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说明：  用visual c++ 写的des加密算法演示 (with visual c write des encryption algorithm demo)

文件加密器,实现对文件加密,用来学习的代码(File encryption, encrypting files, the code used to study)

带MD5摘要计算的登录程序,实现部分功能模块和部分界面(MD5 Abstract calculated with log procedures)

主要是对注册机的简单的开发以及应用，包括注册机的如何操作。(Mainly on the development of RI and simple applications, including RI' s how.)

DES加密算法，初始置换、密钥置换、密钥循环、密钥压缩置换、数据扩展置换、、S盒替换、P盒置换、末置换 (DES encryption algorithm, the initial replacement, key replacement, key loops, key compression replacement, data expansion permutation,, S cartridge replacement, P cartridge replacement, replacement end)

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.)

基于国密算法SM3实现HMAC，输入密钥和消息，可产生HASH验证码，C环境下调试成功(Based on the countries close algorithm realization SM3 HMAC, input key and news, can produce HASH verification code, C environment debugging success)

删除系统某存储区中的证书， 代码参考msdn(removal system of a storage area of the certificate, a code reference VARIANT)

一个能直接运行的AES加密解密程序，用VC2010开发。(A run of AES encryption to decrypt application directly, use VC2010 development.)

VC编写的简单DES加密程序，密钥由用户手动输入，可加密字符串(VC prepared by the simple DES encryption program, the key to manually input by the user)