Password Based Encryption With MD5 and DES algorithms

package com.pavan.text.encryption;

import javax.crypto.Cipher;
import javax.crypto.SecretKey;
import javax.crypto.SecretKeyFactory;
import javax.crypto.spec.PBEKeySpec;
import javax.crypto.spec.PBEParameterSpec;

import sun.misc.BASE64Decoder;
import sun.misc.BASE64Encoder;

/**
*
* @author pgupta
*
*/
public class PasswordTest {
//Predefined key for encryption and decryption.
public static final String key = "PaVaNkUmArGuPtA";

public static void main(String[] args) {
 PasswordTest pt = new PasswordTest();
 String encryptedString = pt.Encrypt("pgupta");
 System.out.println("encryptedString:    "+encryptedString);

 String decryptedString = pt.Decrypt(encryptedString);
 System.out.println("decryptedString:    "+decryptedString);
}

/**
 * Encrypts the given string using Password Based Encryption With MD5 and DES algorithm.
 * @param password
 * @return
 */
public String Encrypt(String password){
 PBEKeySpec pbeKeySpec;
    PBEParameterSpec pbeParamSpec;
    SecretKeyFactory keyFac;  
    // Salt
    byte[] salt = {
      (byte)0xc7, (byte)0x73, (byte)0x21, (byte)0x8c,
      (byte)0x7e, (byte)0xc8, (byte)0xee, (byte)0x99
      };  
    // Iteration count  
    int count = 20;  
    try {
    // Create PBE parameter set
    pbeParamSpec = new PBEParameterSpec(salt, count);
    pbeKeySpec = new PBEKeySpec(PasswordTest.key.toCharArray());  
    keyFac = SecretKeyFactory.getInstance("PBEWithMD5AndDES");  
    SecretKey pbeKey = keyFac.generateSecret(pbeKeySpec);  
    // Create PBE Cipher  
    Cipher pbeCipher = Cipher.getInstance("PBEWithMD5AndDES");  
    // Initialize PBE Cipher with key and parameters  
    pbeCipher.init(Cipher.ENCRYPT_MODE, pbeKey, pbeParamSpec);  
    // Our cleartext  
    byte[] cleartext = password.getBytes();  
    // Encrypt the cleartext  
    byte[] encryptedPassword = pbeCipher.doFinal(cleartext);
    String hash = (new BASE64Encoder()).encode(encryptedPassword);
    return hash;

    } catch (Exception e) {

 }
    return null;
}

/**
 * Decrypts the given string using Password Based Decryption With MD5 and DES algorithm.
 * @param encryptedPassword
 * @return
 */
public String Decrypt(String encryptedPassword){
 try {
     PBEKeySpec pbeKeySpec;
     PBEParameterSpec pbeParamSpec;
     SecretKeyFactory keyFac;  
     // Salt
     byte[] salt = {
       (byte)0xc7, (byte)0x73, (byte)0x21, (byte)0x8c,
       (byte)0x7e, (byte)0xc8, (byte)0xee, (byte)0x99
       };  
     // Iteration count  
     int count = 20;  
     // Create PBE parameter set
     pbeParamSpec = new PBEParameterSpec(salt, count);
     pbeKeySpec = new PBEKeySpec(PasswordTest.key.toCharArray());  
     keyFac = SecretKeyFactory.getInstance("PBEWithMD5AndDES");  
     SecretKey pbeKey = keyFac.generateSecret(pbeKeySpec);  
     // Create PBE Cipher  
     Cipher pbeCipher = Cipher.getInstance("PBEWithMD5AndDES");  
     // Initialize PBE Cipher with key and parameters  
     pbeCipher.init(Cipher.ENCRYPT_MODE, pbeKey, pbeParamSpec);  
  
     //decrypt
     pbeCipher.init(Cipher.DECRYPT_MODE, pbeKey, pbeParamSpec);
     byte hash[] = (new BASE64Decoder()).decodeBuffer(encryptedPassword);

     byte[] decryptPassword = pbeCipher.doFinal(hash);
     return new String(decryptPassword);
 } catch (Exception e) {

 }
 return null;
}


}