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Code Issues Releases Wiki Activity

correct GOST_Add512 implementation

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This commit is contained in:
orignal 2017-04-26 13:41:52 -04:00
parent 469b4365c9
commit 25e0ab280b
1 changed files with 7 additions and 40 deletions
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47
gost/cuda_gosthash.cu
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@ -570,7 +570,13 @@ void ADD_ASM_512_32(uint32_t* x, uint32_t* const a, uint32_t* const b)
__device__ __forceinline__
void GOST_Add512(void *x, void * const a, void * const b)
{
ADD_ASM_512_32((uint32_t*)x, (uint32_t*)a, (uint32_t*)b);
//ADD_ASM_512_32((uint32_t*)x, (uint32_t*)a, (uint32_t*)b);
uint16_t t = 0;
for(int i = 63; i >= 0; i--)
{
t = ((uint8_t *)a)[i] + ((uint8_t *)b)[i] + (t >> 8);
((uint8_t *)x)[i] = t & 0xFF;
}
}
__device__ __forceinline__
@ -973,20 +979,6 @@ void GOST_E(uint64_t* K, uint64_t* const m, uint64_t *state /* out only */)
GOST_E12(K, state);
}
__device__
void GOST_g_0(uint64_t* h, uint64_t* const M)
{
uint64_t K0[8];
// GOST_F(0);
K0[0] = K0[1] = K0[2] = K0[3] = 0x74a5d4ce2efc83b3;
K0[4] = K0[5] = K0[6] = K0[7] = 0x74a5d4ce2efc83b3;
uint64_t t[8];
GOST_Xor512(t, M, K0); // t = M ^ K0
GOST_E12(K0, t);
GOST_Xor512(h, t, M);
}
__device__
void GOST_g_N(uint64_t* h, uint64_t* const M, uint64_t* const N)
{
@ -1003,31 +995,6 @@ void GOST_g_N(uint64_t* h, uint64_t* const M, uint64_t* const N)
GOST_Xor512_3(h, t, M); // h = h ^ t ^ M
}
__device__
void GOST_g_1(uint64_t* h, uint64_t* N)
{
uint64_t K[8];
GOST_FS(h, K); // K = F(h)
GOST_Xor512(h, h, N);
uint64_t t[8];
GOST_E(K, N, t);
GOST_Xor512(h, h, t);
}
__device__
void GOST_g_F(uint64_t* out, uint64_t* h, uint64_t* M)
{
uint64_t K[8];
GOST_FS(h, K); // K = F(h)
GOST_Add512(M, M, out);
uint64_t t[8];
GOST_E(K, M, t);
GOST_Xor512(t, t, M);
GOST_Xor512(out, t, h);
}
__device__ __forceinline__
void GOST_hash_X(uint64_t *hash, uchar * const message, uint64_t len)