555 lines
17 KiB
C
Executable file
555 lines
17 KiB
C
Executable file
/*
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* Copyright (C) 2007 Michael Niedermayer <michaelni@gmx.at>
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* Copyright (C) 2013 James Almer
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include <string.h>
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#include "attributes.h"
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#include "avutil.h"
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#include "bswap.h"
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#include "intreadwrite.h"
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#include "ripemd.h"
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#include "mem.h"
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/** hash context */
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typedef struct AVRIPEMD {
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uint8_t digest_len; ///< digest length in 32-bit words
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uint64_t count; ///< number of bytes in buffer
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uint8_t buffer[64]; ///< 512-bit buffer of input values used in hash updating
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uint32_t state[10]; ///< current hash value
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/** function used to update hash for 512-bit input block */
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void (*transform)(uint32_t *state, const uint8_t buffer[64]);
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} AVRIPEMD;
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const int av_ripemd_size = sizeof(AVRIPEMD);
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struct AVRIPEMD *av_ripemd_alloc(void)
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{
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return av_mallocz(sizeof(struct AVRIPEMD));
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}
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static const uint32_t KA[4] = {
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0x5a827999, 0x6ed9eba1, 0x8f1bbcdc, 0xa953fd4e
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};
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static const uint32_t KB[4] = {
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0x50a28be6, 0x5c4dd124, 0x6d703ef3, 0x7a6d76e9
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};
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static const int ROTA[80] = {
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11, 14, 15, 12, 5, 8, 7 , 9, 11, 13, 14, 15, 6, 7, 9, 8,
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7 , 6, 8, 13, 11, 9, 7, 15, 7, 12, 15, 9, 11, 7, 13, 12,
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11, 13, 6, 7, 14, 9, 13, 15, 14, 8, 13, 6, 5, 12, 7, 5,
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11, 12, 14, 15, 14, 15, 9, 8, 9, 14, 5, 6, 8, 6, 5, 12,
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9, 15, 5, 11, 6, 8, 13, 12, 5, 12, 13, 14, 11, 8, 5, 6
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};
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static const int ROTB[80] = {
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8, 9, 9, 11, 13, 15, 15, 5, 7, 7, 8, 11, 14, 14, 12, 6,
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9, 13, 15, 7, 12, 8, 9, 11, 7, 7, 12, 7, 6, 15, 13, 11,
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9, 7, 15, 11, 8, 6, 6, 14, 12, 13, 5, 14, 13, 13, 7, 5,
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15, 5, 8, 11, 14, 14, 6, 14, 6, 9, 12, 9, 12, 5, 15, 8,
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8, 5, 12, 9, 12, 5, 14, 6, 8, 13, 6, 5, 15, 13, 11, 11
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};
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static const int WA[80] = {
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0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
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7, 4, 13, 1, 10, 6, 15, 3, 12, 0, 9, 5, 2, 14, 11, 8,
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3, 10, 14, 4, 9, 15, 8, 1, 2, 7, 0, 6, 13, 11, 5, 12,
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1, 9, 11, 10, 0, 8, 12, 4, 13, 3, 7, 15, 14, 5, 6, 2,
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4, 0, 5, 9, 7, 12, 2, 10, 14, 1, 3, 8, 11, 6, 15, 13
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};
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static const int WB[80] = {
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5, 14, 7, 0, 9, 2, 11, 4, 13, 6, 15, 8, 1, 10, 3, 12,
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6, 11, 3, 7, 0, 13, 5, 10, 14, 15, 8, 12, 4, 9, 1, 2,
