mirror of
https://git.ffmpeg.org/ffmpeg.git
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436 lines
15 KiB
C
436 lines
15 KiB
C
/*
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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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uint8_t ext; ///< extension (0 for 128 and 160, 1 for 256 and 320)
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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], int ext);
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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 SWAP(a,b) if (ext) { int t = a; a = b; b = t; }
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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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static void ripemd128_transform(uint32_t *state, const uint8_t buffer[64], int ext)
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{
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uint32_t a, b, c, d, e, f, g, h;
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uint32_t block[16];
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int n;
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if (ext) {
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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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} else {
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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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}
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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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for (n = 0; n < 16;) {
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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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}
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SWAP(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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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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}
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SWAP(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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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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}
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SWAP(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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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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}
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SWAP(d,h)
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if (ext) {
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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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} else {
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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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}
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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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static void ripemd160_transform(uint32_t *state, const uint8_t buffer[64], int ext)
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{
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uint32_t a, b, c, d, e, f, g, h, i, j;
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uint32_t block[16];
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int n;
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if (ext) {
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a = state[0]; b = state[1]; c = state[2]; d = state[3]; e = state[4];
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f = state[5]; g = state[6]; h = state[7]; i = state[8]; j = state[9];
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} else {
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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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}
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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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for (n = 0; n < 16 - 1;) {
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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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}
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ROUND160_0_TO_15(a,b,c,d,e,f,g,h,i,j);
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SWAP(a,f)
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for (; n < 32 - 1;) {
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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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}
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ROUND160_16_TO_31(e,a,b,c,d,j,f,g,h,i);
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SWAP(b,g)
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for (; n < 48 - 1;) {
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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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}
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ROUND160_32_TO_47(d,e,a,b,c,i,j,f,g,h);
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SWAP(c,h)
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for (; n < 64 - 1;) {
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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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}
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ROUND160_48_TO_63(c,d,e,a,b,h,i,j,f,g);
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SWAP(d,i)
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for (; n < 75;) {
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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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}
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ROUND160_64_TO_79(b,c,d,e,a,g,h,i,j,f);
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SWAP(e,j)
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if (ext) {
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state[0] += a; state[1] += b; state[2] += c; state[3] += d; state[4] += e;
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state[5] += f; state[6] += g; state[7] += h; state[8] += i; state[9] += j;
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} else {
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i += c + state[1];
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state[1] = state[2] + d + j;
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state[2] = state[3] + e + f;
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state[3] = state[4] + a + g;
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state[4] = state[0] + b + h;
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state[0] = i;
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}
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}
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av_cold int av_ripemd_init(AVRIPEMD *ctx, int bits)
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{
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ctx->digest_len = bits >> 5;
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switch (bits) {
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case 128: // RIPEMD-128
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ctx->state[0] = 0x67452301;
