常用的密码算法，如RSA，MD2，MD5等，还包括简单的例程，很久以前写着玩的...

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access数据库加密有几法，但用“设置安全机智向导”加密最为牢靠，又如何访问这样的数据库呢-access database encryption with a few laws, but "to provide a safety witty guide" the most secure encryption, how to access such a database?

简单演示了下如何利用DELPHI制作加壳器-Simple demonstration of how to use the next production加壳browser DELPHI

des差分密码分析实现源代码-des differential cryptanalysis achieve source code

用c++实现仿射密码，我是在DevC++中跑的，应该在VisualC++中也行-With c++ Achieve affine password, I was DevC++ In running, it should be in VisualC++ Also line

一种通过判断网卡地址来控制软件使用期限的算法，简单有效。-Address of a card through the control software to determine the use of time algorithms, simple and effective.

des加密算法的java实现-The implement of DES encryption algorithm for JAVA

DES算法的C语言实现，大家可以参考一下。-DES algorithm to achieve the C language, we can reference.

IBE基于身份的加密系统的系统叁数程序，使用VC6.0开发-IBE identity-based encryption system of systems Triple the number of procedures, the use of VC6.0 Development

PGP 是一种混合密码系统。当用户使用PGP 来对纯文字加密的时候， PGP 首先会压缩这 段纯文字。数据压缩能够节省调制解调器传输时间以及磁盘类空间，还有更重要的、强化密码法的 保密程度。-PGP is a hybrid cryptosystem. When the user to use PGP to encrypt the text, PGP will first this text compression. Data compression can save time and modem transmission disk space, and more importantly, to strengthen the password confidentiality law.