鏡像自
https://github.com/henrydcase/nobs.git
synced 2024-11-22 15:18:57 +00:00
Henry Case
820906b7c7
* complate reset of the SHA-3 code. Affects mostly the code in sha3.go * fixes a bug which causes SHAKE implementation to crash * implementation of Read()/Write() avoid unnecessary buffering as much as possible * NOTE: at some point I've done separated implementation for SumXXX, functions, but after optimizing implementation of Read/Write/Sum, the gain wasn't that big Current speed on Initial speed on i7-8665U@1.90 BenchmarkPermutationFunction 1592787 736 ns/op 271.90 MB/s 0 B/op 0 allocs/op BenchmarkSha3Chunk_x01/SHA-3/224 98752 11630 ns/op 176.02 MB/s 0 B/op 0 allocs/op BenchmarkSha3Chunk_x01/SHA-3/256 92508 12447 ns/op 164.46 MB/s 0 B/op 0 allocs/op BenchmarkSha3Chunk_x01/SHA-3/384 76765 15206 ns/op 134.62 MB/s 0 B/op 0 allocs/op BenchmarkSha3Chunk_x01/SHA-3/512 54333 21932 ns/op 93.33 MB/s 0 B/op 0 allocs/op BenchmarkSha3Chunk_x16/SHA-3/224 10000 102161 ns/op 160.37 MB/s 0 B/op 0 allocs/op BenchmarkSha3Chunk_x16/SHA-3/256 10000 106531 ns/op 153.80 MB/s 0 B/op 0 allocs/op BenchmarkSha3Chunk_x16/SHA-3/384 8641 137272 ns/op 119.35 MB/s 0 B/op 0 allocs/op BenchmarkSha3Chunk_x16/SHA-3/512 6340 189124 ns/op 86.63 MB/s 0 B/op 0 allocs/op BenchmarkShake_x01/SHAKE-128 167062 7149 ns/op 188.83 MB/s 0 B/op 0 allocs/op BenchmarkShake_x01/SHAKE-256 151982 7748 ns/op 174.24 MB/s 0 B/op 0 allocs/op BenchmarkShake_x16/SHAKE-128 12963 87770 ns/op 186.67 MB/s 0 B/op 0 allocs/op BenchmarkShake_x16/SHAKE-256 10000 105554 ns/op 155.22 MB/s 0 B/op 0 allocs/op BenchmarkCShake/cSHAKE-128 109148 10940 ns/op 187.11 MB/s 0 B/op 0 allocs/op BenchmarkCShake/cSHAKE-256 90324 13211 ns/op 154.94 MB/s 0 B/op 0 allocs/op PASS
69 行
1.3 KiB
Go
69 行
1.3 KiB
Go
// Copyright 2015 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 386 ppc64le
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// +build !appengine
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package sha3
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import (
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"unsafe"
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)
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// A storageBuf is an aligned array of maxRate bytes.
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type storageBuf [maxRate / 8]uint64
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func (b *storageBuf) asBytes() *[maxRate]byte {
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return (*[maxRate]byte)(unsafe.Pointer(b))
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}
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func xorInUnaligned(d *state, buf []byte) {
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n := len(buf)
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bw := (*[maxRate / 8]uint64)(unsafe.Pointer(&buf[0]))[: n/8 : n/8]
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if n >= 72 {
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d.a[0] ^= bw[0]
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d.a[1] ^= bw[1]
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d.a[2] ^= bw[2]
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d.a[3] ^= bw[3]
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d.a[4] ^= bw[4]
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d.a[5] ^= bw[5]
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d.a[6] ^= bw[6]
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d.a[7] ^= bw[7]
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d.a[8] ^= bw[8]
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}
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if n >= 104 {
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d.a[9] ^= bw[9]
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d.a[10] ^= bw[10]
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d.a[11] ^= bw[11]
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d.a[12] ^= bw[12]
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}
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if n >= 136 {
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d.a[13] ^= bw[13]
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d.a[14] ^= bw[14]
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d.a[15] ^= bw[15]
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d.a[16] ^= bw[16]
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}
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if n >= 144 {
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d.a[17] ^= bw[17]
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}
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if n >= 168 {
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d.a[18] ^= bw[18]
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d.a[19] ^= bw[19]
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d.a[20] ^= bw[20]
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}
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}
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func copyOutUnaligned(d *state, buf []byte) {
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ab := (*[maxRate]uint8)(unsafe.Pointer(&d.a[0]))
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copy(buf, ab[:])
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}
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// TODO: remove this assignment
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var (
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xorIn = xorInUnaligned
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copyOut = copyOutUnaligned
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)
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const xorImplementationUnaligned = "unaligned"
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