LCOV - code coverage report
Current view: top level - src/libavutil - ripemd.c (source / functions) Hit Total Coverage
Test: coverage.info Lines: 147 149 98.7 %
Date: 2017-01-21 09:32:20 Functions: 8 8 100.0 %

          Line data    Source code
       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             :     /** function used to update hash for 512-bit input block */
      38             :     void     (*transform)(uint32_t *state, const uint8_t buffer[64]);
      39             : } AVRIPEMD;
      40             : 
      41             : const int av_ripemd_size = sizeof(AVRIPEMD);
      42             : 
      43           5 : struct AVRIPEMD *av_ripemd_alloc(void)
      44             : {
      45           5 :     return av_mallocz(sizeof(struct AVRIPEMD));
      46             : }
      47             : 
      48             : static const uint32_t KA[4] = {
      49             :     0x5a827999, 0x6ed9eba1, 0x8f1bbcdc, 0xa953fd4e
      50             : };
      51             : 
      52             : static const uint32_t KB[4] = {
      53             :     0x50a28be6, 0x5c4dd124, 0x6d703ef3, 0x7a6d76e9
      54             : };
      55             : 
      56             : static const int ROTA[80] = {
      57             :     11, 14, 15, 12,  5,  8,  7 , 9, 11, 13, 14, 15,  6,  7,  9,  8,
      58             :      7 , 6,  8, 13, 11,  9,  7, 15,  7, 12, 15,  9, 11,  7, 13, 12,
      59             :     11, 13,  6,  7, 14,  9, 13, 15, 14,  8, 13,  6,  5, 12,  7,  5,
      60             :     11, 12, 14, 15, 14, 15,  9,  8,  9, 14,  5,  6,  8,  6,  5, 12,
      61             :      9, 15,  5, 11,  6,  8, 13, 12,  5, 12, 13, 14, 11,  8,  5,  6
      62             : };
      63             : 
      64             : static const int ROTB[80] = {
      65             :      8,  9,  9, 11, 13, 15, 15,  5,  7,  7,  8, 11, 14, 14, 12,  6,
      66             :      9, 13, 15,  7, 12,  8,  9, 11,  7,  7, 12,  7,  6, 15, 13, 11,
      67             :      9,  7, 15, 11,  8,  6,  6, 14, 12, 13,  5, 14, 13, 13,  7,  5,
      68             :     15,  5,  8, 11, 14, 14,  6, 14,  6,  9, 12,  9, 12,  5, 15,  8,
      69             :      8,  5, 12,  9, 12,  5, 14,  6,  8, 13,  6,  5, 15, 13, 11, 11
      70             : };
      71             : 
      72             : static const int WA[80] = {
      73             :      0,  1,  2,  3,  4,  5,  6,  7,  8,  9, 10, 11, 12, 13, 14, 15,
      74             :      7,  4, 13,  1, 10,  6, 15,  3, 12,  0,  9,  5,  2, 14, 11,  8,
      75             :      3, 10, 14,  4,  9, 15,  8,  1,  2,  7,  0,  6, 13, 11,  5, 12,
      76             :      1,  9, 11, 10,  0,  8, 12,  4, 13,  3,  7, 15, 14,  5,  6,  2,
      77             :      4,  0,  5,  9,  7, 12,  2, 10, 14,  1,  3,  8, 11,  6, 15, 13
      78             : };
      79             : 
      80             : static const int WB[80] = {
      81             :      5, 14,  7,  0,  9,  2, 11,  4, 13,  6, 15,  8,  1, 10,  3, 12,
      82             :      6, 11,  3,  7,  0, 13,  5, 10, 14, 15,  8, 12,  4,  9,  1,  2,
      83             :     15,  5,  1,  3,  7, 14,  6,  9, 11,  8, 12,  2, 10,  0,  4, 13,
      84             :      8,  6,  4,  1,  3, 11, 15,  0,  5, 12,  2, 13,  9,  7, 10, 14,
      85             :     12, 15, 10,  4,  1,  5,  8,  7,  6,  2, 13, 14,  0,  3,  9, 11
      86             : };
      87             : 
      88             : #define rol(value, bits) (((value) << (bits)) | ((value) >> (32 - (bits))))
      89             : 
      90             : #define ROUND128_0_TO_15(a,b,c,d,e,f,g,h)                               \
      91             :     a = rol(a + ((  b ^ c  ^ d)      + block[WA[n]]),         ROTA[n]); \
      92             :     e = rol(e + ((((f ^ g) & h) ^ g) + block[WB[n]] + KB[0]), ROTB[n]); \
      93             :     n++
      94             : 
      95             : #define ROUND128_16_TO_31(a,b,c,d,e,f,g,h)                              \
