GNU Lesser General Public | |
9 | * License as published by the Free Software Foundation; either | |
10 | * version 2.1 of the License, or (at your option) any later version. | |
11 | * | |
12 | * FFmpeg is distributed in the hope that it will be useful, | |
13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
15 | * Lesser General Public License for more details. | |
16 | * | |
17 | * You should have received a copy of the GNU Lesser General Public | |
18 | * License along with FFmpeg; if not, write to the Free Software | |
19 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | |
20 | */ | |
21 | ||
22 | #include <string.h> | |
23 | ||
24 | #include "attributes.h" | |
25 | #include "avutil.h" | |
26 | #include "bswap.h" | |
27 | #include "intreadwrite.h" | |
28 | #include "ripemd.h" | |
29 | #include "mem.h" | |
30 | ||
31 | /** hash context */ | |
32 | typedef struct AVRIPEMD { | |
33 | uint8_t digest_len; ///< digest length in 32-bit words | |
34 | uint64_t count; ///< number of bytes in buffer | |
35 | uint8_t buffer[64]; ///< 512-bit buffer of input values used in hash updating | |
36 | uint32_t state[10]; ///< current hash value | |
37 | uint8_t ext; ///< extension (0 for 128 and 160, 1 for 256 and 320) | |
38 | /** function used to update hash for 512-bit input block */ | |
39 | void (*transform)(uint32_t *state, const uint8_t buffer[64], int ext); | |
40 | } AVRIPEMD; | |
41 | ||
42 | const int av_ripemd_size = sizeof(AVRIPEMD); | |
43 | ||
44 | struct AVRIPEMD *av_ripemd_alloc(void) | |
45 | { | |
46 | return av_mallocz(sizeof(struct AVRIPEMD)); | |
47 | } | |
48 | ||
49 | static const uint32_t KA[4] = { | |
50 | 0x5a827999, 0x6ed9eba1, 0x8f1bbcdc, 0xa953fd4e | |
51 | }; | |
52 | ||
53 | static const uint32_t KB[4] = { | |
54 | 0x50a28be6, 0x5c4dd124, 0x6d703ef3, 0x7a6d76e9 | |
55 | }; | |
56 | ||
57 | static const int ROTA[80] = { | |
58 | 11, 14, 15, 12, 5, 8, 7 , 9, 11, 13, 14, 15, 6, 7, 9, 8, | |
59 | 7 , 6, 8, 13, 11, 9, 7, 15, 7, 12, 15, 9, 11, 7, 13, 12, | |
60 | 11, 13, 6, 7, 14, 9, 13, 15, 14, 8, 13, 6, 5, 12, 7, 5, | |
61 | 11, 12, 14, 15, 14, 15, 9, 8, 9, 14, 5, 6, 8, 6, 5, 12, | |
62 | 9, 15, 5, 11, 6, 8, 13, 12, 5, 12, 13, 14, 11, 8, 5, 6 | |
63 | }; | |
64 | ||
65 | static const int ROTB[80] = { | |
66 | 8, 9, 9, 11, 13, 15, 15, 5, 7, 7, 8, 11, 14, 14, 12, 6, | |
67 | 9, 13, 15, 7, 12, 8, 9, 11, 7, 7, 12, 7, 6, 15, 13, 11, | |
68 | 9, 7, 15, 11, 8, 6, 6, 14, 12, 13, 5, 14, 13, 13, 7, 5, | |
69 | 15, 5, 8, 11, 14, 14, 6, 14, 6, 9, 12, 9, 12, 5, 15, 8, | |
70 | 8, 5, 12, 9, 12, 5, 14, 6, 8, 13, 6, 5, 15, 13, 11, 11 | |
71 | }; | |
72 | ||
73 | static const int WA[80] = { | |
