Here you can find the source of encrypt(byte[] key, byte[] src)
private static byte[] encrypt(byte[] key, byte[] src) throws Exception
//package com.java2s; import javax.crypto.Cipher; import javax.crypto.spec.SecretKeySpec; public class Main { private static byte[] encrypt(byte[] key, byte[] src) throws Exception { SecretKeySpec skeySpec = new SecretKeySpec(key, "AES"); Cipher cipher = Cipher.getInstance("AES/ECB/PKCS5Padding"); cipher.init(Cipher.ENCRYPT_MODE, skeySpec); return cipher.doFinal(src); }//from w w w . j a va2 s. co m }