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go/doc/talks/io2010/encrypt.go
Andrew Gerrand ba91dac3a9 doc: gofix io2010 demo programs
R=golang-dev, gri, r, agl
CC=golang-dev
https://golang.org/cl/4696046
2011-07-13 09:40:49 +10:00

29 lines
641 B
Go

// Copyright 2010 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.
package main
import (
"crypto/aes"
"crypto/cipher"
"compress/gzip"
"io"
"os"
)
func EncryptAndGzip(dstfile, srcfile string, key, iv []byte) {
r, _ := os.Open(srcfile)
var w io.WriteCloser
w, _ = os.Create(dstfile)
defer w.Close()
w, _ = gzip.NewWriter(w)
defer w.Close()
c, _ := aes.NewCipher(key)
io.Copy(cipher.StreamWriter{S: cipher.NewOFB(c, iv), W: w}, r)
}
func main() {
EncryptAndGzip("/tmp/passwd.gz", "/etc/passwd", make([]byte, 16), make([]byte, 16))
}