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use __byte_perm to extract byte

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orignal 2017-05-10 15:52:24 -04:00
parent 601880ade8
commit 3d3279670a
1 changed files with 27 additions and 10 deletions
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37
gost/cuda_gosthash.cu
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@ -666,23 +666,40 @@ void GOST_Xor512_c(uint64_t* C, uint64_t* const A, const uint64_t* B, uint64_t c
}
}
#define EXTRACT_BYTE(x,i) __byte_perm(x,0,0x4440 + i)
__device__ __forceinline__
void GOST_FS(uint64_t* const state64, uint64_t* return_state)
{
uchar* state = (uchar*) state64;
uint32_t * state32 = (uint32_t *)state64;
uint64_t r;
for (int b=0; b<8; b++) {
r = T0[state[b+56]];
r ^= T1[state[b+48]];
r ^= T2[state[b+40]];
r ^= T3[state[b+32]];
r ^= T4[state[b+24]];
r ^= T5[state[b+16]];
r ^= T6[state[b+8]];
r ^= T7[state[b]];
#pragma unroll 4
for (int b=0; b<4; b++) {
r = T0[EXTRACT_BYTE(state32[14], b)];
r ^= T1[EXTRACT_BYTE(state32[12], b)];
r ^= T2[EXTRACT_BYTE(state32[10], b)];
r ^= T3[EXTRACT_BYTE(state32[8], b)];
r ^= T4[EXTRACT_BYTE(state32[6], b)];
r ^= T5[EXTRACT_BYTE(state32[4], b)];
r ^= T6[EXTRACT_BYTE(state32[2], b)];
r ^= T7[EXTRACT_BYTE(state32[0], b)];
return_state[b] = r;
}
#pragma unroll 4
for (int b=0; b<4; b++) {
r = T0[EXTRACT_BYTE(state32[15], b)];
r ^= T1[EXTRACT_BYTE(state32[13], b)];
r ^= T2[EXTRACT_BYTE(state32[11], b)];
r ^= T3[EXTRACT_BYTE(state32[9], b)];
r ^= T4[EXTRACT_BYTE(state32[7], b)];
r ^= T5[EXTRACT_BYTE(state32[5], b)];
r ^= T6[EXTRACT_BYTE(state32[3], b)];
r ^= T7[EXTRACT_BYTE(state32[1], b)];
return_state[b+4] = r;
}
}
__device__ __forceinline__