74 | 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, | |
75 | 7, 4, 13, 1, 10, 6, 15, 3, 12, 0, 9, 5, 2, 14, 11, 8, | |
76 | 3, 10, 14, 4, 9, 15, 8, 1, 2, 7, 0, 6, 13, 11, 5, 12, | |
77 | 1, 9, 11, 10, 0, 8, 12, 4, 13, 3, 7, 15, 14, 5, 6, 2, | |
78 | 4, 0, 5, 9, 7, 12, 2, 10, 14, 1, 3, 8, 11, 6, 15, 13 | |
79 | }; | |
80 | ||
81 | static const int WB[80] = { | |
82 | 5, 14, 7, 0, 9, 2, 11, 4, 13, 6, 15, 8, 1, 10, 3, 12, | |
83 | 6, 11, 3, 7, 0, 13, 5, 10, 14, 15, 8, 12, 4, 9, 1, 2, | |
84 | 15, 5, 1, 3, 7, 14, 6, 9, 11, 8, 12, 2, 10, 0, 4, 13, | |
85 | 8, 6, 4, 1, 3, 11, 15, 0, 5, 12, 2, 13, 9, 7, 10, 14, | |
86 | 12, 15, 10, 4, 1, 5, 8, 7, 6, 2, 13, 14, 0, 3, 9, 11 | |
87 | }; | |
88 | ||
89 | #define rol(value, bits) ((value << bits) | (value >> (32 - bits))) | |
90 | ||
91 | #define SWAP(a,b) if (ext) { t = a; a = b; b = t; } | |
92 | ||
93 | #define ROUND128_0_TO_15(a,b,c,d,e,f,g,h) \ | |
94 | a = rol(a + (( b ^ c ^ d) + block[WA[n]]), ROTA[n]); \ | |
95 | e = rol(e + ((((f ^ g) & h) ^ g) + block[WB[n]] + KB[0]), ROTB[n]); \ | |
96 | n++ | |
97 | ||
98 | #define ROUND128_16_TO_31(a,b,c,d,e,f,g,h) \ | |
99 | a = rol(a + ((((c ^ d) & b) ^ d) + block[WA[n]] + KA[0]), ROTA[n]); \ | |
100 | e = rol(e + (((~g | f) ^ h) + block[WB[n]] + KB[1]), ROTB[n]); \ | |
101 | n++ | |
102 | ||
103 | #define ROUND128_32_TO_47(a,b,c,d,e,f,g,h) \ | |
104 | a = rol(a + (((~c | b) ^ d) + block[WA[n]] + KA[1]), ROTA[n]); \ | |
105 | e = rol(e + ((((g ^ h) & f) ^ h) + block[WB[n]] + KB[2]), ROTB[n]); \ | |
106 | n++ | |
107 | ||
108 | #define ROUND128_48_TO_63(a,b,c,d,e,f,g,h) \ | |
109 | a = rol(a + ((((b ^ c) & d) ^ c) + block[WA[n]] + KA[2]), ROTA[n]); \ | |
110 | e = rol(e + (( f ^ g ^ h) + block[WB[n]]), ROTB[n]); \ | |
111 | n++ | |
112 | ||
113 | static void ripemd128_transform(uint32_t *state, const uint8_t buffer[64], int ext) | |
114 | { | |
115 | uint32_t a, b, c, d, e, f, g, h, t; | |
116 | uint32_t block[16]; | |
117 | int n; | |
118 | ||
119 | if (ext) { | |
120 | a = state[0]; b = state[1]; c = state[2]; d = state[3]; | |
121 | e = state[4]; f = state[5]; g = state[6]; h = state[7]; | |
122 | } else { | |
123 | a = e = state[0]; | |
124 | b = f = state[1]; | |
125 | c = g = state[2]; | |
126 | d = h = state[3]; | |
127 | } | |
128 | ||
129 | for (n = 0; n < 16; n++) | |
130 | block[n] = AV_RL32(buffer + 4 * n); | |
131 | n = 0; | |
132 | ||
133 | #if CONFIG_SMALL | |
134 | for (; n < 16;) { | |
135 | ROUND128_0_TO_15(a,b,c,d,e,f,g,h); | |
136 | t = d; d = c; c = b; b = a; a = t; | |
137 | t = h; h = g; g = f; f = e; e = t; | |
138 | } | |
139 | SWAP(a,e) | |
140 | ||