      96             :     a = rol(a + ((((c ^ d) & b) ^ d) + block[WA[n]] + KA[0]), ROTA[n]); \
      97             :     e = rol(e + (((~g | f) ^ h)      + block[WB[n]] + KB[1]), ROTB[n]); \
      98             :     n++
      99             : 
     100             : #define ROUND128_32_TO_47(a,b,c,d,e,f,g,h)                              \
     101             :     a = rol(a + (((~c | b) ^ d)      + block[WA[n]] + KA[1]), ROTA[n]); \
     102             :     e = rol(e + ((((g ^ h) & f) ^ h) + block[WB[n]] + KB[2]), ROTB[n]); \
     103             :     n++
     104             : 
     105             : #define ROUND128_48_TO_63(a,b,c,d,e,f,g,h)                              \
     106             :     a = rol(a + ((((b ^ c) & d) ^ c) + block[WA[n]] + KA[2]), ROTA[n]); \
     107             :     e = rol(e + ((  f ^ g  ^ h)      + block[WB[n]]),         ROTB[n]); \
     108             :     n++
     109             : 
     110             : #define R128_0                          \
     111             :     ROUND128_0_TO_15(a,b,c,d,e,f,g,h);  \
     112             :     ROUND128_0_TO_15(d,a,b,c,h,e,f,g);  \
     113             :     ROUND128_0_TO_15(c,d,a,b,g,h,e,f);  \
     114             :     ROUND128_0_TO_15(b,c,d,a,f,g,h,e)
     115             : 
     116             : #define R128_16                         \
     117             :     ROUND128_16_TO_31(a,b,c,d,e,f,g,h); \
     118             :     ROUND128_16_TO_31(d,a,b,c,h,e,f,g); \
     119             :     ROUND128_16_TO_31(c,d,a,b,g,h,e,f); \
     120             :     ROUND128_16_TO_31(b,c,d,a,f,g,h,e)
     121             : 
     122             : #define R128_32                         \
     123             :     ROUND128_32_TO_47(a,b,c,d,e,f,g,h); \
     124             :     ROUND128_32_TO_47(d,a,b,c,h,e,f,g); \
     125             :     ROUND128_32_TO_47(c,d,a,b,g,h,e,f); \
     126             :     ROUND128_32_TO_47(b,c,d,a,f,g,h,e)
     127             : 
     128             : #define R128_48                         \
     129             :     ROUND128_48_TO_63(a,b,c,d,e,f,g,h); \
     130             :     ROUND128_48_TO_63(d,a,b,c,h,e,f,g); \
     131             :     ROUND128_48_TO_63(c,d,a,b,g,h,e,f); \
     132             :     ROUND128_48_TO_63(b,c,d,a,f,g,h,e)
     133             : 
     134       15635 : static void ripemd128_transform(uint32_t *state, const uint8_t buffer[64])
     135             : {
     136             :     uint32_t a, b, c, d, e, f, g, h, av_unused t;
     137             :     uint32_t block[16];
     138             :     int n;
     139             : 
     140       15635 :     a = e = state[0];
     141       15635 :     b = f = state[1];
     142       15635 :     c = g = state[2];
     143       15635 :     d = h = state[3];
     144             : 
     145      265795 :     for (n = 0; n < 16; n++)
     146      250160 :         block[n] = AV_RL32(buffer + 4 * n);
     147       15635 :     n = 0;
     148             : 
     149             : #if CONFIG_SMALL
     150             :     for (; n < 16;) {
     151             :         ROUND128_0_TO_15(a,b,c,d,e,f,g,h);
     152             :         t = d; d = c; c = b; b = a; a = t;
     153             :         t = h; h = g; g = f; f = e; e = t;
     154             :     }
     155             : 
     156             :     for (; n < 32;) {
     157             :         ROUND128_16_TO_31(a,b,c,d,e,f,g,h);
     158             :         t = d; d = c; c = b; b = a; a = t;
     159             :         t = h; h = g; g = f; f = e; e = t;
     160             :     }
     161             : 
     162             :     for (; n < 48;) {
     163             :         ROUND128_32_TO_47(a,b,c,d,e,f,g,h);
     164             :         t = d; d = c; c = b; b = a; a = t;
     165             :         t = h; h = g; g = f; f = e; e = t;
     166             :     }
     167             : 
     168             :     for (; n < 64;) {
     169             :         ROUND128_48_TO_63(a,b,c,d,e,f,g,h);
