CRC32循环冗余校验源程序！！！！ VC版本

DES Crypt adapted from unix crypt for delphi.

标准C++书写的BlowFish加密算法，和加密文件演示，速度较快-written in standard C BlowFish encryption algorithm, and encryption paper presentations, faster

字符串加密 -String encrypted string encryption

鉴于单纯设置一个计数器易被查出，通过修改使其不起作用。我们设计的程序可以通过数据文件，软件执行前通过关键字找到计数基数，然后计算和判别，如果在合理范围，则设定新的关键字，将计数基数放在新关键字指定的位置，并执行子程序 则启动自毁程序。

孙子定理及求模求逆算法-grandchildren theorem and inverse model for Algorithm

MD5算法的ASP实现． 它在MD4的基础上增加了"安全-带子"（Safety-Belts）的概念。虽然MD5比MD4稍微慢一些，但却更为安全。MD5也为一种非常优秀的中间技术。-MD5 algorithm ASP. It MD4 increase on the basis of "safety-belt" (Safety-Belts) concept. Although MD5 than MD4 slightly slower, but more secure. MD5 also as a very good intermediate technology.

DES的实现，平时上课的实验，供大家参考。-DES implementation, usually in class experiments, for your reference.

这个是一款不错的文件加密软件，能让你的隐私文件受到严密的保护．-this is a good document encryption software that can make your documents to be subject to stringent privacy protection.

一款文件加密的小软件-one small file encryption software

与 Cast128 算法二进制兼容的加密算法,64位块加密,加密匙可到128位-Cast128 algorithm and binary-compatible encryption algorithm, 64 block encryption, encryption keys can be 128