mirror of https://gogs.blitter.com/RLabs/xs
34 lines
901 B
Go
34 lines
901 B
Go
// Copyright (c) 2016 Andreas Auernhammer. All rights reserved.
|
|
// Use of this source code is governed by a license that can be
|
|
// found in the LICENSE file.
|
|
|
|
// +build !amd64,!386 gccgo appengine nacl
|
|
|
|
package chacha
|
|
|
|
import "encoding/binary"
|
|
|
|
func init() {
|
|
useSSE2 = false
|
|
useSSSE3 = false
|
|
useAVX = false
|
|
useAVX2 = false
|
|
}
|
|
|
|
func initialize(state *[64]byte, key []byte, nonce *[16]byte) {
|
|
binary.LittleEndian.PutUint32(state[0:], sigma[0])
|
|
binary.LittleEndian.PutUint32(state[4:], sigma[1])
|
|
binary.LittleEndian.PutUint32(state[8:], sigma[2])
|
|
binary.LittleEndian.PutUint32(state[12:], sigma[3])
|
|
copy(state[16:], key[:])
|
|
copy(state[48:], nonce[:])
|
|
}
|
|
|
|
func xorKeyStream(dst, src []byte, block, state *[64]byte, rounds int) int {
|
|
return xorKeyStreamGeneric(dst, src, block, state, rounds)
|
|
}
|
|
|
|
func hChaCha20(out *[32]byte, nonce *[16]byte, key *[32]byte) {
|
|
hChaCha20Generic(out, nonce, key)
|
|
}
|