     170             :         t = d; d = c; c = b; b = a; a = t;
     171             :         t = h; h = g; g = f; f = e; e = t;
     172             :     }
     173             : #else
     174             : 
     175       15635 :     R128_0; R128_0; R128_0; R128_0;
     176             : 
     177       15635 :     R128_16; R128_16; R128_16; R128_16;
     178             : 
     179       15635 :     R128_32; R128_32; R128_32; R128_32;
     180             : 
     181       15635 :     R128_48; R128_48; R128_48; R128_48;
     182             : #endif
     183             : 
     184       15635 :     h += c + state[1];
     185       15635 :     state[1] = state[2] + d + e;
     186       15635 :     state[2] = state[3] + a + f;
     187       15635 :     state[3] = state[0] + b + g;
     188       15635 :     state[0] = h;
     189       15635 : }
     190             : 
     191       15635 : static void ripemd256_transform(uint32_t *state, const uint8_t buffer[64])
     192             : {
     193             :     uint32_t a, b, c, d, e, f, g, h, av_unused t;
     194             :     uint32_t block[16];
     195             :     int n;
     196             : 
     197       15635 :     a = state[0]; b = state[1]; c = state[2]; d = state[3];
     198       15635 :     e = state[4]; f = state[5]; g = state[6]; h = state[7];
     199             : 
     200      265795 :     for (n = 0; n < 16; n++)
     201      250160 :         block[n] = AV_RL32(buffer + 4 * n);
     202       15635 :     n = 0;
     203             : 
     204             : #if CONFIG_SMALL
     205             :     for (; n < 16;) {
     206             :         ROUND128_0_TO_15(a,b,c,d,e,f,g,h);
     207             :         t = d; d = c; c = b; b = a; a = t;
     208             :         t = h; h = g; g = f; f = e; e = t;
     209             :     }
     210             :     FFSWAP(uint32_t, a, e);
     211             : 
     212             :     for (; n < 32;) {
     213             :         ROUND128_16_TO_31(a,b,c,d,e,f,g,h);
     214             :         t = d; d = c; c = b; b = a; a = t;
     215             :         t = h; h = g; g = f; f = e; e = t;
     216             :     }
     217             :     FFSWAP(uint32_t, b, f);
     218             : 
     219             :     for (; n < 48;) {
     220             :         ROUND128_32_TO_47(a,b,c,d,e,f,g,h);
     221             :         t = d; d = c; c = b; b = a; a = t;
     222             :         t = h; h = g; g = f; f = e; e = t;
     223             :     }
     224             :     FFSWAP(uint32_t, c, g);
     225             : 
     226             :     for (; n < 64;) {
     227             :         ROUND128_48_TO_63(a,b,c,d,e,f,g,h);
     228             :         t = d; d = c; c = b; b = a; a = t;
     229             :         t = h; h = g; g = f; f = e; e = t;
     230             :     }
     231             :     FFSWAP(uint32_t, d, h);
     232             : #else
     233             : 
     234       15635 :     R128_0; R128_0; R128_0; R128_0;
     235       15635 :     FFSWAP(uint32_t, a, e);
     236             : 
     237       15635 :     R128_16; R128_16; R128_16; R128_16;
     238       15635 :     FFSWAP(uint32_t, b, f);
     239             : 
     240       15635 :     R128_32; R128_32; R128_32; R128_32;
     241       15635 :     FFSWAP(uint32_t, c, g);
     242             : 
     243       15635 :     R128_48; R128_48; R128_48; R128_48;
     244       15635 :     FFSWAP(uint32_t, d, h);
     245             : #endif
     246             : 
     247       15635 :     state[0] += a; state[1] += b; state[2] += c; state[3] += d;
     248       15635 :     state[4] += e; state[5] += f; state[6] += g; state[7] += h;
     249       15635 : }
     250             : 
     251             : #define ROTATE(x,y) \
     252             :     x = rol(x, 10); \
     253             :     y = rol(y, 10); \
     254             :     n++
     255             : 