141 | for (; n < 32;) { | |
142 | ROUND128_16_TO_31(a,b,c,d,e,f,g,h); | |
143 | t = d; d = c; c = b; b = a; a = t; | |
144 | t = h; h = g; g = f; f = e; e = t; | |
145 | } | |
146 | SWAP(b,f) | |
147 | ||
148 | for (; n < 48;) { | |
149 | ROUND128_32_TO_47(a,b,c,d,e,f,g,h); | |
150 | t = d; d = c; c = b; b = a; a = t; | |
151 | t = h; h = g; g = f; f = e; e = t; | |
152 | } | |
153 | SWAP(c,g) | |
154 | ||
155 | for (; n < 64;) { | |
156 | ROUND128_48_TO_63(a,b,c,d,e,f,g,h); | |
157 | t = d; d = c; c = b; b = a; a = t; | |
158 | t = h; h = g; g = f; f = e; e = t; | |
159 | } | |
160 | SWAP(d,h) | |
161 | #else | |
162 | ||
163 | #define R128_0 \ | |
164 | ROUND128_0_TO_15(a,b,c,d,e,f,g,h); \ | |
165 | ROUND128_0_TO_15(d,a,b,c,h,e,f,g); \ | |
166 | ROUND128_0_TO_15(c,d,a,b,g,h,e,f); \ | |
167 | ROUND128_0_TO_15(b,c,d,a,f,g,h,e) | |
168 | ||
169 | R128_0; R128_0; R128_0; R128_0; | |
170 | SWAP(a,e) | |
171 | ||
172 | #define R128_16 \ | |
173 | ROUND128_16_TO_31(a,b,c,d,e,f,g,h); \ | |
174 | ROUND128_16_TO_31(d,a,b,c,h,e,f,g); \ | |
175 | ROUND128_16_TO_31(c,d,a,b,g,h,e,f); \ | |
176 | ROUND128_16_TO_31(b,c,d,a,f,g,h,e) | |
177 | ||
178 | R128_16; R128_16; R128_16; R128_16; | |
179 | SWAP(b,f) | |
180 | ||
181 | #define R128_32 \ | |
182 | ROUND128_32_TO_47(a,b,c,d,e,f,g,h); \ | |
183 | ROUND128_32_TO_47(d,a,b,c,h,e,f,g); \ | |
184 | ROUND128_32_TO_47(c,d,a,b,g,h,e,f); \ | |
185 | ROUND128_32_TO_47(b,c,d,a,f,g,h,e) | |
186 | ||
187 | R128_32; R128_32; R128_32; R128_32; | |
188 | SWAP(c,g) | |
189 | ||
190 | #define R128_48 \ | |
191 | ROUND128_48_TO_63(a,b,c,d,e,f,g,h); \ | |
192 | ROUND128_48_TO_63(d,a,b,c,h,e,f,g); \ | |
193 | ROUND128_48_TO_63(c,d,a,b,g,h,e,f); \ | |
194 | ROUND128_48_TO_63(b,c,d,a,f,g,h,e) | |
195 | ||
196 | R128_48; R128_48; R128_48; R128_48; | |
197 | SWAP(d,h) | |
198 | #endif | |
199 | ||
200 | if (ext) { | |
201 | state[0] += a; state[1] += b; state[2] += c; state[3] += d; | |
202 | state[4] += e; state[5] += f; state[6] += g; state[7] += h; | |
203 | } else { | |
204 | h += c + state[1]; | |
205 | state[1] = state[2] + d + e; | |
206 | state[2] = state[3] + a + f; | |
207 | state[3] = state[0] + b + g; | |
208 | state[0] = h; | |
209 | } | |
210 | } | |
211 | ||
212 | #define ROTATE(x,y) \ | |
213 | x = rol(x, 10); \ | |
214 | y = rol(y, 10); \ | |
215 | n++ | |
216 | ||
217 | #define ROUND160_0_TO_15(a,b,c,d,e,f,g,h,i,j) \ | |
218 | a = rol(a + (( b ^ c ^ d) + block[WA[n]]), ROTA[n]) + e; \ | |
219 | f = rol(f + (((~i | h) ^ g) + block[WB[n]] + KB[0]), ROTB[n]) + j; \ | |
220 | ROTATE(c,h) | |
221 | ||
222 | #define ROUND160_16_TO_31(a,b,c,d,e,f,g,h,i,j) \ | |
