ripemd: move ripemd{256, 320} into separate functions
This allows the removal of a few branches. Before: lavu RIPEMD-160 size: 1048576 runs: 1024 time: 7.052 +- 0.010 After: lavu RIPEMD-160 size: 1048576 runs: 1024 time: 6.865 +- 0.015 Signed-off-by: James Almer <jamrial@gmail.com> Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
James Almer
Michael Niedermayer
parent
cc77bb09e4
commit
aa70801aaf
@ -34,9 +34,8 @@ typedef struct AVRIPEMD {
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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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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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@ -88,8 +87,6 @@ static const int WB[80] = {
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#define rol(value, bits) ((value << bits) | (value >> (32 - bits)))
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#define SWAP(a,b) if (ext) { 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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@ -110,21 +107,40 @@ static const int WB[80] = {
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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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#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, t;
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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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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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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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@ -136,77 +152,100 @@ static void ripemd128_transform(uint32_t *state, const uint8_t buffer[64], int e
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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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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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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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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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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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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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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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SWAP(d,h)
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#else
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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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R128_0; R128_0; R128_0; R128_0;
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SWAP(a,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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R128_16; R128_16; R128_16; R128_16;
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SWAP(b,f)
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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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R128_32; R128_32; R128_32; R128_32;
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SWAP(c,g)
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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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R128_48; R128_48; R128_48; R128_48;
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SWAP(d,h)
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#endif
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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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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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@ -239,22 +278,52 @@ static void ripemd128_transform(uint32_t *state, const uint8_t buffer[64], int 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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#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, t;
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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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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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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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@ -266,104 +335,129 @@ static void ripemd160_transform(uint32_t *state, const uint8_t buffer[64], int e
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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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SWAP(b,g)
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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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SWAP(d,i)
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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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SWAP(a,f)
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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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SWAP(c,h)
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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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SWAP(e,j)
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#else
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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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R160_0; R160_0; R160_0;
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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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#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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R160_16; R160_16; R160_16;
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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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#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); \
|
||||
ROUND160_32_TO_47(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);
|
||||
SWAP(c,h)
|
||||
|
||||
#define R160_48 \
|
||||
ROUND160_48_TO_63(c,d,e,a,b,h,i,j,f,g); \
|
||||
ROUND160_48_TO_63(b,c,d,e,a,g,h,i,j,f); \
|
||||
ROUND160_48_TO_63(a,b,c,d,e,f,g,h,i,j); \
|
||||
ROUND160_48_TO_63(e,a,b,c,d,j,f,g,h,i); \
|
||||
ROUND160_48_TO_63(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);
|
||||
SWAP(d,i)
|
||||
|
||||
#define R160_64 \
|
||||
ROUND160_64_TO_79(b,c,d,e,a,g,h,i,j,f); \
|
||||
ROUND160_64_TO_79(a,b,c,d,e,f,g,h,i,j); \
|
||||
ROUND160_64_TO_79(e,a,b,c,d,j,f,g,h,i); \
|
||||
ROUND160_64_TO_79(d,e,a,b,c,i,j,f,g,h); \
|
||||
ROUND160_64_TO_79(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);
|
||||
SWAP(e,j)
|
||||
#endif
|
||||
|
||||
if (ext) {
|
||||
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;
|
||||
} else {
|
||||
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;
|
||||
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)
|
||||
@ -376,7 +470,6 @@ av_cold int av_ripemd_init(AVRIPEMD *ctx, int bits)
|
||||
ctx->state[2] = 0x98BADCFE;
|
||||
ctx->state[3] = 0x10325476;
|
||||
ctx->transform = ripemd128_transform;
|
||||
ctx->ext = 0;
|
||||
break;
|
||||
case 160: // RIPEMD-160
|
||||
ctx->state[0] = 0x67452301;
|
||||
@ -385,7 +478,6 @@ av_cold int av_ripemd_init(AVRIPEMD *ctx, int bits)
|
||||
ctx->state[3] = 0x10325476;
|
||||
ctx->state[4] = 0xC3D2E1F0;
|
||||
ctx->transform = ripemd160_transform;
|
||||
ctx->ext = 0;
|
||||
break;
|
||||
case 256: // RIPEMD-256
|
||||
ctx->state[0] = 0x67452301;
|
||||
@ -396,8 +488,7 @@ av_cold int av_ripemd_init(AVRIPEMD *ctx, int bits)
|
||||
ctx->state[5] = 0xFEDCBA98;
|
||||
ctx->state[6] = 0x89ABCDEF;
|
||||
ctx->state[7] = 0x01234567;
|
||||
ctx->transform = ripemd128_transform;
|
||||
ctx->ext = 1;
|
||||
ctx->transform = ripemd256_transform;
|
||||
break;
|
||||
case 320: // RIPEMD-320
|
||||
ctx->state[0] = 0x67452301;
|
||||
@ -410,8 +501,7 @@ av_cold int av_ripemd_init(AVRIPEMD *ctx, int bits)
|
||||
ctx->state[7] = 0x89ABCDEF;
|
||||
ctx->state[8] = 0x01234567;
|
||||
ctx->state[9] = 0x3C2D1E0F;
|
||||
ctx->transform = ripemd160_transform;
|
||||
ctx->ext = 1;
|
||||
ctx->transform = ripemd320_transform;
|
||||
break;
|
||||
default:
|
||||
return -1;
|
||||
@ -430,16 +520,16 @@ void av_ripemd_update(AVRIPEMD* ctx, const uint8_t* data, unsigned int len)
|
||||
for (i = 0; i < len; i++) {
|
||||
ctx->buffer[j++] = data[i];
|
||||
if (64 == j) {
|
||||
ctx->transform(ctx->state, ctx->buffer, ctx->ext);
|
||||
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, ctx->ext);
|
||||
ctx->transform(ctx->state, ctx->buffer);
|
||||
for (; i + 63 < len; i += 64)
|
||||
ctx->transform(ctx->state, &data[i], ctx->ext);
|
||||
ctx->transform(ctx->state, &data[i]);
|
||||
j = 0;
|
||||
} else
|
||||
i = 0;
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user