route/vendor/github.com/aead/chacha20/chacha/chacha_ref.go

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2017-12-12 02:51:45 +00:00
// 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 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)
}