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used pre-calculated GOST_FS(1)

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This commit is contained in:
orignal 2017-05-03 19:07:57 -04:00
parent 523237ccbc
commit e73500f88d
1 changed files with 22 additions and 3 deletions
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25
gost/cuda_gosthash.cu
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@ -681,6 +681,15 @@ void GOST_Xor512_3(uint64_t* C, uint64_t* const A, uint64_t* const B)
#endif
}
__device__ __forceinline__
void GOST_Xor512_c(uint64_t* C, uint64_t* const A, const uint64_t* B, uint64_t c)
{
#pragma unroll 8
for(int i=0; i<8; i++) {
C[i] = A[i] ^ B[i] ^ c;
}
}
__device__ __forceinline__
void GOST_FS(uint64_t* const state64, uint64_t* return_state)
{
@ -852,6 +861,18 @@ void GOST_g_0_0(uint64_t* h, uint64_t* const M) // input h assumed zero, for iv
GOST_Xor512 (h, t, M); // h = t ^ M
}
__device__
void GOST_g_0_1(uint64_t* h, uint64_t* const M) // input h assumed all bytes one, for iv 256
{
#pragma unroll
for(int i = 0; i < 8; i++) h[i] = 0x155f7bb040eec523; // GOST_F(1)
uint64_t t[8];
GOST_E(h, M, t);
GOST_Xor512_c(h, t, M, 0x0101010101010101); // h = t ^ M ^ 1
}
__global__
/*__launch_bounds__(256,3)*/
void gostd_gpu_hash_80(const uint32_t threads, const uint32_t startNonce, uint32_t *resNonces)
@ -880,10 +901,8 @@ void gostd_gpu_hash_80(const uint32_t threads, const uint32_t startNonce, uint32
// second hash (GOST 34.11-256 over 64 bytes)
uint64_t __align__(8) hash[8];
#pragma unroll
for (int i=0; i< 8; i++) hash[i] = 0x0101010101010101; // iv for 256
// second block
GOST_g_0(hash, hash1);
GOST_g_0_1(hash, hash1); // // iv for 256 assumed (all bytes one)
N[7] = 0x0002000000000000; // 512
// first block
GOST_g_N(hash, c_header1, N);