C语言环境下的AES加密算法，支持128位的AES加密。

用VB实现的DES加密算法，适合于小型VPN的明文加密传输-the DES encryption algorithm, suited to the small expressly VPN encryption transmission

提供服务端登陆验证程序（验证码随机改变，防止非法进入）； 提供服务器控制程序，管理员可以允许、屏蔽和删除一个注册用户的登陆客户端； 任何改变访问地点的行为，都必须得到管理员的授权，否则无法登陆系统； 即使知道其他用户的密码也不能登陆系统。-provide certification services-landing procedures (Random Verification code change to prevent illegal entry); Provide server control procedures, administrators can allow, shielding and delete a user"s landing client; Any change in location of the visit have to be authorized administrators, whether while not landing systems; even if they know the password for other users can not landing system.

Cryptography and Network Security, 4th Ed.-Stallings ebook. free to download

这是最新的openssl学习的材料，是源代码，相信朋友们以前看过的都知道，这在网络方面很有用的。-This is the latest openssl learning opnenssl, is the source code, I believe that friends who have seen before, all know that this very useful in networking.

StreamSec Security Library含有多种算法的控件-StreamSec Security Library contains a variety of control algorithms

aes 算法的DEMO-Aes algorithm DEMO

这是一个完整的数字签名过程，包括密钥的分发管理，摘要的提取，在eclipse上测试成功。

C++版AES源代码 我在这里献丑了，此加密算法的扩展功能，大家发挥自己的能力写写吧！-C++ AES source

des演示算法c＋＋实现-des algorithm demonstration implemented by C++

c++的基于openssl实现的简单aes文件加密类 -c++ realize openssl based on a simple type of file encryption aes