     256             : #define ROUND160_0_TO_15(a,b,c,d,e,f,g,h,i,j)                               \
     257             :     a = rol(a + ((  b ^ c  ^ d)      + block[WA[n]]),         ROTA[n]) + e; \
     258             :     f = rol(f + (((~i | h) ^ g)      + block[WB[n]] + KB[0]), ROTB[n]) + j; \
     259             :     ROTATE(c,h)
     260             : 
     261             : #define ROUND160_16_TO_31(a,b,c,d,e,f,g,h,i,j)                              \
     262             :     a = rol(a + ((((c ^ d) & b) ^ d) + block[WA[n]] + KA[0]), ROTA[n]) + e; \
     263             :     f = rol(f + ((((g ^ h) & i) ^ h) + block[WB[n]] + KB[1]), ROTB[n]) + j; \
     264             :     ROTATE(c,h)
     265             : 
     266             : #define ROUND160_32_TO_47(a,b,c,d,e,f,g,h,i,j)                              \
     267             :     a = rol(a + (((~c | b) ^ d)      + block[WA[n]] + KA[1]), ROTA[n]) + e; \
     268             :     f = rol(f + (((~h | g) ^ i)      + block[WB[n]] + KB[2]), ROTB[n]) + j; \
     269             :     ROTATE(c,h)
     270             : 
     271             : #define ROUND160_48_TO_63(a,b,c,d,e,f,g,h,i,j)                              \
     272             :     a = rol(a + ((((b ^ c) & d) ^ c) + block[WA[n]] + KA[2]), ROTA[n]) + e; \
     273             :     f = rol(f + ((((h ^ i) & g) ^ i) + block[WB[n]] + KB[3]), ROTB[n]) + j; \
     274             :     ROTATE(c,h)
     275             : 
     276             : #define ROUND160_64_TO_79(a,b,c,d,e,f,g,h,i,j)                              \
     277             :     a = rol(a + (((~d | c) ^ b)      + block[WA[n]] + KA[3]), ROTA[n]) + e; \
     278             :     f = rol(f + ((  g ^ h  ^ i)      + block[WB[n]]),         ROTB[n]) + j; \
     279             :     ROTATE(c,h)
     280             : 
     281             : #define R160_0                              \
     282             :     ROUND160_0_TO_15(a,b,c,d,e,f,g,h,i,j);  \
     283             :     ROUND160_0_TO_15(e,a,b,c,d,j,f,g,h,i);  \
     284             :     ROUND160_0_TO_15(d,e,a,b,c,i,j,f,g,h);  \
     285             :     ROUND160_0_TO_15(c,d,e,a,b,h,i,j,f,g);  \
     286             :     ROUND160_0_TO_15(b,c,d,e,a,g,h,i,j,f)
     287             : 
     288             : #define R160_16                             \
     289             :     ROUND160_16_TO_31(e,a,b,c,d,j,f,g,h,i); \
     290             :     ROUND160_16_TO_31(d,e,a,b,c,i,j,f,g,h); \
     291             :     ROUND160_16_TO_31(c,d,e,a,b,h,i,j,f,g); \
     292             :     ROUND160_16_TO_31(b,c,d,e,a,g,h,i,j,f); \
     293             :     ROUND160_16_TO_31(a,b,c,d,e,f,g,h,i,j)
     294             : 
     295             : #define R160_32                             \
     296             :     ROUND160_32_TO_47(d,e,a,b,c,i,j,f,g,h); \
     297             :     ROUND160_32_TO_47(c,d,e,a,b,h,i,j,f,g); \
     298             :     ROUND160_32_TO_47(b,c,d,e,a,g,h,i,j,f); \
     299             :     ROUND160_32_TO_47(a,b,c,d,e,f,g,h,i,j); \
     300             :     ROUND160_32_TO_47(e,a,b,c,d,j,f,g,h,i)
     301             : 
     302             : #define R160_48                             \
     303             :     ROUND160_48_TO_63(c,d,e,a,b,h,i,j,f,g); \
     304             :     ROUND160_48_TO_63(b,c,d,e,a,g,h,i,j,f); \
     305             :     ROUND160_48_TO_63(a,b,c,d,e,f,g,h,i,j); \
     306             :     ROUND160_48_TO_63(e,a,b,c,d,j,f,g,h,i); \
     307             :     ROUND160_48_TO_63(d,e,a,b,c,i,j,f,g,h)
     308             : 
     309             : #define R160_64                             \
     310             :     ROUND160_64_TO_79(b,c,d,e,a,g,h,i,j,f); \
     311             :     ROUND160_64_TO_79(a,b,c,d,e,f,g,h,i,j); \
     312             :     ROUND160_64_TO_79(e,a,b,c,d,j,f,g,h,i); \
     313             :     ROUND160_64_TO_79(d,e,a,b,c,i,j,f,g,h); \
     314             :     ROUND160_64_TO_79(c,d,e,a,b,h,i,j,f,g)
     315             : 
