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