Simple Encryption

Question

Hi All, I want to encrypt a simple text as given in the example below BUT I am getting 'java.lang.NoSuchMethodError' Exception at the Cipher.getInstance("DES") method.
Please help me or give me some references.
Write me at [email protected]
This is the test code -
Cipher desCipher;
byte[] desKeyData = { (byte)0x01, (byte)0x02, (byte)0x03,..};
SecretKeySpec desKey = new SecretKeySpec(desKeyData, "DES");
// Getting Exception at this point
desCipher = Cipher.getInstance("DES");
desCipher.init(Cipher.ENCRYPT_MODE, desKey);
// Our cleartext
byte[] cleartext = "This is just an example".getBytes();
// Encrypt the cleartext
byte[] ciphertext = desCipher.doFinal(cleartext);
// Initialize the same cipher for decryption
desCipher.init(Cipher.DECRYPT_MODE, desKey);
// Decrypt the ciphertext
byte[] cleartext1 = desCipher.doFinal(ciphertext);

Answer 1

try this:
import javax.crypto.Cipher;
import javax.crypto.CipherInputStream;
import javax.crypto.CipherOutputStream;
import javax.crypto.SealedObject;
import java.security.*;
import java.io.*;
import javax.crypto.*;
import javax.crypto.KeyGenerator;
import javax.crypto.SecretKey;
import javax.crypto.SecretKeyFactory;
import javax.crypto.KeyAgreement;
import javax.swing.*;
public class encryptTest
public static void main(String args[])
String password = JOptionPane.showInputDialog(null,"Plz Enter Any word to Encrypt");
Security.addProvider(new com.sun.crypto.provider.SunJCE());
try
KeyGenerator kg = KeyGenerator.getInstance("DES");
Key key = kg.generateKey();
Cipher cipher = Cipher.getInstance("DES");
cipher.init(Cipher.ENCRYPT_MODE,key);
byte[] encrypted_password = cipher.doFinal(password.getBytes());
JOptionPane.showMessageDialog(null,"Encrypted Password "+ new String(encrypted_password));
cipher.init(Cipher.DECRYPT_MODE,key);
byte[] decrypted_password = cipher.doFinal(encrypted_password);
JOptionPane.showMessageDialog(null,"Decrypted Password "+new String(decrypted_password));
catch(NoSuchAlgorithmException nsae)
System.out.println("No Such Algorithm Exception " + nsae.getMessage());
catch(NoSuchPaddingException nspe)
System.out.println("No Such Padding Exception " + nspe.getMessage());
catch(InvalidKeyException ike)
System.out.println("Invalid Key Exception " + ike.getMessage());
catch(IllegalStateException ise)
System.out.println("Illegal State Exception " + ise.getMessage());
catch(IllegalBlockSizeException ibse)
System.out.println("Illegal Block Size Exception " + ibse.getMessage());
catch(BadPaddingException bpe)
System.out.println("Bad Padding Exception " + bpe.getMessage());