     316       15635 : static void ripemd160_transform(uint32_t *state, const uint8_t buffer[64])
     317             : {
     318             :     uint32_t a, b, c, d, e, f, g, h, i, j, av_unused t;
     319             :     uint32_t block[16];
     320             :     int n;
     321             : 
     322       15635 :     a = f = state[0];
     323       15635 :     b = g = state[1];
     324       15635 :     c = h = state[2];
     325       15635 :     d = i = state[3];
     326       15635 :     e = j = state[4];
     327             : 
     328      265795 :     for (n = 0; n < 16; n++)
     329      250160 :         block[n] = AV_RL32(buffer + 4 * n);
     330       15635 :     n = 0;
     331             : 
     332             : #if CONFIG_SMALL
     333             :     for (; n < 16;) {
     334             :         ROUND160_0_TO_15(a,b,c,d,e,f,g,h,i,j);
     335             :         t = e; e = d; d = c; c = b; b = a; a = t;
     336             :         t = j; j = i; i = h; h = g; g = f; f = t;
     337             :     }
     338             : 
     339             :     for (; n < 32;) {
     340             :         ROUND160_16_TO_31(a,b,c,d,e,f,g,h,i,j);
     341             :         t = e; e = d; d = c; c = b; b = a; a = t;
     342             :         t = j; j = i; i = h; h = g; g = f; f = t;
     343             :     }
     344             : 
     345             :     for (; n < 48;) {
     346             :         ROUND160_32_TO_47(a,b,c,d,e,f,g,h,i,j);
     347             :         t = e; e = d; d = c; c = b; b = a; a = t;
     348             :         t = j; j = i; i = h; h = g; g = f; f = t;
     349             :     }
     350             : 
     351             :     for (; n < 64;) {
     352             :         ROUND160_48_TO_63(a,b,c,d,e,f,g,h,i,j);
     353             :         t = e; e = d; d = c; c = b; b = a; a = t;
     354             :         t = j; j = i; i = h; h = g; g = f; f = t;
     355             :     }
     356             : 
     357             :     for (; n < 80;) {
     358             :         ROUND160_64_TO_79(a,b,c,d,e,f,g,h,i,j);
     359             :         t = e; e = d; d = c; c = b; b = a; a = t;
     360             :         t = j; j = i; i = h; h = g; g = f; f = t;
     361             :     }
     362             : #else
     363             : 
     364       15635 :     R160_0; R160_0; R160_0;
     365       15635 :     ROUND160_0_TO_15(a,b,c,d,e,f,g,h,i,j);
     366             : 
     367       15635 :     R160_16; R160_16; R160_16;
     368       15635 :     ROUND160_16_TO_31(e,a,b,c,d,j,f,g,h,i);
     369             : 
     370       15635 :     R160_32; R160_32; R160_32;
     371       15635 :     ROUND160_32_TO_47(d,e,a,b,c,i,j,f,g,h);
     372             : 
     373       15635 :     R160_48; R160_48; R160_48;
     374       15635 :     ROUND160_48_TO_63(c,d,e,a,b,h,i,j,f,g);
     375             : 
     376       15635 :     R160_64; R160_64; R160_64;
     377       15635 :     ROUND160_64_TO_79(b,c,d,e,a,g,h,i,j,f);
     378             : #endif
     379             : 
     380       15635 :     i += c + state[1];
     381       15635 :     state[1] = state[2] + d + j;
     382       15635 :     state[2] = state[3] + e + f;
     383       15635 :     state[3] = state[4] + a + g;
     384       15635 :     state[4] = state[0] + b + h;
     385       15635 :     state[0] = i;
     386       15635 : }
     387             : 
     388       15635 : static void ripemd320_transform(uint32_t *state, const uint8_t buffer[64])
     389             : {
     390             :     uint32_t a, b, c, d, e, f, g, h, i, j, av_unused t;
     391             :     uint32_t block[16];
     392             :     int n;
     393             : 
     394       15635 :     a = state[0]; b = state[1]; c = state[2]; d = state[3]; e = state[4];
     395       15635 :     f = state[5]; g = state[6]; h = state[7]; i = state[8]; j = state[9];
     396             : 
