FFmpeg  4.4.4
ripemd.c
Go to the documentation of this file.
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 <stddef.h>
23 #include <string.h>
24 
25 #include "attributes.h"
26 #include "avutil.h"
27 #include "bswap.h"
28 #include "intreadwrite.h"
29 #include "ripemd.h"
30 #include "mem.h"
31 
32 /** hash context */
33 typedef struct AVRIPEMD {
34  uint8_t digest_len; ///< digest length in 32-bit words
35  uint64_t count; ///< number of bytes in buffer
36  uint8_t buffer[64]; ///< 512-bit buffer of input values used in hash updating
37  uint32_t state[10]; ///< current hash value
38  /** function used to update hash for 512-bit input block */
39  void (*transform)(uint32_t *state, const uint8_t buffer[64]);
40 } AVRIPEMD;
41 
42 const int av_ripemd_size = sizeof(AVRIPEMD);
43 
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 ROUND128_0_TO_15(a,b,c,d,e,f,g,h) \
92  a = rol(a + (( b ^ c ^ d) + block[WA[n]]), ROTA[n]); \
93  e = rol(e + ((((f ^ g) & h) ^ g) + block[WB[n]] + KB[0]), ROTB[n]); \
94  n++
95 
96 #define ROUND128_16_TO_31(a,b,c,d,e,f,g,h) \
97  a = rol(a + ((((c ^ d) & b) ^ d) + block[WA[n]] + KA[0]), ROTA[n]); \
98  e = rol(e + (((~g | f) ^ h) + block[WB[n]] + KB[1]), ROTB[n]); \
99  n++
100 
101 #define ROUND128_32_TO_47(a,b,c,d,e,f,g,h) \
102  a = rol(a + (((~c | b) ^ d) + block[WA[n]] + KA[1]), ROTA[n]); \
103  e = rol(e + ((((g ^ h) & f) ^ h) + block[WB[n]] + KB[2]), ROTB[n]); \
104  n++
105 
106 #define ROUND128_48_TO_63(a,b,c,d,e,f,g,h) \
107  a = rol(a + ((((b ^ c) & d) ^ c) + block[WA[n]] + KA[2]), ROTA[n]); \
108  e = rol(e + (( f ^ g ^ h) + block[WB[n]]), ROTB[n]); \
109  n++
110 
111 #define R128_0 \
112  ROUND128_0_TO_15(a,b,c,d,e,f,g,h); \
113  ROUND128_0_TO_15(d,a,b,c,h,e,f,g); \
114  ROUND128_0_TO_15(c,d,a,b,g,h,e,f); \
115  ROUND128_0_TO_15(b,c,d,a,f,g,h,e)
116 
117 #define R128_16 \
118  ROUND128_16_TO_31(a,b,c,d,e,f,g,h); \
119  ROUND128_16_TO_31(d,a,b,c,h,e,f,g); \
120  ROUND128_16_TO_31(c,d,a,b,g,h,e,f); \
121  ROUND128_16_TO_31(b,c,d,a,f,g,h,e)
122 
123 #define R128_32 \
124  ROUND128_32_TO_47(a,b,c,d,e,f,g,h); \
125  ROUND128_32_TO_47(d,a,b,c,h,e,f,g); \
126  ROUND128_32_TO_47(c,d,a,b,g,h,e,f); \
127  ROUND128_32_TO_47(b,c,d,a,f,g,h,e)
128 
129 #define R128_48 \
130  ROUND128_48_TO_63(a,b,c,d,e,f,g,h); \
131  ROUND128_48_TO_63(d,a,b,c,h,e,f,g); \
132  ROUND128_48_TO_63(c,d,a,b,g,h,e,f); \
133  ROUND128_48_TO_63(b,c,d,a,f,g,h,e)
134 
135 static void ripemd128_transform(uint32_t *state, const uint8_t buffer[64])
136 {
137  uint32_t a, b, c, d, e, f, g, h, av_unused t;
138  uint32_t block[16];
139  int n;
140 
141  a = e = state[0];
142  b = f = state[1];
143  c = g = state[2];
144  d = h = state[3];
145 
146  for (n = 0; n < 16; n++)
147  block[n] = AV_RL32(buffer + 4 * n);
148  n = 0;
149 
150 #if CONFIG_SMALL
151  for (; n < 16;) {
