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// 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/block"
"compress/gzip"
"io"
"os"
)
func EncryptAndGzip(dstfile, srcfile string, key, iv []byte) {
r, _ := os.Open(srcfile, os.O_RDONLY, 0)
var w io.Writer
w, _ = os.Open(dstfile, os.O_WRONLY|os.O_CREATE, 0666)
c, _ := aes.NewCipher(key)
w = block.NewOFBWriter(c, iv, w)
w2, _ := gzip.NewDeflater(w)
io.Copy(w2, r)
w2.Close()
}
func DecryptAndGunzip(dstfile, srcfile string, key, iv []byte) {
f, _ := os.Open(srcfile, os.O_RDONLY, 0)
defer f.Close()
c, _ := aes.NewCipher(key)
r := block.NewOFBReader(c, iv, f)
r, _ = gzip.NewInflater(r)
w, _ := os.Open(dstfile, os.O_WRONLY|os.O_CREATE, 0666)
defer w.Close()
io.Copy(w, r)
}
func main() {
EncryptAndGzip("/tmp/passwd.gz", "/etc/passwd", make([]byte, 16), make([]byte, 16))
DecryptAndGunzip("/dev/stdout", "/tmp/passwd.gz", make([]byte, 16), make([]byte, 16))
}
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