     397      265795 :     for (n = 0; n < 16; n++)
     398      250160 :         block[n] = AV_RL32(buffer + 4 * n);
     399       15635 :     n = 0;
     400             : 
     401             : #if CONFIG_SMALL
     402             :     for (; n < 16;) {
     403             :         ROUND160_0_TO_15(a,b,c,d,e,f,g,h,i,j);
     404             :         t = e; e = d; d = c; c = b; b = a; a = t;
     405             :         t = j; j = i; i = h; h = g; g = f; f = t;
     406             :     }
     407             :     FFSWAP(uint32_t, b, g);
     408             : 
     409             :     for (; n < 32;) {
     410             :         ROUND160_16_TO_31(a,b,c,d,e,f,g,h,i,j);
     411             :         t = e; e = d; d = c; c = b; b = a; a = t;
     412             :         t = j; j = i; i = h; h = g; g = f; f = t;
     413             :     }
     414             :     FFSWAP(uint32_t, d, i);
     415             : 
     416             :     for (; n < 48;) {
     417             :         ROUND160_32_TO_47(a,b,c,d,e,f,g,h,i,j);
     418             :         t = e; e = d; d = c; c = b; b = a; a = t;
     419             :         t = j; j = i; i = h; h = g; g = f; f = t;
     420             :     }
     421             :     FFSWAP(uint32_t, a, f);
     422             : 
     423             :     for (; n < 64;) {
     424             :         ROUND160_48_TO_63(a,b,c,d,e,f,g,h,i,j);
     425             :         t = e; e = d; d = c; c = b; b = a; a = t;
     426             :         t = j; j = i; i = h; h = g; g = f; f = t;
     427             :     }
     428             :     FFSWAP(uint32_t, c, h);
     429             : 
     430             :     for (; n < 80;) {
     431             :         ROUND160_64_TO_79(a,b,c,d,e,f,g,h,i,j);
     432             :         t = e; e = d; d = c; c = b; b = a; a = t;
     433             :         t = j; j = i; i = h; h = g; g = f; f = t;
     434             :     }
     435             :     FFSWAP(uint32_t, e, j);
     436             : #else
     437             : 
     438       15635 :     R160_0; R160_0; R160_0;
     439       15635 :     ROUND160_0_TO_15(a,b,c,d,e,f,g,h,i,j);
     440       15635 :     FFSWAP(uint32_t, a, f);
     441             : 
     442       15635 :     R160_16; R160_16; R160_16;
     443       15635 :     ROUND160_16_TO_31(e,a,b,c,d,j,f,g,h,i);
     444       15635 :     FFSWAP(uint32_t, b, g);
     445             : 
     446       15635 :     R160_32; R160_32; R160_32;
     447       15635 :     ROUND160_32_TO_47(d,e,a,b,c,i,j,f,g,h);
     448       15635 :     FFSWAP(uint32_t, c, h);
     449             : 
     450       15635 :     R160_48; R160_48; R160_48;
     451       15635 :     ROUND160_48_TO_63(c,d,e,a,b,h,i,j,f,g);
     452       15635 :     FFSWAP(uint32_t, d, i);
     453             : 
     454       15635 :     R160_64; R160_64; R160_64;
     455       15635 :     ROUND160_64_TO_79(b,c,d,e,a,g,h,i,j,f);
     456       15635 :     FFSWAP(uint32_t, e, j);
     457             : #endif
     458             : 
     459       15635 :     state[0] += a; state[1] += b; state[2] += c; state[3] += d; state[4] += e;
     460       15635 :     state[5] += f; state[6] += g; state[7] += h; state[8] += i; state[9] += j;
     461       15635 : }
     462             : 
     463          24 : av_cold int av_ripemd_init(AVRIPEMD *ctx, int bits)
     464             : {
     465          24 :     ctx->digest_len = bits >> 5;
     466          24 :     switch (bits) {
     467             :     case 128: // RIPEMD-128
     468           6 :         ctx->state[0] = 0x67452301;
     469           6 :         ctx->state[1] = 0xEFCDAB89;
     470           6 :         ctx->state[2] = 0x98BADCFE;
     471           6 :         ctx->state[3] = 0x10325476;
     472           6 :         ctx->transform = ripemd128_transform;
     473           6 :         break;
     474             :     case 160: // RIPEMD-160
     475           6 :         ctx->state[0] = 0x67452301;
