1// Copyright 2012 The Go Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style
3// license that can be found in the LICENSE file.
4
5// +build amd64,!appengine,!gccgo
6
7package salsa
8
9//go:noescape
10
11// salsa2020XORKeyStream is implemented in salsa20_amd64.s.
12func salsa2020XORKeyStream(out, in *byte, n uint64, nonce, key *byte)
13
14// XORKeyStream crypts bytes from in to out using the given key and counters.
15// In and out must overlap entirely or not at all. Counter
16// contains the raw salsa20 counter bytes (both nonce and block counter).
17func XORKeyStream(out, in []byte, counter *[16]byte, key *[32]byte) {
18	if len(in) == 0 {
19		return
20	}
21	_ = out[len(in)-1]
22	salsa2020XORKeyStream(&out[0], &in[0], uint64(len(in)), &counter[0], &key[0])
23}
24