try {
ObjectInputStream ois = new ObjectInputStream(
new FileInputStream("keyfile"));
DESKeySpec ks = new DESKeySpec((byte[]) ois.readObject());
SecretKeyFactory skf = SecretKeyFactory.getInstance("DES");
SecretKey key = skf.generateSecret(ks);
Cipher c = Cipher.getInstance("DES/CFB8/NoPadding");
c.init(Cipher.DECRYPT_MODE, key,
new IvParameterSpec((byte[]) ois.readObject()));
CipherInputStream cis = new CipherInputStream(
new FileInputStream("ciphertext"), c);
BufferedReader br = new BufferedReader(
new InputStreamReader(cis));
System.out.println("Got message");
System.out.println(br.readLine());
} catch (Exception e) {
System.out.println(e);
}
