Decrypt an object with DES : DES « Security « Java

Decrypt an object with DES


import javax.crypto.Cipher;
import javax.crypto.SealedObject;
import javax.crypto.SecretKey;

public class Main {
  private static Object readFromFile(String filename) throws Exception {
    ObjectInputStream ois = new ObjectInputStream(new FileInputStream(new File(filename)));
    Object object = ois.readObject();
    return object;

  public static void main(String[] args) throws Exception {
    SecretKey key = (SecretKey) readFromFile("secretkey.dat");
    SealedObject sealedObject = (SealedObject) readFromFile("sealed.dat");
    String algorithmName = sealedObject.getAlgorithm();
    Cipher cipher = Cipher.getInstance(algorithmName);
    cipher.init(Cipher.DECRYPT_MODE, key);
    String text = (String) sealedObject.getObject(cipher);
    System.out.println("Text = " + text);


Related examples in the same category

1.DES Crypter and Decrypter
2.Encrypt an object with DES
3.Encrypting a String with DES
4.Encrypting an Object with DES
5.Encrypting a File or Stream with DES
6.Triple DES
7.Encrypting with DES Using a Pass Phrase
8.DES Engine
9.DES algorithm
10.Des Encrypter
11.DES Decrypt
12.DES Encrypt