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413 lines
9.7 KiB
Go
413 lines
9.7 KiB
Go
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// Copyright 2014 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// +build !amd64 appengine gccgo
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package sha3
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// rc stores the round constants for use in the ι step.
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var rc = [24]uint64{
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0x0000000000000001,
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0x0000000000008082,
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0x800000000000808A,
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0x8000000080008000,
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0x000000000000808B,
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0x0000000080000001,
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0x8000000080008081,
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0x8000000000008009,
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0x000000000000008A,
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0x0000000000000088,
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0x0000000080008009,
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0x000000008000000A,
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0x000000008000808B,
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0x800000000000008B,
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0x8000000000008089,
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0x8000000000008003,
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0x8000000000008002,
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0x8000000000000080,
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0x000000000000800A,
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0x800000008000000A,
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0x8000000080008081,
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0x8000000000008080,
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0x0000000080000001,
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0x8000000080008008,
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}
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// keccakF1600 applies the Keccak permutation to a 1600b-wide
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// state represented as a slice of 25 uint64s.
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func keccakF1600(a *[25]uint64) {
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// Implementation translated from Keccak-inplace.c
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// in the keccak reference code.
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var t, bc0, bc1, bc2, bc3, bc4, d0, d1, d2, d3, d4 uint64
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for i := 0; i < 24; i += 4 {
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// Combines the 5 steps in each round into 2 steps.
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// Unrolls 4 rounds per loop and spreads some steps across rounds.
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// Round 1
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bc0 = a[0] ^ a[5] ^ a[10] ^ a[15] ^ a[20]
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bc1 = a[1] ^ a[6] ^ a[11] ^ a[16] ^ a[21]
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bc2 = a[2] ^ a[7] ^ a[12] ^ a[17] ^ a[22]
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bc3 = a[3] ^ a[8] ^ a[13] ^ a[18] ^ a[23]
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bc4 = a[4] ^ a[9] ^ a[14] ^ a[19] ^ a[24]
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d0 = bc4 ^ (bc1<<1 | bc1>>63)
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d1 = bc0 ^ (bc2<<1 | bc2>>63)
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d2 = bc1 ^ (bc3<<1 | bc3>>63)
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d3 = bc2 ^ (bc4<<1 | bc4>>63)
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d4 = bc3 ^ (bc0<<1 | bc0>>63)
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bc0 = a[0] ^ d0
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t = a[6] ^ d1
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bc1 = t<<44 | t>>(64-44)
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t = a[12] ^ d2
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bc2 = t<<43 | t>>(64-43)
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t = a[18] ^ d3
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bc3 = t<<21 | t>>(64-21)
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t = a[24] ^ d4
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bc4 = t<<14 | t>>(64-14)
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a[0] = bc0 ^ (bc2 &^ bc1) ^ rc[i]
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a[6] = bc1 ^ (bc3 &^ bc2)
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a[12] = bc2 ^ (bc4 &^ bc3)
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a[18] = bc3 ^ (bc0 &^ bc4)
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a[24] = bc4 ^ (bc1 &^ bc0)
