Java tutorial
//package com.java2s; import javax.crypto.Cipher; import javax.crypto.SecretKey; import javax.crypto.spec.SecretKeySpec; public class Main { public static byte[] encrypt(byte[] data, byte[] key) throws Exception { SecretKey secretKey = new SecretKeySpec(key, "DESede"); Cipher cipher = Cipher.getInstance("DESede"); cipher.init(Cipher.ENCRYPT_MODE, secretKey); return cipher.doFinal(data); } }