mirror of
https://github.com/autc04/Retro68.git
synced 2024-11-28 05:51:04 +00:00
49 lines
1.0 KiB
Go
49 lines
1.0 KiB
Go
// Copyright 2012 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
|
|
|
|
package aes
|
|
|
|
// defined in asm_$GOARCH.s
|
|
func hasAsm() bool
|
|
func encryptBlockAsm(nr int, xk *uint32, dst, src *byte)
|
|
func decryptBlockAsm(nr int, xk *uint32, dst, src *byte)
|
|
func expandKeyAsm(nr int, key *byte, enc *uint32, dec *uint32)
|
|
|
|
var useAsm = hasAsm()
|
|
|
|
func encryptBlock(xk []uint32, dst, src []byte) {
|
|
if useAsm {
|
|
encryptBlockAsm(len(xk)/4-1, &xk[0], &dst[0], &src[0])
|
|
} else {
|
|
encryptBlockGo(xk, dst, src)
|
|
}
|
|
}
|
|
|
|
func decryptBlock(xk []uint32, dst, src []byte) {
|
|
if useAsm {
|
|
decryptBlockAsm(len(xk)/4-1, &xk[0], &dst[0], &src[0])
|
|
} else {
|
|
decryptBlockGo(xk, dst, src)
|
|
}
|
|
}
|
|
|
|
func expandKey(key []byte, enc, dec []uint32) {
|
|
if useAsm {
|
|
rounds := 10
|
|
switch len(key) {
|
|
case 128 / 8:
|
|
rounds = 10
|
|
case 192 / 8:
|
|
rounds = 12
|
|
case 256 / 8:
|
|
rounds = 14
|
|
}
|
|
expandKeyAsm(rounds, &key[0], &enc[0], &dec[0])
|
|
} else {
|
|
expandKeyGo(key, enc, dec)
|
|
}
|
|
}
|