Java

public class TripleDES {
 public static final String DES_PROVIDER = "SunJCE";
    public static final int DES_KEYSIZE = 112;
    public static final byte SEED[] = "15454432999".getBytes();
    
    public final static String ENCODED_PASSWORD_PREFIX = "enc";
    
    private static TripleDES _me=new TripleDES();
    
    private TripleDES() {};
    
    public static TripleDES getInstance() {
     return _me;
    }
    
    

    public String encrypt(String code) {
     return encrypt(code, null);
    }
    
 private String encrypt(String code, SecureRandom sr){
        SecureRandom rng;
        KeyGenerator keyGen;
        Key key;
        Cipher cipher;
        byte[] byteData = code.getBytes();

        if(sr == null) rng = new SecureRandom(SEED);
        else rng = sr;

        try{
           keyGen = KeyGenerator.getInstance("DESede", DES_PROVIDER);
            keyGen.init(DES_KEYSIZE, rng);
            key = keyGen.generateKey();

            cipher = Cipher.getInstance("DESede/ECB/PKCS5Padding", DES_PROVIDER);

            cipher.init(Cipher.ENCRYPT_MODE, key);

            return new sun.misc.BASE64Encoder().encode(cipher.doFinal(byteData));
        }catch(NoSuchProviderException npro){
        }catch(NoSuchAlgorithmException nalg){
        }catch(NoSuchPaddingException npad){
        }catch(InvalidKeyException inv){
        }catch(BadPaddingException bad){
        }catch(IllegalBlockSizeException ile){
        }

        return null;
 }

 public String decrypt(String code){
  return decrypt(code, null);
 }
 
 private String decrypt(String code, SecureRandom sr){
        SecureRandom rng;
        KeyGenerator keyGen;
        Key key;
        Cipher cipher;

        if(sr == null) rng = new SecureRandom(SEED);
        else rng = sr;

        try{
            keyGen = KeyGenerator.getInstance("DESede", DES_PROVIDER);
            keyGen.init(DES_KEYSIZE, rng);
            key = keyGen.generateKey();

            cipher = Cipher.getInstance("DESede/ECB/PKCS5Padding", DES_PROVIDER);

            cipher.init(Cipher.DECRYPT_MODE, key);
            
            byte[] codeBytes = new sun.misc.BASE64Decoder().decodeBuffer(code);
            
            byte[] text = cipher.doFinal(codeBytes);
            return new String(text);
        }catch(NoSuchProviderException npro){
         npro.printStackTrace();
        }catch(NoSuchAlgorithmException nalg){
         nalg.printStackTrace();
        }catch(NoSuchPaddingException npad){
         npad.printStackTrace();
        }catch(InvalidKeyException inv){
         inv.printStackTrace();
        }catch(BadPaddingException bad){
         bad.printStackTrace();
        }catch(IllegalBlockSizeException ile){
         ile.printStackTrace();
        } catch(Exception e) {
         e.printStackTrace();
        }

        return null;
    }

}

# posted by Tomer Ben David @ 1:19 AM