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author | Christopher Speller <crspeller@gmail.com> | 2016-05-12 23:56:07 -0400 |
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committer | Christopher Speller <crspeller@gmail.com> | 2016-05-12 23:56:07 -0400 |
commit | 38ee83e45b4de7edf89bf9f0ef629eb4c6ad0fa8 (patch) | |
tree | a4fde09672192b97d453ad605b030bd5a10c5a45 /vendor/golang.org/x/crypto/sha3/xor_unaligned.go | |
parent | 84d2482ddbff9564c9ad75b2d30af66e3ddfd44d (diff) | |
download | chat-38ee83e45b4de7edf89bf9f0ef629eb4c6ad0fa8.tar.gz chat-38ee83e45b4de7edf89bf9f0ef629eb4c6ad0fa8.tar.bz2 chat-38ee83e45b4de7edf89bf9f0ef629eb4c6ad0fa8.zip |
Moving to glide
Diffstat (limited to 'vendor/golang.org/x/crypto/sha3/xor_unaligned.go')
-rw-r--r-- | vendor/golang.org/x/crypto/sha3/xor_unaligned.go | 58 |
1 files changed, 58 insertions, 0 deletions
diff --git a/vendor/golang.org/x/crypto/sha3/xor_unaligned.go b/vendor/golang.org/x/crypto/sha3/xor_unaligned.go new file mode 100644 index 000000000..929a486a7 --- /dev/null +++ b/vendor/golang.org/x/crypto/sha3/xor_unaligned.go @@ -0,0 +1,58 @@ +// 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 ppc64le +// +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" |