凯撒和维吉尼亚加密方法，两种算法都不是很复杂，基本原理也相似所以都写入一个文件中来表示。...

软件模拟CRC冗余校验，可以对任意长度的发送序列求16位校验和，并且可以对接收序列进行检查。有详细的中文注释，和模拟函数-simulation software CRC Redundancy Check, for any length of this sequence for 16 checksum, and to be able to receive sequence for the examination. The Chinese have detailed notes and simulation function

ziplib for java 是很好的程序。务必读一读。压缩质量好-Ziplib for java is a very good procedure . Must read . It is of high quality to compre

目前企业面临的计算环境和过去有很大的变化，许多数据资源能够依靠网络来远程存取，而且越来越多的通讯依赖于公共网络公共网络（如 Internet），而这些环境并不保证实体间的安全通信，数据在传输过程可能被其它人读取或篡改。-currently facing the enterprise computing environment and past a great change, many data resources to be able to rely on remote network access, and more and more dependent on public communications networks public networks (such as the Internet), which environment is not a guarantee of the security entities communications, data transmission possible by other people read or tampered with.

DES加密算法的实现和演示，具体算法见网上，程序中有注释-DES encryption algorithm and demonstrate the achievement of the specific algorithm see online, proceedings have Notes

一篇数字水印方面的文章。-a digital watermark articles on the subject.

密码serpent算法源代码, 该算法是AES候选算法之一-Password serpent algorithm source code, the algorithm is AES, one of the candidate algorithm

著名的l0pht代码！-famous l0pht code!

Skipjack 加密算法 美国国家安全局标准加密算法-Skipjack encryption algorithm US country peaceful overall situation standard encryption algorithm

dos环境下的利用硬盘序列号加密的程序-dos environment sequence drives the use of encryption procedures

Delphi写的base64算法程序--Base64 algorithm program writed by Delphi