152  ROUND128_0_TO_15(a,b,c,d,e,f,g,h);
153  t = d; d = c; c = b; b = a; a = t;
154  t = h; h = g; g = f; f = e; e = t;
155  }
156 
157  for (; n < 32;) {
158  ROUND128_16_TO_31(a,b,c,d,e,f,g,h);
159  t = d; d = c; c = b; b = a; a = t;
160  t = h; h = g; g = f; f = e; e = t;
161  }
162 
163  for (; n < 48;) {
164  ROUND128_32_TO_47(a,b,c,d,e,f,g,h);
165  t = d; d = c; c = b; b = a; a = t;
166  t = h; h = g; g = f; f = e; e = t;
167  }
168 
169  for (; n < 64;) {
170  ROUND128_48_TO_63(a,b,c,d,e,f,g,h);
171  t = d; d = c; c = b; b = a; a = t;
172  t = h; h = g; g = f; f = e; e = t;
173  }
174 #else
175 
177 
179 
181 
183 #endif
184 
185  h += c + state[1];
186  state[1] = state[2] + d + e;
187  state[2] = state[3] + a + f;
188  state[3] = state[0] + b + g;
189  state[0] = h;
190 }
191 
192 static void ripemd256_transform(uint32_t *state, const uint8_t buffer[64])
193 {
194  uint32_t a, b, c, d, e, f, g, h, av_unused t;
195  uint32_t block[16];
196  int n;
197 
198  a = state[0]; b = state[1]; c = state[2]; d = state[3];
199  e = state[4]; f = state[5]; g = state[6]; h = state[7];
200 
201  for (n = 0; n < 16; n++)
202  block[n] = AV_RL32(buffer + 4 * n);
203  n = 0;
204 
205 #if CONFIG_SMALL
206  for (; n < 16;) {
207  ROUND128_0_TO_15(a,b,c,d,e,f,g,h);
208  t = d; d = c; c = b; b = a; a = t;
209  t = h; h = g; g = f; f = e; e = t;
210  }
211  FFSWAP(uint32_t, a, e);
212 
213  for (; n < 32;) {
214  ROUND128_16_TO_31(a,b,c,d,e,f,g,h);
215  t = d; d = c; c = b; b = a; a = t;
216  t = h; h = g; g = f; f = e; e = t;
217  }
218  FFSWAP(uint32_t, b, f);
219 
220  for (; n < 48;) {
221  ROUND128_32_TO_47(a,b,c,d,e,f,g,h);
222  t = d; d = c; c = b; b = a; a = t;
223  t = h; h = g; g = f; f = e; e = t;
224  }
225  FFSWAP(uint32_t, c, g);
226 
227  for (; n < 64;) {
228  ROUND128_48_TO_63(a,b,c,d,e,f,g,h);
229  t = d; d = c; c = b; b = a; a = t;
230  t = h; h = g; g = f; f = e; e = t;
231  }
232  FFSWAP(uint32_t, d, h);
233 #else
234 
236  FFSWAP(uint32_t, a, e);
237 
239  FFSWAP(uint32_t, b, f);
240 
242  FFSWAP(uint32_t, c, g);
243 
245  FFSWAP(uint32_t, d, h);
246 #endif
247 
248  state[0] += a; state[1] += b; state[2] += c; state[3] += d;
249  state[4] += e; state[5] += f; state[6] += g; state[7] += h;
250 }
251 
252 #define ROTATE(x,y) \
253  x = rol(x, 10); \
254  y = rol(y, 10); \
255  n++
256 
257 #define ROUND160_0_TO_15(a,b,c,d,e,f,g,h,i,j) \
258  a = rol(a + (( b ^ c ^ d) + block[WA[n]]), ROTA[n]) + e; \
259  f = rol(f + (((~i | h) ^ g) + block[WB[n]] + KB[0]), ROTB[n]) + j; \
260  ROTATE(c,h)
261 
262 #define ROUND160_16_TO_31(a,b,c,d,e,f,g,h,i,j) \
263  a = rol(a + ((((c ^ d) & b) ^ d) + block[WA[n]] + KA[0]), ROTA[n]) + e; \
264  f = rol(f + ((((g ^ h) & i) ^ h) + block[WB[n]] + KB[1]), ROTB[n]) + j; \
265  ROTATE(c,h)
266 
267 #define ROUND160_32_TO_47(a,b,c,d,e,f,g,h,i,j) \