223 | a = rol(a + ((((c ^ d) & b) ^ d) + block[WA[n]] + KA[0]), ROTA[n]) + e; \ | |
224 | f = rol(f + ((((g ^ h) & i) ^ h) + block[WB[n]] + KB[1]), ROTB[n]) + j; \ | |
225 | ROTATE(c,h) | |
226 | ||
227 | #define ROUND160_32_TO_47(a,b,c,d,e,f,g,h,i,j) \ | |
228 | a = rol(a + (((~c | b) ^ d) + block[WA[n]] + KA[1]), ROTA[n]) + e; \ | |
229 | f = rol(f + (((~h | g) ^ i) + block[WB[n]] + KB[2]), ROTB[n]) + j; \ | |
230 | ROTATE(c,h) | |
231 | ||
232 | #define ROUND160_48_TO_63(a,b,c,d,e,f,g,h,i,j) \ | |
233 | a = rol(a + ((((b ^ c) & d) ^ c) + block[WA[n]] + KA[2]), ROTA[n]) + e; \ | |
234 | f = rol(f + ((((h ^ i) & g) ^ i) + block[WB[n]] + KB[3]), ROTB[n]) + j; \ | |
235 | ROTATE(c,h) | |
236 | ||
237 | #define ROUND160_64_TO_79(a,b,c,d,e,f,g,h,i,j) \ | |
238 | a = rol(a + (((~d | c) ^ b) + block[WA[n]] + KA[3]), ROTA[n]) + e; \ | |
239 | f = rol(f + (( g ^ h ^ i) + block[WB[n]]), ROTB[n]) + j; \ | |
240 | ROTATE(c,h) | |
241 | ||
242 | static void ripemd160_transform(uint32_t *state, const uint8_t buffer[64], int ext) | |
243 | { | |
244 | uint32_t a, b, c, d, e, f, g, h, i, j, t; | |
245 | uint32_t block[16]; | |
246 | int n; | |
247 | ||
248 | if (ext) { | |
249 | a = state[0]; b = state[1]; c = state[2]; d = state[3]; e = state[4]; | |
250 | f = state[5]; g = state[6]; h = state[7]; i = state[8]; j = state[9]; | |
251 | } else { | |
252 | a = f = state[0]; | |
253 | b = g = state[1]; | |
254 | c = h = state[2]; | |
255 | d = i = state[3]; | |
256 | e = j = state[4]; | |
257 | } | |
258 | ||
259 | for (n = 0; n < 16; n++) | |
260 | block[n] = AV_RL32(buffer + 4 * n); | |
261 | n = 0; | |
262 | ||
263 | #if CONFIG_SMALL | |
264 | for (; n < 16;) { | |
265 | ROUND160_0_TO_15(a,b,c,d,e,f,g,h,i,j); | |
266 | t = e; e = d; d = c; c = b; b = a; a = t; | |
267 | t = j; j = i; i = h; h = g; g = f; f = t; | |
268 | } | |
269 | SWAP(b,g) | |
270 | ||
271 | for (; n < 32;) { | |
272 | ROUND160_16_TO_31(a,b,c,d,e,f,g,h,i,j); | |
273 | t = e; e = d; d = c; c = b; b = a; a = t; | |
274 | t = j; j = i; i = h; h = g; g = f; f = t; | |
275 | } | |
276 | SWAP(d,i) | |
277 | ||
278 | for (; n < 48;) { | |
279 | ROUND160_32_TO_47(a,b,c,d,e,f,g,h,i,j); | |
280 | t = e; e = d; d = c; c = b; b = a; a = t; | |
281 | t = j; j = i; i = h; h = g; g = f; f = t; | |
282 | } | |
283 | SWAP(a,f) | |
284 | ||
285 | for (; n < 64;) { | |
286 | ROUND160_48_TO_63(a,b,c,d,e,f,g,h,i,j); | |
287 | t = e; e = d; d = c; c = b; b = a; a = t; | |
288 | t = j; j = i; i = h; h = g; g = f; f = t; | |
289 | } | |
290 | SWAP(c,h) | |
291 | ||
292 | for (; n < 80;) { | |
293 | ROUND160_64_TO_79(a,b,c,d,e,f,g,h,i,j); | |