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t = a[10] ^ d0
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bc2 = t<<3 | t>>(64-3)
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t = a[16] ^ d1
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bc3 = t<<45 | t>>(64-45)
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t = a[22] ^ d2
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bc4 = t<<61 | t>>(64-61)
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t = a[3] ^ d3
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bc0 = t<<28 | t>>(64-28)
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t = a[9] ^ d4
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bc1 = t<<20 | t>>(64-20)
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a[10] = bc0 ^ (bc2 &^ bc1)
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a[16] = bc1 ^ (bc3 &^ bc2)
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a[22] = bc2 ^ (bc4 &^ bc3)
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a[3] = bc3 ^ (bc0 &^ bc4)
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a[9] = bc4 ^ (bc1 &^ bc0)
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t = a[20] ^ d0
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bc4 = t<<18 | t>>(64-18)
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t = a[1] ^ d1
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bc0 = t<<1 | t>>(64-1)
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t = a[7] ^ d2
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bc1 = t<<6 | t>>(64-6)
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t = a[13] ^ d3
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bc2 = t<<25 | t>>(64-25)
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t = a[19] ^ d4
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bc3 = t<<8 | t>>(64-8)
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a[20] = bc0 ^ (bc2 &^ bc1)
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a[1] = bc1 ^ (bc3 &^ bc2)
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a[7] = bc2 ^ (bc4 &^ bc3)
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a[13] = bc3 ^ (bc0 &^ bc4)
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a[19] = bc4 ^ (bc1 &^ bc0)
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t = a[5] ^ d0
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bc1 = t<<36 | t>>(64-36)
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t = a[11] ^ d1
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bc2 = t<<10 | t>>(64-10)
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t = a[17] ^ d2
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bc3 = t<<15 | t>>(64-15)
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t = a[23] ^ d3
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bc4 = t<<56 | t>>(64-56)
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t = a[4] ^ d4
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bc0 = t<<27 | t>>(64-27)
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a[5] = bc0 ^ (bc2 &^ bc1)
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a[11] = bc1 ^ (bc3 &^ bc2)
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a[17] = bc2 ^ (bc4 &^ bc3)
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a[23] = bc3 ^ (bc0 &^ bc4)
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a[4] = bc4 ^ (bc1 &^ bc0)
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t = a[15] ^ d0
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bc3 = t<<41 | t>>(64-41)
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t = a[21] ^ d1
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bc4 = t<<2 | t>>(64-2)
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t = a[2] ^ d2
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bc0 = t<<62 | t>>(64-62)
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t = a[8] ^ d3
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bc1 = t<<55 | t>>(64-55)
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t = a[14] ^ d4
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bc2 = t<<39 | t>>(64-39)
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a[15] = bc0 ^ (bc2 &^ bc1)
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a[21] = bc1 ^ (bc3 &^ bc2)
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a[2] = bc2 ^ (bc4 &^ bc3)
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a[8] = bc3 ^ (bc0 &^ bc4)
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a[14] = bc4 ^ (bc1 &^ bc0)
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// Round 2
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bc0 = a[0] ^ a[5] ^ a[10] ^ a[15] ^ a[20]
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bc1 = a[1] ^ a[6] ^ a[11] ^ a[16] ^ a[21]
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bc2 = a[2] ^ a[7] ^ a[12] ^ a[17] ^ a[22]
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bc3 = a[3] ^ a[8] ^ a[13] ^ a[18] ^ a[23]
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bc4 = a[4] ^ a[9] ^ a[14] ^ a[19] ^ a[24]
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d0 = bc4 ^ (bc1<<1 | bc1>>63)
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d1 = bc0 ^ (bc2<<1 | bc2>>63)
