说明：  加密解密的入门书，详细介绍windows下加解密过程，用vc编程实现。通过算法的介绍和实例分析，有助于这方面的技术掌握。
(Encryption and decryption of the entry-book, detail the process of encryption and decryption under windows with vc programming. Through presentations and case study method will help to master this technology)