Here you can find the source of decrypt(byte[] key, byte[] src)
private static byte[] decrypt(byte[] key, byte[] src) throws Exception
//package com.java2s; import javax.crypto.Cipher; import javax.crypto.spec.IvParameterSpec; import javax.crypto.spec.SecretKeySpec; public class Main { private static byte[] iv = { 1, 2, 3, 4, 5, 6, 7, 8 }; private static byte[] decrypt(byte[] key, byte[] src) throws Exception { IvParameterSpec zeroIv = new IvParameterSpec(iv); SecretKeySpec spec = new SecretKeySpec(key, "DES"); Cipher cipher = Cipher.getInstance("DES/CBC/PKCS5Padding"); cipher.init(Cipher.DECRYPT_MODE, spec, zeroIv); return cipher.doFinal(src); }/*from ww w.j a va 2 s . c o m*/ }