个人觉得很不错的简单代码，用很少的程序实现，非常值得一看...

MD5加密算法得VisualC＋＋6.0源程序，直接调用里面的函数即可-MD5 Encryption Algorithm in Visual C++ 6.0 source code, direct calls to the function can be

一个RSA算法的完整实现，有超长密钥-an RSA algorithm integrity, and it is extra-long keys

产生共享软件加密序列号的程序- Has the shareware encryption sequence number procedure

MD5加密算法vc实现-MD5 encryption algorithm to achieve vc

Introduction to Cryptography in plain simple english. The document talks about the early day cryptography and gives some simple examples to the readers.

这个小软件通过在可执行文件(.exe)的尾部添加一个新节(Section)，并且修改PE的入口地址，使可执行文件在运行时，跳出一个输入密码的对话框，从而实现了简单的加密。-small software in executable files (. Exe) to the tail adding a new section (Section), and amend the PE import addresses, so that the executable file is run, jump out of a password dialog box, thus achieving a simple encryption.

是我设计的在DSB中隐藏语音的例子. 用ELANIX公司的SYSTEMVIEW打开运行. 其掩护信号和隐藏信号输入输出端均需设置语音源文件,比如自己录制的声音.-I designed the DSB concealed voice example. ELANIX company with the SYSTEMVI EW open operation. their cover and concealment signal input and output signals required to set up voice source, For example, recording their voices.

本代码实现了维吉尼亚密码，维吉尼亚密码是基于简单的凯撒密码改进而来的多表替换密码，代码简单，供交流学习使用。

著名的解Unix密码的源程序 -The source for cracking unix password

des加密算法源码-Sourcecode of des encrypting algorithm