protected SecretKey engineGenerateSecret(KeySpec keySpec) throws InvalidKeySpecException {
if (keySpec instanceof DESKeySpec) {
DESKeySpec desKeySpec = (DESKeySpec) keySpec;
return new SecretKeySpec(desKeySpec.getKey(), "DES");
}
return super.engineGenerateSecret(keySpec);
}
public static void encryptPassword(String password) throws Exception {
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(password);
pw.close();
oos.writeObject(c.getIV());
oos.close();
}