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d2 = bc1 ^ (bc3<<1 | bc3>>63)
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d3 = bc2 ^ (bc4<<1 | bc4>>63)
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d4 = bc3 ^ (bc0<<1 | bc0>>63)
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bc0 = a[0] ^ d0
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t = a[16] ^ d1
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bc1 = t<<44 | t>>(64-44)
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t = a[7] ^ d2
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bc2 = t<<43 | t>>(64-43)
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t = a[23] ^ d3
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bc3 = t<<21 | t>>(64-21)
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t = a[14] ^ d4
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bc4 = t<<14 | t>>(64-14)
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a[0] = bc0 ^ (bc2 &^ bc1) ^ rc[i+1]
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a[16] = bc1 ^ (bc3 &^ bc2)
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a[7] = bc2 ^ (bc4 &^ bc3)
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a[23] = bc3 ^ (bc0 &^ bc4)
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a[14] = bc4 ^ (bc1 &^ bc0)
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t = a[20] ^ d0
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bc2 = t<<3 | t>>(64-3)
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t = a[11] ^ d1
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bc3 = t<<45 | t>>(64-45)
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t = a[2] ^ d2
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bc4 = t<<61 | t>>(64-61)
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t = a[18] ^ d3
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bc0 = t<<28 | t>>(64-28)
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t = a[9] ^ d4
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bc1 = t<<20 | t>>(64-20)
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a[20] = bc0 ^ (bc2 &^ bc1)
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a[11] = bc1 ^ (bc3 &^ bc2)
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a[2] = bc2 ^ (bc4 &^ bc3)
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a[18] = bc3 ^ (bc0 &^ bc4)
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a[9] = bc4 ^ (bc1 &^ bc0)
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t = a[15] ^ d0
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bc4 = t<<18 | t>>(64-18)
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t = a[6] ^ d1
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bc0 = t<<1 | t>>(64-1)
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t = a[22] ^ d2
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bc1 = t<<6 | t>>(64-6)
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t = a[13] ^ d3
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bc2 = t<<25 | t>>(64-25)
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t = a[4] ^ d4
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bc3 = t<<8 | t>>(64-8)
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a[15] = bc0 ^ (bc2 &^ bc1)
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a[6] = bc1 ^ (bc3 &^ bc2)
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a[22] = bc2 ^ (bc4 &^ bc3)
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a[13] = bc3 ^ (bc0 &^ bc4)
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a[4] = bc4 ^ (bc1 &^ bc0)
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t = a[10] ^ d0
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bc1 = t<<36 | t>>(64-36)
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t = a[1] ^ d1
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bc2 = t<<10 | t>>(64-10)
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t = a[17] ^ d2
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bc3 = t<<15 | t>>(64-15)
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t = a[8] ^ d3
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bc4 = t<<56 | t>>(64-56)
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t = a[24] ^ d4
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bc0 = t<<27 | t>>(64-27)
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a[10] = bc0 ^ (bc2 &^ bc1)
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a[1] = bc1 ^ (bc3 &^ bc2)
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a[17] = bc2 ^ (bc4 &^ bc3)
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a[8] = bc3 ^ (bc0 &^ bc4)
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a[24] = bc4 ^ (bc1 &^ bc0)
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t = a[5] ^ d0
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bc3 = t<<41 | t>>(64-41)
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t = a[21] ^ d1
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bc4 = t<<2 | t>>(64-2)
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t = a[12] ^ d2
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bc0 = t<<62 | t>>(64-62)
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t = a[3] ^ d3
