Minecraft Lastlogin Decrypter

import java.io.*;
import javax.crypto.*;
import java.util.*;
import javax.crypto.spec.*;

public class test
{


public static void main(String[] args)
{
new test();
}
public String user = "";
public String pass = "";

public test()
{
readUsername();
System.out.println(user+" "+pass);
}


  private void readUsername() {
    try {
      //File lastLogin = new File(Util.getWorkingDirectory(), "lastlogin");
File lastLogin = new File("./lastlogin");
      Cipher cipher = getCipher(2, "passwordfile");
      DataInputStream dis;
      if (cipher != null)
        dis = new DataInputStream(new CipherInputStream(new FileInputStream(lastLogin), cipher));
      else {
        dis = new DataInputStream(new FileInputStream(lastLogin));
      }
      user = dis.readUTF();
      pass = dis.readUTF();
      dis.close();
    } catch (Exception e) {
      e.printStackTrace();
    }
  }
 private Cipher getCipher(int mode, String password) throws Exception {
    Random random = new Random(43287234L);
    byte[] salt = new byte[8];
    random.nextBytes(salt);
    PBEParameterSpec pbeParamSpec = new PBEParameterSpec(salt, 5);

    SecretKey pbeKey = SecretKeyFactory.getInstance("PBEWithMD5AndDES").generateSecret(new PBEKeySpec(password.toCharArray()));
    Cipher cipher = Cipher.getInstance("PBEWithMD5AndDES");
    cipher.init(mode, pbeKey, pbeParamSpec);
    return cipher;
  }

}