Java tutorial
//package com.java2s; import javax.crypto.Cipher; import javax.crypto.SecretKey; import javax.crypto.spec.SecretKeySpec; public class Main { public static byte[] decrypt(byte[] data, byte[] key) throws Exception { SecretKey secretKey = new SecretKeySpec(key, "DESede"); Cipher cipher = Cipher.getInstance("DESede/ECB/PKCS5Padding"); cipher.init(Cipher.DECRYPT_MODE, secretKey); byte[] plainBytes = cipher.doFinal(data); return plainBytes; } }