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bc1 = t<<55 | t>>(64-55)
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t = a[19] ^ d4
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bc2 = t<<39 | t>>(64-39)
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a[5] = bc0 ^ (bc2 &^ bc1)
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a[21] = bc1 ^ (bc3 &^ bc2)
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a[12] = bc2 ^ (bc4 &^ bc3)
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a[3] = bc3 ^ (bc0 &^ bc4)
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a[19] = bc4 ^ (bc1 &^ bc0)
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// Round 3
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bc0 = a[0] ^ a[5] ^ a[10] ^ a[15] ^ a[20]
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bc1 = a[1] ^ a[6] ^ a[11] ^ a[16] ^ a[21]
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bc2 = a[2] ^ a[7] ^ a[12] ^ a[17] ^ a[22]
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bc3 = a[3] ^ a[8] ^ a[13] ^ a[18] ^ a[23]
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bc4 = a[4] ^ a[9] ^ a[14] ^ a[19] ^ a[24]
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d0 = bc4 ^ (bc1<<1 | bc1>>63)
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d1 = bc0 ^ (bc2<<1 | bc2>>63)
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d2 = bc1 ^ (bc3<<1 | bc3>>63)
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d3 = bc2 ^ (bc4<<1 | bc4>>63)
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d4 = bc3 ^ (bc0<<1 | bc0>>63)
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bc0 = a[0] ^ d0
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t = a[11] ^ d1
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bc1 = t<<44 | t>>(64-44)
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t = a[22] ^ d2
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bc2 = t<<43 | t>>(64-43)
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t = a[8] ^ d3
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bc3 = t<<21 | t>>(64-21)
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t = a[19] ^ d4
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bc4 = t<<14 | t>>(64-14)
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a[0] = bc0 ^ (bc2 &^ bc1) ^ rc[i+2]
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a[11] = bc1 ^ (bc3 &^ bc2)
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a[22] = bc2 ^ (bc4 &^ bc3)
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a[8] = bc3 ^ (bc0 &^ bc4)
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a[19] = bc4 ^ (bc1 &^ bc0)
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t = a[15] ^ d0
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bc2 = t<<3 | t>>(64-3)
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t = a[1] ^ d1
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bc3 = t<<45 | t>>(64-45)
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t = a[12] ^ d2
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bc4 = t<<61 | t>>(64-61)
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t = a[23] ^ d3
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bc0 = t<<28 | t>>(64-28)
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t = a[9] ^ d4
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bc1 = t<<20 | t>>(64-20)
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a[15] = bc0 ^ (bc2 &^ bc1)
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a[1] = bc1 ^ (bc3 &^ bc2)
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a[12] = bc2 ^ (bc4 &^ bc3)
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a[23] = bc3 ^ (bc0 &^ bc4)
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a[9] = bc4 ^ (bc1 &^ bc0)
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t = a[5] ^ d0
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bc4 = t<<18 | t>>(64-18)
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t = a[16] ^ d1
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bc0 = t<<1 | t>>(64-1)
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t = a[2] ^ d2
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bc1 = t<<6 | t>>(64-6)
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t = a[13] ^ d3
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bc2 = t<<25 | t>>(64-25)
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t = a[24] ^ d4
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bc3 = t<<8 | t>>(64-8)
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a[5] = bc0 ^ (bc2 &^ bc1)
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a[16] = bc1 ^ (bc3 &^ bc2)
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a[2] = bc2 ^ (bc4 &^ bc3)
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a[13] = bc3 ^ (bc0 &^ bc4)
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a[24] = bc4 ^ (bc1 &^ bc0)
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t = a[20] ^ d0
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bc1 = t<<36 | t>>(64-36)
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t = a[6] ^ d1
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bc2 = t<<10 | t>>(64-10)