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ctx->state[1] = 0xEFCDAB89;
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ctx->state[2] = 0x98BADCFE;
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ctx->state[3] = 0x10325476;
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ctx->transform = ripemd128_transform;
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ctx->ext = 0;
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break;
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case 160: // RIPEMD-160
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ctx->state[0] = 0x67452301;
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ctx->state[1] = 0xEFCDAB89;
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ctx->state[2] = 0x98BADCFE;
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ctx->state[3] = 0x10325476;
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ctx->state[4] = 0xC3D2E1F0;
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ctx->transform = ripemd160_transform;
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ctx->ext = 0;
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break;
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case 256: // RIPEMD-256
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ctx->state[0] = 0x67452301;
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ctx->state[1] = 0xEFCDAB89;
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ctx->state[2] = 0x98BADCFE;
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ctx->state[3] = 0x10325476;
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ctx->state[4] = 0x76543210;
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ctx->state[5] = 0xFEDCBA98;
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ctx->state[6] = 0x89ABCDEF;
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ctx->state[7] = 0x01234567;
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ctx->transform = ripemd128_transform;
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ctx->ext = 1;
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break;
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case 320: // RIPEMD-320
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ctx->state[0] = 0x67452301;
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ctx->state[1] = 0xEFCDAB89;
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ctx->state[2] = 0x98BADCFE;
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ctx->state[3] = 0x10325476;
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ctx->state[4] = 0xC3D2E1F0;
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ctx->state[5] = 0x76543210;
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ctx->state[6] = 0xFEDCBA98;
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ctx->state[7] = 0x89ABCDEF;
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ctx->state[8] = 0x01234567;
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ctx->state[9] = 0x3C2D1E0F;
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ctx->transform = ripemd160_transform;
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ctx->ext = 1;
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break;
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default:
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return -1;
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}
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ctx->count = 0;
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return 0;
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}
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void av_ripemd_update(AVRIPEMD* ctx, const uint8_t* data, unsigned int len)
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{
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unsigned int i, j;
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j = ctx->count & 63;
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ctx->count += len;
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#if CONFIG_SMALL
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for (i = 0; i < len; i++) {
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ctx->buffer[j++] = data[i];
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if (64 == j) {
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ctx->transform(ctx->state, ctx->buffer, ctx->ext);
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j = 0;
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}
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}
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#else
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if ((j + len) > 63) {
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memcpy(&ctx->buffer[j], data, (i = 64 - j));
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ctx->transform(ctx->state, ctx->buffer, ctx->ext);
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for (; i + 63 < len; i += 64)
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ctx->transform(ctx->state, &data[i], ctx->ext);
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j = 0;
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} else
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i = 0;
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memcpy(&ctx->buffer[j], &data[i], len - i);
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#endif
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}
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void av_ripemd_final(AVRIPEMD* ctx, uint8_t *digest)
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{
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int i;
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uint64_t finalcount = av_le2ne64(ctx->count << 3);
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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]);
|
|
}
|
|
|
|
#ifdef TEST
|
|
#include <stdio.h>
|
|
|
|
int main(void)
|
|
{
|
|
int i, j, k;
|
|
AVRIPEMD ctx;
|
|
unsigned char digest[40];
|
|
static const int lengths[4] = { 128, 160, 256, 320 };
|
|
|
|
for (j = 0; j < 4; j++) {
|
|
printf("Testing RIPEMD-%d\n", lengths[j]);
|
|
for (k = 0; k < 3; k++) {
|
|
av_ripemd_init(&ctx, lengths[j]);
|
|
if (k == 0)
|
|
av_ripemd_update(&ctx, "abc", 3);
|
|
else if (k == 1)
|
|
av_ripemd_update(&ctx, "abcdbcdecdefdefgefghfghighijhijkijkljklmklmnlmnomnopnopq", 56);
|
|
else
|
|
for (i = 0; i < 1000*1000; i++)
|
|
av_ripemd_update(&ctx, "a", 1);
|
|
av_ripemd_final(&ctx, digest);
|
|
for (i = 0; i < lengths[j] >> 3; i++)
|
|
printf("%02X", digest[i]);
|
|
putchar('\n');
|
|
}
|
|
switch (j) { //test vectors (from ISO:IEC 10118-3 (2004) and http://homes.esat.kuleuven.be/~bosselae/ripemd160.html)
|
|
case 0:
|
|
printf("c14a1219 9c66e4ba 84636b0f 69144c77\n"
|
|
"a1aa0689 d0fafa2d dc22e88b 49133a06\n"
|
|
"4a7f5723 f954eba1 216c9d8f 6320431f\n");
|
|
break;
|
|
case 1:
|
|
printf("8eb208f7 e05d987a 9b044a8e 98c6b087 f15a0bfc\n"
|
|
"12a05338 4a9c0c88 e405a06c 27dcf49a da62eb2b\n"
|
|
"52783243 c1697bdb e16d37f9 7f68f083 25dc1528\n");
|
|
break;
|
|
case 2:
|
|
printf("afbd6e22 8b9d8cbb cef5ca2d 03e6dba1 0ac0bc7d cbe4680e 1e42d2e9 75459b65\n"
|
|
"38430455 83aac6c8 c8d91285 73e7a980 9afb2a0f 34ccc36e a9e72f16 f6368e3f\n"
|
|
"ac953744 e10e3151 4c150d4d 8d7b6773 42e33399 788296e4 3ae4850c e4f97978\n");
|
|
break;
|
|
case 3:
|
|
printf("de4c01b3 054f8930 a79d09ae 738e9230 1e5a1708 5beffdc1 b8d11671 3e74f82f a942d64c dbc4682d\n"
|
|
"d034a795 0cf72202 1ba4b84d f769a5de 2060e259 df4c9bb4 a4268c0e 935bbc74 70a969c9 d072a1ac\n"
|
|
"bdee37f4 371e2064 6b8b0d86 2dda1629 2ae36f40 965e8c85 09e63d1d bddecc50 3e2b63eb 9245bb66\n");
|
|
break;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
#endif
|