Java tutorial
//package com.java2s; //License from project: Apache License import javax.crypto.Cipher; import javax.crypto.spec.SecretKeySpec; public class Main { private static byte[] Aes(byte[] byteData, byte[] byteKey, int opmode) throws Exception { Cipher cipher = null; try { SecretKeySpec aesKey = new SecretKeySpec(byteKey, "AES"); cipher = Cipher.getInstance("AES/ECB/PKCS5Padding"); cipher.init(opmode, aesKey); return cipher.doFinal(byteData); } finally { cipher = null; } } }