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15, 5, 1, 3, 7, 14, 6, 9, 11, 8, 12, 2, 10, 0, 4, 13,
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8, 6, 4, 1, 3, 11, 15, 0, 5, 12, 2, 13, 9, 7, 10, 14,
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12, 15, 10, 4, 1, 5, 8, 7, 6, 2, 13, 14, 0, 3, 9, 11
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};
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#define rol(value, bits) (((value) << (bits)) | ((value) >> (32 - (bits))))
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#define ROUND128_0_TO_15(a,b,c,d,e,f,g,h) \
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a = rol(a + (( b ^ c ^ d) + block[WA[n]]), ROTA[n]); \
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e = rol(e + ((((f ^ g) & h) ^ g) + block[WB[n]] + KB[0]), ROTB[n]); \
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n++
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#define ROUND128_16_TO_31(a,b,c,d,e,f,g,h) \
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a = rol(a + ((((c ^ d) & b) ^ d) + block[WA[n]] + KA[0]), ROTA[n]); \
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e = rol(e + (((~g | f) ^ h) + block[WB[n]] + KB[1]), ROTB[n]); \
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n++
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#define ROUND128_32_TO_47(a,b,c,d,e,f,g,h) \
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a = rol(a + (((~c | b) ^ d) + block[WA[n]] + KA[1]), ROTA[n]); \
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e = rol(e + ((((g ^ h) & f) ^ h) + block[WB[n]] + KB[2]), ROTB[n]); \
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n++
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#define ROUND128_48_TO_63(a,b,c,d,e,f,g,h) \
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a = rol(a + ((((b ^ c) & d) ^ c) + block[WA[n]] + KA[2]), ROTA[n]); \
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e = rol(e + (( f ^ g ^ h) + block[WB[n]]), ROTB[n]); \
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n++
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#define R128_0 \
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ROUND128_0_TO_15(a,b,c,d,e,f,g,h); \
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ROUND128_0_TO_15(d,a,b,c,h,e,f,g); \
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ROUND128_0_TO_15(c,d,a,b,g,h,e,f); \
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ROUND128_0_TO_15(b,c,d,a,f,g,h,e)
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#define R128_16 \
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ROUND128_16_TO_31(a,b,c,d,e,f,g,h); \
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ROUND128_16_TO_31(d,a,b,c,h,e,f,g); \
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ROUND128_16_TO_31(c,d,a,b,g,h,e,f); \
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ROUND128_16_TO_31(b,c,d,a,f,g,h,e)
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#define R128_32 \
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ROUND128_32_TO_47(a,b,c,d,e,f,g,h); \
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ROUND128_32_TO_47(d,a,b,c,h,e,f,g); \
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ROUND128_32_TO_47(c,d,a,b,g,h,e,f); \
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ROUND128_32_TO_47(b,c,d,a,f,g,h,e)
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#define R128_48 \
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ROUND128_48_TO_63(a,b,c,d,e,f,g,h); \
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ROUND128_48_TO_63(d,a,b,c,h,e,f,g); \
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ROUND128_48_TO_63(c,d,a,b,g,h,e,f); \
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ROUND128_48_TO_63(b,c,d,a,f,g,h,e)
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static void ripemd128_transform(uint32_t *state, const uint8_t buffer[64])
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{
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uint32_t a, b, c, d, e, f, g, h, av_unused t;
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uint32_t block[16];
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int n;
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a = e = state[0];
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b = f = state[1];
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c = g = state[2];
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d = h = state[3];
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for (n = 0; n < 16; n++)
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block[n] = AV_RL32(buffer + 4 * n);
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n = 0;
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#if CONFIG_SMALL
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for (; n < 16;) {
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ROUND128_0_TO_15(a,b,c,d,e,f,g,h);
