Implementation translated from Keccak-inplace.c // in the keccak reference code. var t, bc0, bc1, bc2, bc3, bc4, d0, d1, d2, d3, d4 uint64 for i := 0; i < 24; i += 4 { // Combines the 5 steps in each round into 2 steps. // Unrolls 4 rounds per loop and spreads some steps across rounds. // Round 1 bc0 = a[0] ^ a[5] ^ a[10] ^ a[15] ^ a[20] bc1 = a[1] ^ a[6] ^ a[11] ^ a[16] ^ a[21] bc2 = a[2] ^ a[7] ^ a[12] ^ a[17] ^ a[22] bc3 = a[3] ^ a[8] ^ a[13] ^ a[18] ^ a[23] bc4 = a[4] ^ a[9] ^ a[14] ^ a[19] ^ a[24]...