try {
KeyGenerator kg = KeyGenerator.getInstance("DES");
kg.init(new SecureRandom());
SecretKey key = kg.generateKey();
SecretKeyFactory skf = SecretKeyFactory.getInstance("DES");
Class spec = Class.forName("javax.crypto.spec.DESKeySpec");
DESKeySpec ks = (DESKeySpec) skf.getKeySpec(key, spec);
ObjectOutputStream oos = new ObjectOutputStream(
new FileOutputStream("keyfile"));
oos.writeObject(ks.getKey());
Cipher c = Cipher.getInstance("DES/CFB8/NoPadding");
c.init(Cipher.ENCRYPT_MODE, key);
CipherOutputStream cos = new CipherOutputStream(
new FileOutputStream("ciphertext"), c);
PrintWriter pw = new PrintWriter(
new OutputStreamWriter(cos));
pw.println("Stand and unfold yourself");
pw.close();
oos.writeObject(c.getIV());
oos.close();
} catch (Exception e) {
System.out.println(e);
}