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t = d; d = c; c = b; b = a; a = t;
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t = h; h = g; g = f; f = e; e = t;
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}
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for (; n < 32;) {
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ROUND128_16_TO_31(a,b,c,d,e,f,g,h);
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t = d; d = c; c = b; b = a; a = t;
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t = h; h = g; g = f; f = e; e = t;
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}
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for (; n < 48;) {
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ROUND128_32_TO_47(a,b,c,d,e,f,g,h);
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t = d; d = c; c = b; b = a; a = t;
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t = h; h = g; g = f; f = e; e = t;
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}
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for (; n < 64;) {
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ROUND128_48_TO_63(a,b,c,d,e,f,g,h);
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t = d; d = c; c = b; b = a; a = t;
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t = h; h = g; g = f; f = e; e = t;
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}
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#else
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R128_0; R128_0; R128_0; R128_0;
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R128_16; R128_16; R128_16; R128_16;
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R128_32; R128_32; R128_32; R128_32;
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R128_48; R128_48; R128_48; R128_48;
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#endif
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h += c + state[1];
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state[1] = state[2] + d + e;
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state[2] = state[3] + a + f;
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state[3] = state[0] + b + g;
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state[0] = h;
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}
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static void ripemd256_transform(uint32_t *state, const uint8_t buffer[64])
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{
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uint32_t a, b, c, d, e, f, g, h, av_unused t;
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uint32_t block[16];
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int n;
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a = state[0]; b = state[1]; c = state[2]; d = state[3];
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e = state[4]; f = state[5]; g = state[6]; h = state[7];
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for (n = 0; n < 16; n++)
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block[n] = AV_RL32(buffer + 4 * n);
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n = 0;
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#if CONFIG_SMALL
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for (; n < 16;) {
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ROUND128_0_TO_15(a,b,c,d,e,f,g,h);
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t = d; d = c; c = b; b = a; a = t;
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t = h; h = g; g = f; f = e; e = t;
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}
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FFSWAP(uint32_t, a, e);
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for (; n < 32;) {
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ROUND128_16_TO_31(a,b,c,d,e,f,g,h);
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t = d; d = c; c = b; b = a; a = t;
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t = h; h = g; g = f; f = e; e = t;
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}
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FFSWAP(uint32_t, b, f);
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for (; n < 48;) {
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ROUND128_32_TO_47(a,b,c,d,e,f,g,h);
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t = d; d = c; c = b; b = a; a = t;
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t = h; h = g; g = f; f = e; e = t;
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}
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FFSWAP(uint32_t, c, g);
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for (; n < 64;) {
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ROUND128_48_TO_63(a,b,c,d,e,f,g,h);
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t = d; d = c; c = b; b = a; a = t;
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t = h; h = g; g = f; f = e; e = t;