     476           6 :         ctx->state[1] = 0xEFCDAB89;
     477           6 :         ctx->state[2] = 0x98BADCFE;
     478           6 :         ctx->state[3] = 0x10325476;
     479           6 :         ctx->state[4] = 0xC3D2E1F0;
     480           6 :         ctx->transform = ripemd160_transform;
     481           6 :         break;
     482             :     case 256: // RIPEMD-256
     483           6 :         ctx->state[0] = 0x67452301;
     484           6 :         ctx->state[1] = 0xEFCDAB89;
     485           6 :         ctx->state[2] = 0x98BADCFE;
     486           6 :         ctx->state[3] = 0x10325476;
     487           6 :         ctx->state[4] = 0x76543210;
     488           6 :         ctx->state[5] = 0xFEDCBA98;
     489           6 :         ctx->state[6] = 0x89ABCDEF;
     490           6 :         ctx->state[7] = 0x01234567;
     491           6 :         ctx->transform = ripemd256_transform;
     492           6 :         break;
     493             :     case 320: // RIPEMD-320
     494           6 :         ctx->state[0] = 0x67452301;
     495           6 :         ctx->state[1] = 0xEFCDAB89;
     496           6 :         ctx->state[2] = 0x98BADCFE;
     497           6 :         ctx->state[3] = 0x10325476;
     498           6 :         ctx->state[4] = 0xC3D2E1F0;
     499           6 :         ctx->state[5] = 0x76543210;
     500           6 :         ctx->state[6] = 0xFEDCBA98;
     501           6 :         ctx->state[7] = 0x89ABCDEF;
     502           6 :         ctx->state[8] = 0x01234567;
     503           6 :         ctx->state[9] = 0x3C2D1E0F;
     504           6 :         ctx->transform = ripemd320_transform;
     505           6 :         break;
     506             :     default:
     507           0 :         return AVERROR(EINVAL);
     508             :     }
     509          24 :     ctx->count = 0;
     510          24 :     return 0;
     511             : }
     512             : 
     513     4001408 : void av_ripemd_update(AVRIPEMD* ctx, const uint8_t* data, unsigned int len)
     514             : {
     515             :     unsigned int i, j;
     516             : 
     517     4001408 :     j = ctx->count & 63;
     518     4001408 :     ctx->count += len;
     519             : #if CONFIG_SMALL
     520             :     for (i = 0; i < len; i++) {
     521             :         ctx->buffer[j++] = data[i];
     522             :         if (64 == j) {
     523             :             ctx->transform(ctx->state, ctx->buffer);
     524             :             j = 0;
     525             :         }
     526             :     }
     527             : #else
     528     4001408 :     if ((j + len) > 63) {
     529       62540 :         memcpy(&ctx->buffer[j], data, (i = 64 - j));
     530       62540 :         ctx->transform(ctx->state, ctx->buffer);
     531       62540 :         for (; i + 63 < len; i += 64)
     532           0 :             ctx->transform(ctx->state, &data[i]);
     533       62540 :         j = 0;
     534             :     } else
     535     3938868 :         i = 0;
     536     4001408 :     memcpy(&ctx->buffer[j], &data[i], len - i);
     537             : #endif
     538     4001408 : }
     539             : 
     540          24 : void av_ripemd_final(AVRIPEMD* ctx, uint8_t *digest)
     541             : {
     542             :     int i;
     543          24 :     uint64_t finalcount = av_le2ne64(ctx->count << 3);
     544             : 
     545          24 :     av_ripemd_update(ctx, "\200", 1);
     546        1388 :     while ((ctx->count & 63) != 56)
     547        1340 :         av_ripemd_update(ctx, "", 1);
     548          24 :     av_ripemd_update(ctx, (uint8_t *)&finalcount, 8); /* Should cause a transform() */
     549         186 :     for (i = 0; i < ctx->digest_len; i++)
     550         162 :         AV_WL32(digest + i*4, ctx->state[i]);
     551          24 : }

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