268  a = rol(a + (((~c | b) ^ d) + block[WA[n]] + KA[1]), ROTA[n]) + e; \
269  f = rol(f + (((~h | g) ^ i) + block[WB[n]] + KB[2]), ROTB[n]) + j; \
270  ROTATE(c,h)
271 
272 #define ROUND160_48_TO_63(a,b,c,d,e,f,g,h,i,j) \
273  a = rol(a + ((((b ^ c) & d) ^ c) + block[WA[n]] + KA[2]), ROTA[n]) + e; \
274  f = rol(f + ((((h ^ i) & g) ^ i) + block[WB[n]] + KB[3]), ROTB[n]) + j; \
275  ROTATE(c,h)
276 
277 #define ROUND160_64_TO_79(a,b,c,d,e,f,g,h,i,j) \
278  a = rol(a + (((~d | c) ^ b) + block[WA[n]] + KA[3]), ROTA[n]) + e; \
279  f = rol(f + (( g ^ h ^ i) + block[WB[n]]), ROTB[n]) + j; \
280  ROTATE(c,h)
281 
282 #define R160_0 \
283  ROUND160_0_TO_15(a,b,c,d,e,f,g,h,i,j); \
284  ROUND160_0_TO_15(e,a,b,c,d,j,f,g,h,i); \
285  ROUND160_0_TO_15(d,e,a,b,c,i,j,f,g,h); \
286  ROUND160_0_TO_15(c,d,e,a,b,h,i,j,f,g); \
287  ROUND160_0_TO_15(b,c,d,e,a,g,h,i,j,f)
288 
289 #define R160_16 \
290  ROUND160_16_TO_31(e,a,b,c,d,j,f,g,h,i); \
291  ROUND160_16_TO_31(d,e,a,b,c,i,j,f,g,h); \
292  ROUND160_16_TO_31(c,d,e,a,b,h,i,j,f,g); \
293  ROUND160_16_TO_31(b,c,d,e,a,g,h,i,j,f); \
294  ROUND160_16_TO_31(a,b,c,d,e,f,g,h,i,j)
295 
296 #define R160_32 \
297  ROUND160_32_TO_47(d,e,a,b,c,i,j,f,g,h); \
298  ROUND160_32_TO_47(c,d,e,a,b,h,i,j,f,g); \
299  ROUND160_32_TO_47(b,c,d,e,a,g,h,i,j,f); \
300  ROUND160_32_TO_47(a,b,c,d,e,f,g,h,i,j); \
301  ROUND160_32_TO_47(e,a,b,c,d,j,f,g,h,i)
302 
303 #define R160_48 \
304  ROUND160_48_TO_63(c,d,e,a,b,h,i,j,f,g); \
305  ROUND160_48_TO_63(b,c,d,e,a,g,h,i,j,f); \
306  ROUND160_48_TO_63(a,b,c,d,e,f,g,h,i,j); \
307  ROUND160_48_TO_63(e,a,b,c,d,j,f,g,h,i); \
308  ROUND160_48_TO_63(d,e,a,b,c,i,j,f,g,h)
309 
310 #define R160_64 \
311  ROUND160_64_TO_79(b,c,d,e,a,g,h,i,j,f); \
312  ROUND160_64_TO_79(a,b,c,d,e,f,g,h,i,j); \
313  ROUND160_64_TO_79(e,a,b,c,d,j,f,g,h,i); \
314  ROUND160_64_TO_79(d,e,a,b,c,i,j,f,g,h); \
315  ROUND160_64_TO_79(c,d,e,a,b,h,i,j,f,g)
316 
317 static void ripemd160_transform(uint32_t *state, const uint8_t buffer[64])
318 {
319  uint32_t a, b, c, d, e, f, g, h, i, j, av_unused t;
320  uint32_t block[16];
321  int n;
322 
323  a = f = state[0];
324  b = g = state[1];
325  c = h = state[2];
326  d = i = state[3];
327  e = j = state[4];
328 
329  for (n = 0; n < 16; n++)
330  block[n] = AV_RL32(buffer + 4 * n);
331  n = 0;
332 
333 #if CONFIG_SMALL
334  for (; n < 16;) {
335  ROUND160_0_TO_15(a,b,c,d,e,f,g,h,i,j);
336  t = e; e = d; d = c; c = b; b = a; a = t;
337  t = j; j = i; i = h; h = g; g = f; f = t;
338  }
339 
340  for (; n < 32;) {
341  ROUND160_16_TO_31(a,b,c,d,e,f,g,h,i,j);
342  t = e; e = d; d = c; c = b; b = a; a = t;
343  t = j; j = i; i = h; h = g; g = f; f = t;
344  }
345 
346  for (; n < 48;) {
347  ROUND160_32_TO_47(a,b,c,d,e,f,g,h,i,j);
348  t = e; e = d; d = c; c = b; b = a; a = t;
349  t = j; j = i; i = h; h = g; g = f; f = t;
350  }
351 
352  for (; n < 64;) {