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}
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FFSWAP(uint32_t, d, h);
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#else
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R128_0; R128_0; R128_0; R128_0;
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FFSWAP(uint32_t, a, e);
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R128_16; R128_16; R128_16; R128_16;
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FFSWAP(uint32_t, b, f);
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R128_32; R128_32; R128_32; R128_32;
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FFSWAP(uint32_t, c, g);
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R128_48; R128_48; R128_48; R128_48;
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FFSWAP(uint32_t, d, h);
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#endif
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state[0] += a; state[1] += b; state[2] += c; state[3] += d;
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state[4] += e; state[5] += f; state[6] += g; state[7] += h;
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}
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#define ROTATE(x,y) \
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x = rol(x, 10); \
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y = rol(y, 10); \
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n++
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#define ROUND160_0_TO_15(a,b,c,d,e,f,g,h,i,j) \
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a = rol(a + (( b ^ c ^ d) + block[WA[n]]), ROTA[n]) + e; \
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f = rol(f + (((~i | h) ^ g) + block[WB[n]] + KB[0]), ROTB[n]) + j; \
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ROTATE(c,h)
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#define ROUND160_16_TO_31(a,b,c,d,e,f,g,h,i,j) \
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a = rol(a + ((((c ^ d) & b) ^ d) + block[WA[n]] + KA[0]), ROTA[n]) + e; \
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f = rol(f + ((((g ^ h) & i) ^ h) + block[WB[n]] + KB[1]), ROTB[n]) + j; \
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ROTATE(c,h)
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#define ROUND160_32_TO_47(a,b,c,d,e,f,g,h,i,j) \
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a = rol(a + (((~c | b) ^ d) + block[WA[n]] + KA[1]), ROTA[n]) + e; \
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f = rol(f + (((~h | g) ^ i) + block[WB[n]] + KB[2]), ROTB[n]) + j; \
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ROTATE(c,h)
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#define ROUND160_48_TO_63(a,b,c,d,e,f,g,h,i,j) \
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a = rol(a + ((((b ^ c) & d) ^ c) + block[WA[n]] + KA[2]), ROTA[n]) + e; \
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f = rol(f + ((((h ^ i) & g) ^ i) + block[WB[n]] + KB[3]), ROTB[n]) + j; \
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ROTATE(c,h)
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#define ROUND160_64_TO_79(a,b,c,d,e,f,g,h,i,j) \
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a = rol(a + (((~d | c) ^ b) + block[WA[n]] + KA[3]), ROTA[n]) + e; \
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f = rol(f + (( g ^ h ^ i) + block[WB[n]]), ROTB[n]) + j; \
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ROTATE(c,h)
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#define R160_0 \
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ROUND160_0_TO_15(a,b,c,d,e,f,g,h,i,j); \
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ROUND160_0_TO_15(e,a,b,c,d,j,f,g,h,i); \
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ROUND160_0_TO_15(d,e,a,b,c,i,j,f,g,h); \
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ROUND160_0_TO_15(c,d,e,a,b,h,i,j,f,g); \
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ROUND160_0_TO_15(b,c,d,e,a,g,h,i,j,f)
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#define R160_16 \
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ROUND160_16_TO_31(e,a,b,c,d,j,f,g,h,i); \
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ROUND160_16_TO_31(d,e,a,b,c,i,j,f,g,h); \
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ROUND160_16_TO_31(c,d,e,a,b,h,i,j,f,g); \
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ROUND160_16_TO_31(b,c,d,e,a,g,h,i,j,f); \
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ROUND160_16_TO_31(a,b,c,d,e,f,g,h,i,j)
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#define R160_32 \
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ROUND160_32_TO_47(d,e,a,b,c,i,j,f,g,h); \
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ROUND160_32_TO_47(c,d,e,a,b,h,i,j,f,g); \
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ROUND160_32_TO_47(b,c,d,e,a,g,h,i,j,f); \
