59 lines
1.0 KiB
Go
59 lines
1.0 KiB
Go
// Copyright 2015 The Go Authors. All rights reserved.
|
|
// Use of this source code is governed by a BSD-style
|
|
// license that can be found in the LICENSE file.
|
|
|
|
// +build amd64 386
|
|
// +build !appengine
|
|
|
|
package sha3
|
|
|
|
import "unsafe"
|
|
|
|
func xorInUnaligned(d *state, buf []byte) {
|
|
bw := (*[maxRate / 8]uint64)(unsafe.Pointer(&buf[0]))
|
|
n := len(buf)
|
|
if n >= 72 {
|
|
d.a[0] ^= bw[0]
|
|
d.a[1] ^= bw[1]
|
|
d.a[2] ^= bw[2]
|
|
d.a[3] ^= bw[3]
|
|
d.a[4] ^= bw[4]
|
|
d.a[5] ^= bw[5]
|
|
d.a[6] ^= bw[6]
|
|
d.a[7] ^= bw[7]
|
|
d.a[8] ^= bw[8]
|
|
}
|
|
if n >= 104 {
|
|
d.a[9] ^= bw[9]
|
|
d.a[10] ^= bw[10]
|
|
d.a[11] ^= bw[11]
|
|
d.a[12] ^= bw[12]
|
|
}
|
|
if n >= 136 {
|
|
d.a[13] ^= bw[13]
|
|
d.a[14] ^= bw[14]
|
|
d.a[15] ^= bw[15]
|
|
d.a[16] ^= bw[16]
|
|
}
|
|
if n >= 144 {
|
|
d.a[17] ^= bw[17]
|
|
}
|
|
if n >= 168 {
|
|
d.a[18] ^= bw[18]
|
|
d.a[19] ^= bw[19]
|
|
d.a[20] ^= bw[20]
|
|
}
|
|
}
|
|
|
|
func copyOutUnaligned(d *state, buf []byte) {
|
|
ab := (*[maxRate]uint8)(unsafe.Pointer(&d.a[0]))
|
|
copy(buf, ab[:])
|
|
}
|
|
|
|
var (
|
|
xorIn = xorInUnaligned
|
|
copyOut = copyOutUnaligned
|
|
)
|
|
|
|
const xorImplementationUnaligned = "unaligned"
|