353  ROUND160_48_TO_63(a,b,c,d,e,f,g,h,i,j);
354  t = e; e = d; d = c; c = b; b = a; a = t;
355  t = j; j = i; i = h; h = g; g = f; f = t;
356  }
357 
358  for (; n < 80;) {
359  ROUND160_64_TO_79(a,b,c,d,e,f,g,h,i,j);
360  t = e; e = d; d = c; c = b; b = a; a = t;
361  t = j; j = i; i = h; h = g; g = f; f = t;
362  }
363 #else
364 
365  R160_0; R160_0; R160_0;
366  ROUND160_0_TO_15(a,b,c,d,e,f,g,h,i,j);
367 
369  ROUND160_16_TO_31(e,a,b,c,d,j,f,g,h,i);
370 
372  ROUND160_32_TO_47(d,e,a,b,c,i,j,f,g,h);
373 
375  ROUND160_48_TO_63(c,d,e,a,b,h,i,j,f,g);
376 
378  ROUND160_64_TO_79(b,c,d,e,a,g,h,i,j,f);
379 #endif
380 
381  i += c + state[1];
382  state[1] = state[2] + d + j;
383  state[2] = state[3] + e + f;
384  state[3] = state[4] + a + g;
385  state[4] = state[0] + b + h;
386  state[0] = i;
387 }
388 
389 static void ripemd320_transform(uint32_t *state, const uint8_t buffer[64])
390 {
391  uint32_t a, b, c, d, e, f, g, h, i, j, av_unused t;
392  uint32_t block[16];
393  int n;
394 
395  a = state[0]; b = state[1]; c = state[2]; d = state[3]; e = state[4];
396  f = state[5]; g = state[6]; h = state[7]; i = state[8]; j = state[9];
397 
398  for (n = 0; n < 16; n++)
399  block[n] = AV_RL32(buffer + 4 * n);
400  n = 0;
401 
402 #if CONFIG_SMALL
403  for (; n < 16;) {
404  ROUND160_0_TO_15(a,b,c,d,e,f,g,h,i,j);
405  t = e; e = d; d = c; c = b; b = a; a = t;
406  t = j; j = i; i = h; h = g; g = f; f = t;
407  }
408  FFSWAP(uint32_t, b, g);
409 
410  for (; n < 32;) {
411  ROUND160_16_TO_31(a,b,c,d,e,f,g,h,i,j);
412  t = e; e = d; d = c; c = b; b = a; a = t;
413  t = j; j = i; i = h; h = g; g = f; f = t;
414  }
415  FFSWAP(uint32_t, d, i);
416 
417  for (; n < 48;) {
418  ROUND160_32_TO_47(a,b,c,d,e,f,g,h,i,j);
419  t = e; e = d; d = c; c = b; b = a; a = t;
420  t = j; j = i; i = h; h = g; g = f; f = t;
421  }
422  FFSWAP(uint32_t, a, f);
423 
424  for (; n < 64;) {
425  ROUND160_48_TO_63(a,b,c,d,e,f,g,h,i,j);
426  t = e; e = d; d = c; c = b; b = a; a = t;
427  t = j; j = i; i = h; h = g; g = f; f = t;
428  }
429  FFSWAP(uint32_t, c, h);
430 
431  for (; n < 80;) {
432  ROUND160_64_TO_79(a,b,c,d,e,f,g,h,i,j);
433  t = e; e = d; d = c; c = b; b = a; a = t;
434  t = j; j = i; i = h; h = g; g = f; f = t;
435  }
436  FFSWAP(uint32_t, e, j);
437 #else
438 
439  R160_0; R160_0; R160_0;
440  ROUND160_0_TO_15(a,b,c,d,e,f,g,h,i,j);
441  FFSWAP(uint32_t, a, f);
442 
444  ROUND160_16_TO_31(e,a,b,c,d,j,f,g,h,i);
445  FFSWAP(uint32_t, b, g);
446 
448  ROUND160_32_TO_47(d,e,a,b,c,i,j,f,g,h);
449  FFSWAP(uint32_t, c, h);
450 
452  ROUND160_48_TO_63(c,d,e,a,b,h,i,j,f,g);
453  FFSWAP(uint32_t, d, i);
454 
456  ROUND160_64_TO_79(b,c,d,e,a,g,h,i,j,f);
457  FFSWAP(uint32_t, e, j);
458 #endif
459 
460  state[0] += a; state[1] += b; state[2] += c; state[3] += d; state[4] += e;
461  state[5] += f; state[6] += g; state[7] += h; state[8] += i; state[9] += j;