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ROUND160_32_TO_47(a,b,c,d,e,f,g,h,i,j); \
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ROUND160_32_TO_47(e,a,b,c,d,j,f,g,h,i)
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#define R160_48 \
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ROUND160_48_TO_63(c,d,e,a,b,h,i,j,f,g); \
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ROUND160_48_TO_63(b,c,d,e,a,g,h,i,j,f); \
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ROUND160_48_TO_63(a,b,c,d,e,f,g,h,i,j); \
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ROUND160_48_TO_63(e,a,b,c,d,j,f,g,h,i); \
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ROUND160_48_TO_63(d,e,a,b,c,i,j,f,g,h)
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#define R160_64 \
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ROUND160_64_TO_79(b,c,d,e,a,g,h,i,j,f); \
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ROUND160_64_TO_79(a,b,c,d,e,f,g,h,i,j); \
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ROUND160_64_TO_79(e,a,b,c,d,j,f,g,h,i); \
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ROUND160_64_TO_79(d,e,a,b,c,i,j,f,g,h); \
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ROUND160_64_TO_79(c,d,e,a,b,h,i,j,f,g)
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static void ripemd160_transform(uint32_t *state, const uint8_t buffer[64])
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{
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uint32_t a, b, c, d, e, f, g, h, i, j, av_unused t;
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uint32_t block[16];
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int n;
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a = f = state[0];
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b = g = state[1];
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c = h = state[2];
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d = i = state[3];
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e = j = state[4];
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for (n = 0; n < 16; n++)
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block[n] = AV_RL32(buffer + 4 * n);
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n = 0;
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#if CONFIG_SMALL
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for (; n < 16;) {
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ROUND160_0_TO_15(a,b,c,d,e,f,g,h,i,j);
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t = e; e = d; d = c; c = b; b = a; a = t;
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t = j; j = i; i = h; h = g; g = f; f = t;
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}
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for (; n < 32;) {
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ROUND160_16_TO_31(a,b,c,d,e,f,g,h,i,j);
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t = e; e = d; d = c; c = b; b = a; a = t;
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t = j; j = i; i = h; h = g; g = f; f = t;
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}
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for (; n < 48;) {
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ROUND160_32_TO_47(a,b,c,d,e,f,g,h,i,j);
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t = e; e = d; d = c; c = b; b = a; a = t;
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t = j; j = i; i = h; h = g; g = f; f = t;
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}
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for (; n < 64;) {
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ROUND160_48_TO_63(a,b,c,d,e,f,g,h,i,j);
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t = e; e = d; d = c; c = b; b = a; a = t;
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t = j; j = i; i = h; h = g; g = f; f = t;
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}
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for (; n < 80;) {
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ROUND160_64_TO_79(a,b,c,d,e,f,g,h,i,j);
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t = e; e = d; d = c; c = b; b = a; a = t;
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t = j; j = i; i = h; h = g; g = f; f = t;
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}
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#else
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R160_0; R160_0; R160_0;
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ROUND160_0_TO_15(a,b,c,d,e,f,g,h,i,j);
|
|
|
|
R160_16; R160_16; R160_16;
|
|
ROUND160_16_TO_31(e,a,b,c,d,j,f,g,h,i);
|
|
|
|
R160_32; R160_32; R160_32;
|
|
ROUND160_32_TO_47(d,e,a,b,c,i,j,f,g,h);
|
|
|
|
R160_48; R160_48; R160_48;
|
|
ROUND160_48_TO_63(c,d,e,a,b,h,i,j,f,g);
|
|
|
|
R160_64; R160_64; R160_64;
|
|
