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Limit of scope of variables in SHA3

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This commit is contained in:
Alex Beregszaszi 2017-08-30 22:44:38 +01:00
parent 1c0c5d923a
commit 6cec0789b5
1 changed files with 2 additions and 3 deletions
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5
libdevcore/SHA3.cpp
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@ -97,10 +97,9 @@ static const uint64_t RC[24] = \
static inline void keccakf(void* state) { static inline void keccakf(void* state) {
uint64_t* a = (uint64_t*)state; uint64_t* a = (uint64_t*)state;
uint64_t b[5] = {0}; uint64_t b[5] = {0};
uint64_t t = 0;
uint8_t x, y;
for (int i = 0; i < 24; i++) { for (int i = 0; i < 24; i++) {
uint8_t x, y;
// Theta // Theta
FOR5(x, 1, FOR5(x, 1,
b[x] = 0; b[x] = 0;
@ -110,7 +109,7 @@ static inline void keccakf(void* state) {
FOR5(y, 5, FOR5(y, 5,
a[y + x] ^= b[(x + 4) % 5] ^ rol(b[(x + 1) % 5], 1); )) a[y + x] ^= b[(x + 4) % 5] ^ rol(b[(x + 1) % 5], 1); ))
// Rho and pi // Rho and pi
t = a[1]; uint64_t t = a[1];
x = 0; x = 0;
REPEAT24(b[0] = a[pi[x]]; REPEAT24(b[0] = a[pi[x]];
a[pi[x]] = rol(t, rho[x]); a[pi[x]] = rol(t, rho[x]);