294 | t = e; e = d; d = c; c = b; b = a; a = t; | |
295 | t = j; j = i; i = h; h = g; g = f; f = t; | |
296 | } | |
297 | SWAP(e,j) | |
298 | #else | |
299 | ||
300 | #define R160_0 \ | |
301 | ROUND160_0_TO_15(a,b,c,d,e,f,g,h,i,j); \ | |
302 | ROUND160_0_TO_15(e,a,b,c,d,j,f,g,h,i); \ | |
303 | ROUND160_0_TO_15(d,e,a,b,c,i,j,f,g,h); \ | |
304 | ROUND160_0_TO_15(c,d,e,a,b,h,i,j,f,g); \ | |
305 | ROUND160_0_TO_15(b,c,d,e,a,g,h,i,j,f) | |
306 | ||
307 | R160_0; R160_0; R160_0; | |
308 | ROUND160_0_TO_15(a,b,c,d,e,f,g,h,i,j); | |
309 | SWAP(a,f) | |
310 | ||
311 | #define R160_16 \ | |
312 | ROUND160_16_TO_31(e,a,b,c,d,j,f,g,h,i); \ | |
313 | ROUND160_16_TO_31(d,e,a,b,c,i,j,f,g,h); \ | |
314 | ROUND160_16_TO_31(c,d,e,a,b,h,i,j,f,g); \ | |
315 | ROUND160_16_TO_31(b,c,d,e,a,g,h,i,j,f); \ | |
316 | ROUND160_16_TO_31(a,b,c,d,e,f,g,h,i,j) | |
317 | ||
318 | R160_16; R160_16; R160_16; | |
319 | ROUND160_16_TO_31(e,a,b,c,d,j,f,g,h,i); | |
320 | SWAP(b,g) | |
321 | ||
322 | #define R160_32 \ | |
323 | ROUND160_32_TO_47(d,e,a,b,c,i,j,f,g,h); \ | |
324 | ROUND160_32_TO_47(c,d,e,a,b,h,i,j,f,g); \ | |
325 | ROUND160_32_TO_47(b,c,d,e,a,g,h,i,j,f); \ | |
326 | ROUND160_32_TO_47(a,b,c,d,e,f,g,h,i,j); \ | |
327 | ROUND160_32_TO_47(e,a,b,c,d,j,f,g,h,i) | |
328 | ||
329 | R160_32; R160_32; R160_32; | |
330 | ROUND160_32_TO_47(d,e,a,b,c,i,j,f,g,h); | |
331 | SWAP(c,h) | |
332 | ||
333 | #define R160_48 \ | |
334 | ROUND160_48_TO_63(c,d,e,a,b,h,i,j,f,g); \ | |
335 | ROUND160_48_TO_63(b,c,d,e,a,g,h,i,j,f); \ | |
336 | ROUND160_48_TO_63(a,b,c,d,e,f,g,h,i,j); \ | |
337 | ROUND160_48_TO_63(e,a,b,c,d,j,f,g,h,i); \ | |
338 | ROUND160_48_TO_63(d,e,a,b,c,i,j,f,g,h) | |
339 | ||
340 | R160_48; R160_48; R160_48; | |
341 | ROUND160_48_TO_63(c,d,e,a,b,h,i,j,f,g); | |
342 | SWAP(d,i) | |
343 | ||
344 | #define R160_64 \ | |
345 | ROUND160_64_TO_79(b,c,d,e,a,g,h,i,j,f); \ | |
346 | ROUND160_64_TO_79(a,b,c,d,e,f,g,h,i,j); \ | |
347 | ROUND160_64_TO_79(e,a,b,c,d,j,f,g,h,i); \ | |
348 | ROUND160_64_TO_79(d,e,a,b,c,i,j,f,g,h); \ | |
349 | ROUND160_64_TO_79(c,d,e,a,b,h,i,j,f,g) | |
350 | ||
351 | R160_64; R160_64; R160_64; | |
352 | ROUND160_64_TO_79(b,c,d,e,a,g,h,i,j,f); | |
353 | SWAP(e,j) | |
354 | #endif | |
355 | ||
356 | if (ext) { | |
357 | state[0] += a; state[1] += b; state[2] += c; state[3] += d; state[4] += e; | |
358 | state[5] += f; state[6] += g; state[7] += h; state[8] += i; state[9] += j; | |
359 | } else { | |
360 | i += c + state[1]; | |
361 | state[1] = state[2] + d + j; | |
362 | state[2] = state[3] + e + f; | |
363 | state[3] = state[4] + a + g; | |
364 | state[4] = state[0] + b + h; | |
365 | state[0] = i; | |
366 | } | |
367 | } | |