ROUND160_64_TO_79(b,c,d,e,a,g,h,i,j,f);
|
|
#endif
|
|
|
|
i += c + state[1];
|
|
state[1] = state[2] + d + j;
|
|
state[2] = state[3] + e + f;
|
|
state[3] = state[4] + a + g;
|
|
state[4] = state[0] + b + h;
|
|
state[0] = i;
|
|
}
|
|
|
|
static void ripemd320_transform(uint32_t *state, const uint8_t buffer[64])
|
|
{
|
|
uint32_t a, b, c, d, e, f, g, h, i, j, av_unused t;
|
|
uint32_t block[16];
|
|
int n;
|
|
|
|
a = state[0]; b = state[1]; c = state[2]; d = state[3]; e = state[4];
|
|
f = state[5]; g = state[6]; h = state[7]; i = state[8]; j = state[9];
|
|
|
|
for (n = 0; n < 16; n++)
|
|
block[n] = AV_RL32(buffer + 4 * n);
|
|
n = 0;
|
|
|
|
#if CONFIG_SMALL
|
|
for (; n < 16;) {
|
|
ROUND160_0_TO_15(a,b,c,d,e,f,g,h,i,j);
|
|
t = e; e = d; d = c; c = b; b = a; a = t;
|
|
t = j; j = i; i = h; h = g; g = f; f = t;
|
|
}
|
|
FFSWAP(uint32_t, b, g);
|
|
|
|
for (; n < 32;) {
|
|
ROUND160_16_TO_31(a,b,c,d,e,f,g,h,i,j);
|
|
t = e; e = d; d = c; c = b; b = a; a = t;
|
|
t = j; j = i; i = h; h = g; g = f; f = t;
|
|
}
|
|
FFSWAP(uint32_t, d, i);
|
|
|
|
for (; n < 48;) {
|
|
ROUND160_32_TO_47(a,b,c,d,e,f,g,h,i,j);
|
|
t = e; e = d; d = c; c = b; b = a; a = t;
|
|
t = j; j = i; i = h; h = g; g = f; f = t;
|
|
}
|
|
FFSWAP(uint32_t, a, f);
|
|
|
|
for (; n < 64;) {
|
|
ROUND160_48_TO_63(a,b,c,d,e,f,g,h,i,j);
|
|
t = e; e = d; d = c; c = b; b = a; a = t;
|
|
t = j; j = i; i = h; h = g; g = f; f = t;
|
|
}
|
|
FFSWAP(uint32_t, c, h);
|
|
|
|
for (; n < 80;) {
|
|
ROUND160_64_TO_79(a,b,c,d,e,f,g,h,i,j);
|
|
t = e; e = d; d = c; c = b; b = a; a = t;
|
|
t = j; j = i; i = h; h = g; g = f; f = t;
|
|
}
|
|
FFSWAP(uint32_t, e, j);
|
|
#else
|
|
|
|
R160_0; R160_0; R160_0;
|
|
ROUND160_0_TO_15(a,b,c,d,e,f,g,h,i,j);
|
|
FFSWAP(uint32_t, a, f);
|
|
|
|
R160_16; R160_16; R160_16;
|
|
ROUND160_16_TO_31(e,a,b,c,d,j,f,g,h,i);
|
|
FFSWAP(uint32_t, b, g);
|
|
|
|
R160_32; R160_32; R160_32;
|
|
ROUND160_32_TO_47(d,e,a,b,c,i,j,f,g,h);
|
|
FFSWAP(uint32_t, c, h);
|
|
|
|
R160_48; R160_48; R160_48;
|
|
ROUND160_48_TO_63(c,d,e,a,b,h,i,j,f,g);
|
|
FFSWAP(uint32_t, d, i);
|
|
|
|
R160_64; R160_64; R160_64;
|
|
ROUND160_64_TO_79(b,c,d,e,a,g,h,i,j,f);
|
|
FFSWAP(uint32_t, e, j);
|
|
#endif
|
|
|
|
state[0] += a; state[1] += b; state[2] += c; state[3] += d; state[4] += e;
|
|
state[5] += f; state[6] += g; state[7] += h; state[8] += i; state[9] += j;
|
|
}
|
|
|
|
av_cold int av_ripemd_init(AVRIPEMD *ctx, int bits)
|
|
{
|
|
ctx->digest_len = bits >> 5;
|
|
switch (bits) {
|
|
case 128: // RIPEMD-128
|
|
ctx->state[0] = 0x67452301;
|
|
ctx->state[1] = 0xEFCDAB89;
|
|
ctx->state[2] = 0x98BADCFE;
|
|
ctx->state[3] = 0x10325476;
|
|
ctx->transform = ripemd128_transform;
|
|
break;
|
|
case 160: // RIPEMD-160
|
|
ctx->state[0] = 0x67452301;
|
|
ctx->state[1] = 0xEFCDAB89;
|
|
ctx->state[2] = 0x98BADCFE;
|
|
ctx->state[3] = 0x10325476;
|
|
ctx->state[4] = 0xC3D2E1F0;
|
|
ctx->transform = ripemd160_transform;
|
|
break;
|
|
case 256: // RIPEMD-256
|
|
ctx->state[0] = 0x67452301;
|
|
ctx->state[1] = 0xEFCDAB89;
|
|
ctx->state[2] = 0x98BADCFE;
|
|
ctx->state[3] = 0x10325476;
|
|
ctx->state[4] = 0x76543210;
|
|
ctx->state[5] = 0xFEDCBA98;
|
|
ctx->state[6] = 0x89ABCDEF;
|
|
ctx->state[7] = 0x01234567;
|
|
ctx->transform = ripemd256_transform;
|
|
break;
|
|
case 320: // RIPEMD-320
|
|
ctx->state[0] = 0x67452301;
|
|
ctx->state[1] = 0xEFCDAB89;
|
|
ctx->state[2] = 0x98BADCFE;
|
|
ctx->state[3] = 0x10325476;
|
|
ctx->state[4] = 0xC3D2E1F0;
|
|
ctx->state[5] = 0x76543210;
|
|
ctx->state[6] = 0xFEDCBA98;
|
|
ctx->state[7] = 0x89ABCDEF;
|
|
ctx->state[8] = 0x01234567;
|
|
ctx->state[9] = 0x3C2D1E0F;
|
|
ctx->transform = ripemd320_transform;
|
|
break;
|
|
default:
|
|
return AVERROR(EINVAL);
|
|
}
|
|
ctx->count = 0;
|
|
return 0;
|
|
}
|
|
|
|
#if FF_API_CRYPTO_SIZE_T
|
|
void av_ripemd_update(AVRIPEMD* ctx, const uint8_t* data, unsigned int len)
|
|
#else
|
|
void av_ripemd_update(AVRIPEMD* ctx, const uint8_t* data, size_t len)
|
|
#endif
|
|
{
|
|
unsigned int i, j;
|
|
|
|
j = ctx->count & 63;
|
|
ctx->count += len;
|
|
#if CONFIG_SMALL
|
|
for (i = 0; i < len; i++) {
|
|
ctx->buffer[j++] = data[i];
|
|
if (64 == j) {
|
|
ctx->transform(ctx->state, ctx->buffer);
|
|
j = 0;
|
|
}
|
|
}
|
|
#else
|
|
if ((j + len) > 63) {
|
|
memcpy(&ctx->buffer[j], data, (i = 64 - j));
|
|
ctx->transform(ctx->state, ctx->buffer);
|
|
for (; i + 63 < len; i += 64)
|
|
ctx->transform(ctx->state, &data[i]);
|
|
j = 0;
|
|
} else
|
|
i = 0;
|
|
memcpy(&ctx->buffer[j], &data[i], len - i);
|
|
#endif
|
|
}
|
|
|
|
void av_ripemd_final(AVRIPEMD* ctx, uint8_t *digest)
|
|
{
|
|
int i;
|
|
uint64_t finalcount = av_le2ne64(ctx->count << 3);
|
|
|
|
av_ripemd_update(ctx, "\200", 1);
|
|
while ((ctx->count & 63) != 56)
|
|
av_ripemd_update(ctx, "", 1);
|
|
av_ripemd_update(ctx, (uint8_t *)&finalcount, 8); /* Should cause a transform() */
|
|
for (i = 0; i < ctx->digest_len; i++)
|
|
AV_WL32(digest + i*4, ctx->state[i]);
|
|
}
|