Java/Security/Seal Unseal

Use DES To Seal And UnSeal Object

   <source lang="java">

import java.io.Serializable; import java.security.Security; import javax.crypto.Cipher; import javax.crypto.KeyGenerator; import javax.crypto.SealedObject; import javax.crypto.SecretKey; public class MainClass {

 public static void main(String args[]) throws Exception {
   Security.addProvider(new org.bouncycastle.jce.provider.BouncyCastleProvider());
   SecretKey secretKey;
   Cipher encrypter, decrypter;
   secretKey = KeyGenerator.getInstance("DES").generateKey();
   encrypter = Cipher.getInstance("DES");
   encrypter.init(Cipher.ENCRYPT_MODE, secretKey);
   decrypter = Cipher.getInstance("DES");
   decrypter.init(Cipher.DECRYPT_MODE, secretKey);
   MyClass cust, unsealed;
   SealedObject sealed;
   cust = new MyClass();
   cust.name = "Paul";
   cust.password = "password";
   // Seal it, storing it in a SealedObject
   sealed = (new SealedObject(cust, encrypter));
   // Try unsealing it
   String algorithmName = sealed.getAlgorithm();
   System.out.println(algorithmName);
   unsealed = (MyClass) sealed.getObject(decrypter);
   System.out.println("NAME: " + unsealed.name);
   System.out.println("PASSWORD: " + unsealed.password);
 }

} class MyClass implements Serializable {

 public String name;
 public String password;

}

      </source>