368 | ||
369 | av_cold int av_ripemd_init(AVRIPEMD *ctx, int bits) | |
370 | { | |
371 | ctx->digest_len = bits >> 5; | |
372 | switch (bits) { | |
373 | case 128: // RIPEMD-128 | |
374 | ctx->state[0] = 0x67452301; | |
375 | ctx->state[1] = 0xEFCDAB89; | |
376 | ctx->state[2] = 0x98BADCFE; | |
377 | ctx->state[3] = 0x10325476; | |
378 | ctx->transform = ripemd128_transform; | |
379 | ctx->ext = 0; | |
380 | break; | |
381 | case 160: // RIPEMD-160 | |
382 | ctx->state[0] = 0x67452301; | |
383 | ctx->state[1] = 0xEFCDAB89; | |
384 | ctx->state[2] = 0x98BADCFE; | |
385 | ctx->state[3] = 0x10325476; | |
386 | ctx->state[4] = 0xC3D2E1F0; | |
387 | ctx->transform = ripemd160_transform; | |
388 | ctx->ext = 0; | |
389 | break; | |
390 | case 256: // RIPEMD-256 | |
391 | ctx->state[0] = 0x67452301; | |
392 | ctx->state[1] = 0xEFCDAB89; | |
393 | ctx->state[2] = 0x98BADCFE; | |
394 | ctx->state[3] = 0x10325476; | |
395 | ctx->state[4] = 0x76543210; | |
396 | ctx->state[5] = 0xFEDCBA98; | |
397 | ctx->state[6] = 0x89ABCDEF; | |
398 | ctx->state[7] = 0x01234567; | |
399 | ctx->transform = ripemd128_transform; | |
400 | ctx->ext = 1; | |
401 | break; | |
402 | case 320: // RIPEMD-320 | |
403 | ctx->state[0] = 0x67452301; | |
404 | ctx->state[1] = 0xEFCDAB89; | |
405 | ctx->state[2] = 0x98BADCFE; | |
406 | ctx->state[3] = 0x10325476; | |
407 | ctx->state[4] = 0xC3D2E1F0; | |
408 | ctx->state[5] = 0x76543210; | |
409 | ctx->state[6] = 0xFEDCBA98; | |
410 | ctx->state[7] = 0x89ABCDEF; | |
411 | ctx->state[8] = 0x01234567; | |
412 | ctx->state[9] = 0x3C2D1E0F; | |
413 | ctx->transform = ripemd160_transform; | |
414 | ctx->ext = 1; | |
415 | break; | |
416 | default: | |
417 | return -1; | |
418 | } | |
419 | ctx->count = 0; | |
420 | return 0; | |
421 | } | |
422 | ||
423 | void av_ripemd_update(AVRIPEMD* ctx, const uint8_t* data, unsigned int len) | |
424 | { | |
425 | unsigned int i, j; | |
426 | ||
427 | j = ctx->count & 63; | |
428 | ctx->count += len; | |
429 | #if CONFIG_SMALL | |
430 | for (i = 0; i < len; i++) { | |
431 | ctx->buffer[j++] = data[i]; | |
432 | if (64 == j) { | |
433 | ctx->transform(ctx->state, ctx->buffer, ctx->ext); | |
434 | j = 0; | |
435 | } | |
436 | } | |
437 | #else | |
438 | if ((j + len) > 63) { | |
439 | memcpy(&ctx->buffer[j], data, (i = 64 - j)); | |
440 | ctx->transform(ctx->state, ctx->buffer, ctx->ext); | |
441 | for (; i + 63 < len; i += 64) | |
442 | ctx->transform(ctx->state, &data[i], ctx->ext); | |
443 | j = 0; | |
444 | } else | |
445 | i = 0; | |
446 | memcpy(&ctx->buffer[j], &data[i], len - i); | |
447 | #endif | |
448 | } | |
449 | ||
