MD5加密，已经封装成一个C++类，只要调用该类就可方便使用

tc 2.0 文件加密-tc 2.0 file encryption

它也可以用来解除Adobe Acrobat PDF文件密码的工具，它可以帮助解决加密PDF无法编辑和复制/打印的问题，支持所有版本的Acrobat加密(包含7.x)，也支持128位加密。 -It also can be used to lift the Adobe Acrobat PDF files password tool, it can help to solve encrypted PDF can not edit and copy/print the questions, and support all versions of Acrobat encryption (including 7.x), also supports 128-bit encryption.

用matlab实现的图像加密算法-基于Arnold变换的图像加密-using Matlab achieve image encryption algorithm-based Arnold Transform Image Encryption

自己写的一个Vigenere加密算法．不用多说了吧，值得收藏，特别是对于初学者．-I have written a Vigenere encryption program by myself.Out of question,it is worth to be collection especially by the beginner.

提供加密的c/s 聊天程序。用到对称加密算法和非对称加密算法，实现客户服务器的安全聊天-Provide encrypted c/s chat program. Using symmetric encryption algorithms and asymmetric encryption algorithms, to achieve the security of client-server chat

Base 64 加解码程序-The program of BASE 64 encryption and decryption

素数生成算法，用于生成公共密钥，CA分配公共密钥。-prime number generation algorithm used to generate the public key, CA public key distribution.

VPN拨号程序源码(from sourceforge.net)-VPN digit dialing procedure source code (from sourceforge.net)

SHa1,经典加密算法,时代之骄傲-SHa1, classical encryption algorithm, proud of the times

MD5加密算法java实现 * 下面这些S11-S44实际上是一个4*4的矩阵，在原始的C实现中是用#define 实现的， 这里把它们实现成为static final是表示了只读，切能在同一个进程空间内的多个 Instance间共享*/ -MD5 algorithm to achieve java* Below these S11- S44 is a 4* 4 Moment RUF, in a primitive realization of the C# define is achieved, Here they become static final realization of the said CD. cut in the same process space within the shared among many Instance* /