462 }
463 
465 {
466  ctx->digest_len = bits >> 5;
467  switch (bits) {
468  case 128: // RIPEMD-128
469  ctx->state[0] = 0x67452301;
470  ctx->state[1] = 0xEFCDAB89;
471  ctx->state[2] = 0x98BADCFE;
472  ctx->state[3] = 0x10325476;
473  ctx->transform = ripemd128_transform;
474  break;
475  case 160: // RIPEMD-160
476  ctx->state[0] = 0x67452301;
477  ctx->state[1] = 0xEFCDAB89;
478  ctx->state[2] = 0x98BADCFE;
479  ctx->state[3] = 0x10325476;
480  ctx->state[4] = 0xC3D2E1F0;
481  ctx->transform = ripemd160_transform;
482  break;
483  case 256: // RIPEMD-256
484  ctx->state[0] = 0x67452301;
485  ctx->state[1] = 0xEFCDAB89;
486  ctx->state[2] = 0x98BADCFE;
487  ctx->state[3] = 0x10325476;
488  ctx->state[4] = 0x76543210;
489  ctx->state[5] = 0xFEDCBA98;
490  ctx->state[6] = 0x89ABCDEF;
491  ctx->state[7] = 0x01234567;
492  ctx->transform = ripemd256_transform;
493  break;
494  case 320: // RIPEMD-320
495  ctx->state[0] = 0x67452301;
496  ctx->state[1] = 0xEFCDAB89;
497  ctx->state[2] = 0x98BADCFE;
498  ctx->state[3] = 0x10325476;
499  ctx->state[4] = 0xC3D2E1F0;
500  ctx->state[5] = 0x76543210;
501  ctx->state[6] = 0xFEDCBA98;
502  ctx->state[7] = 0x89ABCDEF;
503  ctx->state[8] = 0x01234567;
504  ctx->state[9] = 0x3C2D1E0F;
505  ctx->transform = ripemd320_transform;
506  break;
507  default:
508  return AVERROR(EINVAL);
509  }
510  ctx->count = 0;
511  return 0;
512 }
513 
514 #if FF_API_CRYPTO_SIZE_T
515 void av_ripemd_update(AVRIPEMD* ctx, const uint8_t* data, unsigned int len)
516 #else
517 void av_ripemd_update(AVRIPEMD* ctx, const uint8_t* data, size_t len)
518 #endif
519 {
520  unsigned int i, j;
521 
522  j = ctx->count & 63;
523  ctx->count += len;
524 #if CONFIG_SMALL
525  for (i = 0; i < len; i++) {
526  ctx->buffer[j++] = data[i];
527  if (64 == j) {
528  ctx->transform(ctx->state, ctx->buffer);
529  j = 0;
530  }
531  }
532 #else
533  if ((j + len) > 63) {
534  memcpy(&ctx->buffer[j], data, (i = 64 - j));
535  ctx->transform(ctx->state, ctx->buffer);
536  for (; i + 63 < len; i += 64)
537  ctx->transform(ctx->state, &data[i]);
538  j = 0;
539  } else
540  i = 0;
541  memcpy(&ctx->buffer[j], &data[i], len - i);
542 #endif
543 }
544 
546 {
547  int i;
548  uint64_t finalcount = av_le2ne64(ctx->count << 3);
549 
550  av_ripemd_update(ctx, "\200", 1);
551  while ((ctx->count & 63) != 56)
552  av_ripemd_update(ctx, "", 1);
553  av_ripemd_update(ctx, (uint8_t *)&finalcount, 8); /* Should cause a transform() */
554  for (i = 0; i < ctx->digest_len; i++)
555  AV_WL32(digest + i*4, ctx->state[i]);
556 }
Macro definitions for various function/variable attributes.
#define av_unused
Definition: attributes.h:131
#define av_cold
Definition: attributes.h:88
uint8_t
#define AV_RL32
Definition: intreadwrite.h:146
Convenience header that includes libavutil's core.