450 | void av_ripemd_final(AVRIPEMD* ctx, uint8_t *digest) | |
451 | { | |
452 | int i; | |
453 | uint64_t finalcount = av_le2ne64(ctx->count << 3); | |
454 | ||
455 | av_ripemd_update(ctx, "\200", 1); | |
456 | while ((ctx->count & 63) != 56) | |
457 | av_ripemd_update(ctx, "", 1); | |
458 | av_ripemd_update(ctx, (uint8_t *)&finalcount, 8); /* Should cause a transform() */ | |
459 | for (i = 0; i < ctx->digest_len; i++) | |
460 | AV_WL32(digest + i*4, ctx->state[i]); | |
461 | } | |
462 | ||
463 | #ifdef TEST | |
464 | #include <stdio.h> | |
465 | ||
466 | int main(void) | |
467 | { | |
468 | int i, j, k; | |
469 | AVRIPEMD ctx; | |
470 | unsigned char digest[40]; | |
471 | static const int lengths[4] = { 128, 160, 256, 320 }; | |
472 | ||
473 | for (j = 0; j < 4; j++) { | |
474 | printf("Testing RIPEMD-%d\n", lengths[j]); | |
475 | for (k = 0; k < 3; k++) { | |
476 | av_ripemd_init(&ctx, lengths[j]); | |
477 | if (k == 0) | |
478 | av_ripemd_update(&ctx, "abc", 3); | |
479 | else if (k == 1) | |
480 | av_ripemd_update(&ctx, "abcdbcdecdefdefgefghfghighijhijkijkljklmklmnlmnomnopnopq", 56); | |
481 | else | |
482 | for (i = 0; i < 1000*1000; i++) | |
483 | av_ripemd_update(&ctx, "a", 1); | |
484 | av_ripemd_final(&ctx, digest); | |
485 | for (i = 0; i < lengths[j] >> 3; i++) | |
486 | printf("%02X", digest[i]); | |
487 | putchar('\n'); | |
488 | } | |
489 | switch (j) { //test vectors (from ISO:IEC 10118-3 (2004) and http://homes.esat.kuleuven.be/~bosselae/ripemd160.html) | |
490 | case 0: | |
491 | printf("c14a1219 9c66e4ba 84636b0f 69144c77\n" | |
492 | "a1aa0689 d0fafa2d dc22e88b 49133a06\n" | |
493 | "4a7f5723 f954eba1 216c9d8f 6320431f\n"); | |
494 | break; | |
495 | case 1: | |
496 | printf("8eb208f7 e05d987a 9b044a8e 98c6b087 f15a0bfc\n" | |
497 | "12a05338 4a9c0c88 e405a06c 27dcf49a da62eb2b\n" | |
498 | "52783243 c1697bdb e16d37f9 7f68f083 25dc1528\n"); | |
499 | break; | |
500 | case 2: | |
501 | printf("afbd6e22 8b9d8cbb cef5ca2d 03e6dba1 0ac0bc7d cbe4680e 1e42d2e9 75459b65\n" | |
502 | "38430455 83aac6c8 c8d91285 73e7a980 9afb2a0f 34ccc36e a9e72f16 f6368e3f\n" | |
503 | "ac953744 e10e3151 4c150d4d 8d7b6773 42e33399 788296e4 3ae4850c e4f97978\n"); | |
504 | break; | |
505 | case 3: | |
506 | printf("de4c01b3 054f8930 a79d09ae 738e9230 1e5a1708 5beffdc1 b8d11671 3e74f82f a942d64c dbc4682d\n" | |
507 | "d034a795 0cf72202 1ba4b84d f769a5de 2060e259 df4c9bb4 a4268c0e 935bbc74 70a969c9 d072a1ac\n" | |
508 | "bdee37f4 371e2064 6b8b0d86 2dda1629 2ae36f40 965e8c85 09e63d1d bddecc50 3e2b63eb 9245bb66\n"); | |
509 | break; | |
510 | } | |
511 | } | |
512 | ||
513 | return 0; | |
514 | } | |
515 | #endif |