Apart from the JCE fr a mework, JCE package also includes SunJCE service providers, including many useful encryption algorithms such as DES (Data Encryption Standard) and the Blowfish.

• 除了JCE框架之外，JCE软件包还包含了SunJCE服务提供者，其中包括许多有用的加密算法，比如DES（Data Encryption Standard）和Blowfish。为简单计，在本文中我们将用DES算法加密和解密字节码。