#define av_le2ne64(x)
Definition: bswap.h:97
#define f(width, name)
Definition: cbs_vp9.c:255
static struct @321 state
#define FFSWAP(type, a, b)
Definition: common.h:108
#define AVERROR(e)
Definition: error.h:43
void * av_mallocz(size_t size)
Allocate a memory block with alignment suitable for all memory accesses (including vectors if availab...
Definition: mem.c:237
void av_ripemd_final(AVRIPEMD *ctx, uint8_t *digest)
Finish hashing and output digest value.
Definition: ripemd.c:545
av_cold int av_ripemd_init(AVRIPEMD *ctx, int bits)
Initialize RIPEMD hashing.
Definition: ripemd.c:464
void av_ripemd_update(AVRIPEMD *ctx, const uint8_t *data, unsigned int len)
Update hash value.
Definition: ripemd.c:515
struct AVRIPEMD * av_ripemd_alloc(void)
Allocate an AVRIPEMD context.
Definition: ripemd.c:44
const int av_ripemd_size
Definition: ripemd.c:42
int i
Definition: input.c:407
#define AV_WL32(p, v)
Definition: intreadwrite.h:426
Memory handling functions.
const char data[16]
Definition: mxf.c:142
typedef void(RENAME(mix_any_func_type))
static const int ROTB[80]
Definition: ripemd.c:65
#define R128_16
Definition: ripemd.c:117
static void ripemd160_transform(uint32_t *state, const uint8_t buffer[64])
Definition: ripemd.c:317
#define ROUND160_16_TO_31(a, b, c, d, e, f, g, h, i, j)
Definition: ripemd.c:262
#define R160_0
Definition: ripemd.c:282
#define ROUND160_0_TO_15(a, b, c, d, e, f, g, h, i, j)
Definition: ripemd.c:257
#define R160_48
Definition: ripemd.c:303
#define ROUND128_32_TO_47(a, b, c, d, e, f, g, h)
Definition: ripemd.c:101
static void ripemd128_transform(uint32_t *state, const uint8_t buffer[64])
Definition: ripemd.c:135
#define R128_32
Definition: ripemd.c:123
#define ROUND128_48_TO_63(a, b, c, d, e, f, g, h)
Definition: ripemd.c:106
#define R128_0
Definition: ripemd.c:111
#define ROUND160_32_TO_47(a, b, c, d, e, f, g, h, i, j)
Definition: ripemd.c:267
static void ripemd320_transform(uint32_t *state, const uint8_t buffer[64])
Definition: ripemd.c:389
static const uint32_t KB[4]
Definition: ripemd.c:53
#define ROUND128_16_TO_31(a, b, c, d, e, f, g, h)
Definition: ripemd.c:96
static const int ROTA[80]
Definition: ripemd.c:57
static const uint32_t KA[4]
Definition: ripemd.c:49
#define R160_32
Definition: ripemd.c:296
#define R160_16
Definition: ripemd.c:289
static void ripemd256_transform(uint32_t *state, const uint8_t buffer[64])
Definition: ripemd.c:192
static const int WB[80]
Definition: ripemd.c:81
#define R128_48
Definition: ripemd.c:129
static const int WA[80]
Definition: ripemd.c:73
#define ROUND128_0_TO_15(a, b, c, d, e, f, g, h)
Definition: ripemd.c:91
#define ROUND160_48_TO_63(a, b, c, d, e, f, g, h, i, j)
Definition: ripemd.c:272
#define R160_64
Definition: ripemd.c:310
#define ROUND160_64_TO_79(a, b, c, d, e, f, g, h, i, j)
Definition: ripemd.c:277
Public header for RIPEMD hash function implementation.
static char buffer[20]
Definition: seek.c:32
hash context
Definition: ripemd.c:33
uint8_t digest_len
digest length in 32-bit words
Definition: ripemd.c:34
uint32_t state[10]
current hash value
Definition: ripemd.c:37
uint64_t count
number of bytes in buffer
Definition: ripemd.c:35
uint8_t buffer[64]
512-bit buffer of input values used in hash updating
Definition: ripemd.c:36
void(* transform)(uint32_t *state, const uint8_t buffer[64])
function used to update hash for 512-bit input block
Definition: ripemd.c:39
static int16_t block[64]
Definition: dct.c:116
AVFormatContext * ctx
Definition: movenc.c:48
const char * b
Definition: vf_curves.c:118
const char * g
Definition: vf_curves.c:117
int len
uint8_t bits
Definition: vp3data.h:141
static double c[64]
byte swapping routines