Ecosystem/xmrig
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Merge pull request #2990 from SChernykh/dev

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Optimized keccak
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xmrig 2022-03-24 22:22:21 +07:00 committed by GitHub
commit 21fb970949
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GPG key ID: 4AEE18F83AFDEB23
1 changed files with 15 additions and 13 deletions
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28
src/base/crypto/keccak.cpp
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@ -53,10 +53,8 @@ const uint64_t keccakf_rndc[24] =
void xmrig::keccakf(uint64_t st[25], int rounds)
{
int i, j, round;
uint64_t t, bc[5];
for (round = 0; round < rounds; ++round) {
for (int round = 0; round < rounds; ++round) {
uint64_t bc[5];
// Theta
bc[0] = st[0] ^ st[5] ^ st[10] ^ st[15] ^ st[20];
@ -65,17 +63,21 @@ void xmrig::keccakf(uint64_t st[25], int rounds)
bc[3] = st[3] ^ st[8] ^ st[13] ^ st[18] ^ st[23];
bc[4] = st[4] ^ st[9] ^ st[14] ^ st[19] ^ st[24];
for (i = 0; i < 5; ++i) {
t = bc[(i + 4) % 5] ^ ROTL64(bc[(i + 1) % 5], 1);
st[i ] ^= t;
st[i + 5] ^= t;
st[i + 10] ^= t;
st[i + 15] ^= t;
st[i + 20] ^= t;
#define X(i) { \
const uint64_t t = bc[(i + 4) % 5] ^ ROTL64(bc[(i + 1) % 5], 1); \
st[i ] ^= t; \
st[i + 5] ^= t; \
st[i + 10] ^= t; \
st[i + 15] ^= t; \
st[i + 20] ^= t; \
}
X(0); X(1); X(2); X(3); X(4);
#undef (X)
// Rho Pi
t = st[1];
const uint64_t t = st[1];
st[ 1] = ROTL64(st[ 6], 44);
st[ 6] = ROTL64(st[ 9], 20);
st[ 9] = ROTL64(st[22], 61);
@ -103,7 +105,7 @@ void xmrig::keccakf(uint64_t st[25], int rounds)
// Chi
// unrolled loop, where only last iteration is different
j = 0;
int j = 0;
bc[0] = st[j ];
bc[1] = st[j + 1];