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eliminate GOST_hash_X

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orignal 2017-05-03 15:22:56 -04:00
parent 63726e43f5
commit 5eaef1f283
1 changed files with 24 additions and 32 deletions
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56
gost/cuda_gosthash.cu
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@ -27,12 +27,6 @@ __device__ uint64_t d_target[1];
//#define FULL_UNROLL
#define memcpy(dst, src, len) { \
for (int i = 0; i < len; i++) { \
*((uchar*)dst + i) = *((uchar*)src + i); \
} \
}
// Tables for function F
__device__ static uint64_t T0[256] = {
0xE6F87E5C5B711FD0, 0x258377800924FA16, 0xC849E07E852EA4A8, 0x5B4686A18F06C16A,
@ -846,24 +840,6 @@ void GOST_g_0(uint64_t* h, uint64_t* const M)
GOST_Xor512_3(h, t, M); // h = h ^ t ^ M
}
__device__ __forceinline__
void GOST_hash_X(uint64_t *hash, uint64_t * const block1, uint64_t * const block2, uint32_t len) // always 2 blocks of 64 bytes, len is length of first block in bits (either 0 or 128)
{
uint64_t N[8] = { 0 };
// second block
GOST_g_0(hash, block2);
N[7] = 0x0002000000000000; // 512
// first block
GOST_g_N(hash, block1, N);
((uint8_t *)N)[63] = len; // +=128 or 0
GOST_g_0(hash, N);
GOST_Add512(N, block2, block1); // Sigma
GOST_g_0(hash, N);
}
__global__
/*__launch_bounds__(256,3)*/
void gostd_gpu_hash_80(const uint32_t threads, const uint32_t startNonce, uint32_t *resNonces)
@ -872,20 +848,36 @@ void gostd_gpu_hash_80(const uint32_t threads, const uint32_t startNonce, uint32
if (thread < threads)
{
const uint32_t nonce = startNonce + thread;
uint64_t __align__(8) Sigma[8], __align__(8) N[8] = {0};
// first hash (GOST 34.11-512 over 80 bytes)
uint64_t __align__(8) dat2[8];
uint64_t __align__(8) block2[8];
// copy second block of header
#pragma unroll
for (int i = 0; i < 8; i++) dat2[i] = c_header2[i];
((uint32_t *)dat2)[15] = cuda_swab32 (nonce); // change nonce
uint64_t hash1[8] = { 0 }; // iv for 512
GOST_hash_X(hash1, c_header1 + 2, dat2, 128);
for (int i = 0; i < 8; i++) block2[i] = c_header2[i];
((uint32_t *)block2)[15] = cuda_swab32 (nonce); // change nonce
uint64_t __align__(8) hash1[8] = { 0 }; // ivfor 512
// second block
GOST_g_0(hash1, block2);
N[7] = 0x0002000000000000; // 512
// first block
GOST_g_N(hash1, c_header1 + 2, N);
N[7] |= 0x8000000000000000; // +128
GOST_g_0(hash1, N);
GOST_Add512(Sigma, block2, c_header1 + 2);
GOST_g_0(hash1, Sigma);
// second hash (GOST 34.11-256 over 64 bytes)
uint64_t hash[8];
uint64_t __align__(8) hash[8];
#pragma unroll
for (int i=0; i< 8; i++) hash[i] = 0x0101010101010101; // iv for 256
GOST_hash_X(hash, c_header1, hash1, 0);
// second block
GOST_g_0(hash, hash1);
N[7] = 0x0002000000000000; // 512
// first block
GOST_g_N(hash, c_header1, N);
GOST_g_0(hash, N);
GOST_Add512(Sigma, hash1, c_header1);
GOST_g_0(hash, Sigma);
// result is first 32 bytes of hash
uint64_t high = MAKE_ULONGLONG(cuda_swab32(_HIDWORD(hash[0])), cuda_swab32(_LODWORD(hash[0]))); // swab uint64_t and invert