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t = a[17] ^ d2
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bc3 = t<<15 | t>>(64-15)
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t = a[3] ^ d3
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bc4 = t<<56 | t>>(64-56)
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t = a[14] ^ d4
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bc0 = t<<27 | t>>(64-27)
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a[20] = bc0 ^ (bc2 &^ bc1)
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a[6] = bc1 ^ (bc3 &^ bc2)
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a[17] = bc2 ^ (bc4 &^ bc3)
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a[3] = bc3 ^ (bc0 &^ bc4)
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a[14] = bc4 ^ (bc1 &^ bc0)
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t = a[10] ^ d0
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bc3 = t<<41 | t>>(64-41)
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t = a[21] ^ d1
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bc4 = t<<2 | t>>(64-2)
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t = a[7] ^ d2
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bc0 = t<<62 | t>>(64-62)
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t = a[18] ^ d3
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bc1 = t<<55 | t>>(64-55)
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t = a[4] ^ d4
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bc2 = t<<39 | t>>(64-39)
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a[10] = bc0 ^ (bc2 &^ bc1)
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a[21] = bc1 ^ (bc3 &^ bc2)
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a[7] = bc2 ^ (bc4 &^ bc3)
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a[18] = bc3 ^ (bc0 &^ bc4)
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a[4] = bc4 ^ (bc1 &^ bc0)
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// Round 4
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bc0 = a[0] ^ a[5] ^ a[10] ^ a[15] ^ a[20]
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bc1 = a[1] ^ a[6] ^ a[11] ^ a[16] ^ a[21]
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bc2 = a[2] ^ a[7] ^ a[12] ^ a[17] ^ a[22]
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bc3 = a[3] ^ a[8] ^ a[13] ^ a[18] ^ a[23]
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bc4 = a[4] ^ a[9] ^ a[14] ^ a[19] ^ a[24]
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d0 = bc4 ^ (bc1<<1 | bc1>>63)
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d1 = bc0 ^ (bc2<<1 | bc2>>63)
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d2 = bc1 ^ (bc3<<1 | bc3>>63)
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d3 = bc2 ^ (bc4<<1 | bc4>>63)
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d4 = bc3 ^ (bc0<<1 | bc0>>63)
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|
bc0 = a[0] ^ d0
|
|||
|
t = a[1] ^ d1
|
|||
|
bc1 = t<<44 | t>>(64-44)
|
|||
|
t = a[2] ^ d2
|
|||
|
bc2 = t<<43 | t>>(64-43)
|
|||
|
t = a[3] ^ d3
|
|||
|
bc3 = t<<21 | t>>(64-21)
|
|||
|
t = a[4] ^ d4
|
|||
|
bc4 = t<<14 | t>>(64-14)
|
|||
|
a[0] = bc0 ^ (bc2 &^ bc1) ^ rc[i+3]
|
|||
|
a[1] = bc1 ^ (bc3 &^ bc2)
|
|||
|
a[2] = bc2 ^ (bc4 &^ bc3)
|
|||
|
a[3] = bc3 ^ (bc0 &^ bc4)
|
|||
|
a[4] = bc4 ^ (bc1 &^ bc0)
|
|||
|
|
|||
|
t = a[5] ^ d0
|
|||
|
bc2 = t<<3 | t>>(64-3)
|
|||
|
t = a[6] ^ d1
|
|||
|
bc3 = t<<45 | t>>(64-45)
|
|||
|
t = a[7] ^ d2
|
|||
|
bc4 = t<<61 | t>>(64-61)
|
|||
|
t = a[8] ^ d3
|
|||
|
bc0 = t<<28 | t>>(64-28)
|
|||
|
t = a[9] ^ d4
|
|||
|
bc1 = t<<20 | t>>(64-20)
|
|||
|
a[5] = bc0 ^ (bc2 &^ bc1)
|
|||
|
a[6] = bc1 ^ (bc3 &^ bc2)
|
|||
|
a[7] = bc2 ^ (bc4 &^ bc3)
|
|||
|
a[8] = bc3 ^ (bc0 &^ bc4)
|
|||
|
a[9] = bc4 ^ (bc1 &^ bc0)
|
|||
|
|
|||
|
t = a[10] ^ d0
|
|||
|
bc4 = t<<18 | t>>(64-18)
|
|||
|
t = a[11] ^ d1
|
|||
|
bc0 = t<<1 | t>>(64-1)
|
|||
|
t = a[12] ^ d2
|
|||
|
bc1 = t<<6 | t>>(64-6)
|
|||
|
t = a[13] ^ d3
|
|||
|
bc2 = t<<25 | t>>(64-25)
|
|||
|
t = a[14] ^ d4
|
|||
|
bc3 = t<<8 | t>>(64-8)
|
|||
|
a[10] = bc0 ^ (bc2 &^ bc1)
|
|||
|
a[11] = bc1 ^ (bc3 &^ bc2)
|
|||
|
a[12] = bc2 ^ (bc4 &^ bc3)
|
|||
|
a[13] = bc3 ^ (bc0 &^ bc4)
|
|||
|
a[14] = bc4 ^ (bc1 &^ bc0)
|
|||
|
|
|||
|
t = a[15] ^ d0
|
|||
|
bc1 = t<<36 | t>>(64-36)
|
|||
|
t = a[16] ^ d1
|
|||
|
bc2 = t<<10 | t>>(64-10)
|
|||
|
t = a[17] ^ d2
|
|||
|
bc3 = t<<15 | t>>(64-15)
|
|||
|
t = a[18] ^ d3
|
|||
|
bc4 = t<<56 | t>>(64-56)
|
|||
|
t = a[19] ^ d4
|
|||
|
bc0 = t<<27 | t>>(64-27)
|
|||
|
a[15] = bc0 ^ (bc2 &^ bc1)
|
|||
|
a[16] = bc1 ^ (bc3 &^ bc2)
|
|||
|
a[17] = bc2 ^ (bc4 &^ bc3)
|
|||
|
a[18] = bc3 ^ (bc0 &^ bc4)
|
|||
|
a[19] = bc4 ^ (bc1 &^ bc0)
|
|||
|
|
|||
|
t = a[20] ^ d0
|
|||
|
bc3 = t<<41 | t>>(64-41)
|
|||
|
t = a[21] ^ d1
|
|||
|
bc4 = t<<2 | t>>(64-2)
|
|||
|
t = a[22] ^ d2
|
|||
|
bc0 = t<<62 | t>>(64-62)
|
|||
|
t = a[23] ^ d3
|
|||
|
bc1 = t<<55 | t>>(64-55)
|
|||
|
t = a[24] ^ d4
|
|||
|
bc2 = t<<39 | t>>(64-39)
|
|||
|
a[20] = bc0 ^ (bc2 &^ bc1)
|
|||
|
a[21] = bc1 ^ (bc3 &^ bc2)
|
|||
|
a[22] = bc2 ^ (bc4 &^ bc3)
|
|||
|
a[23] = bc3 ^ (bc0 &^ bc4)
|
|||
|
a[24] = bc4 ^ (bc1 &^ bc0)
|
|||
|
}
|
|||
|
}
|