/**
 * CBC加密
* @param key 金鑰  3 * 8位
* @param keyiv IV 8位
 * @param data 明文
* @return Base64編碼的密文
* @throws Exception
 */
public static byte[] des3EncodeCBC(byte[] key, byte[] keyiv, byte[] data) throws Exception {
   Key deskey = null;
DESedeKeySpec spec = new DESedeKeySpec(key);
SecretKeyFactory keyfactory = SecretKeyFactory.getInstance
 
("desede");
deskey = keyfactory.generateSecret(spec);
Cipher cipher = Cipher.getInstance("desede" + "/CBC/PKCS5Padding");
IvParameterSpec ips = new IvParameterSpec(keyiv);
cipher.init(Cipher.ENCRYPT_MODE, deskey, ips);
   byte[] bOut = cipher.doFinal(data);
   return bOut;
}
/**
 * 解密
* @param key
* @param 
 
keyiv
* @param data
* @return
* @throws Exception
 */
public static byte[] des3DecodeCBC(byte[] key, byte[] keyiv, byte[] data) throws Exception {

   DESedeKeySpec dks = new DESedeKeySpec(key);
SecretKeyFactory keyFactory = SecretKeyFactory.getInstance("desede");
SecretKey securekey = keyFactory.generateSecret(dks);
 
// 解密
Cipher cipher = Cipher.getInstance("desede" + "/CBC/PKCS5Padding");
IvParameterSpec ivp = new IvParameterSpec(keyiv);
cipher.init(Cipher.DECRYPT_MODE, securekey, ivp);
   return cipher.doFinal(data);
}