RC4_DLL

sm4国密对称算法源码和使用sample，请参考。。(sm4 source code sample)

playfair 加密算法的实现，用一个例子做了展示(realize playfair algorithm，use a sample to show the algorithm)

本程序可以实现AES16,24,32位任意长度的密码与任意长度的明文的加密与解密，并附有一实例(This procedure can achieve the AES16 24,32 password of any length and any length of plaintext encryption and decryption, with an example)

vigenerecipher加密解密算法实例 使用vigenerecipher算法加密字符串 可输入任意密钥(vigenerecipher examples of encryption and decryption algorithms String encryption algorithm using the vigenerecipher Can enter any key)

软件加密 使用MD5算法对密码进行加密 软件加密 使用MD5算法对密码进行加密(Software encryption using MD5 algorithm to encrypt passwords)

奇迹C1 C2 C3 C4协议加密与解密(MU C1 C2 C3 C4 encrypt and decrypt)

自己动手写加壳程序，按照文档一步一步来，做你自己的加壳程序！(Packers to write himself, according to the document step by step, do your own packers!)

ras加密实现,图形界面.源码附有注释，方便理解。欢迎下载(ras encryption to achieve, graphical interface. annotated source code to facilitate understanding. Welcome to download)

sha256的签名算法，纯C实现，已验证正确，在控制台上直接运行即可，(sha256 signature algorithm, pure C implementation ，has been verified properly and can be run directly on the console.)

基于VB的M5数学密码算法源码,有需要的就下载吧。(VB-based M5 mathematical algorithm source code, there is a need to download it.)