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MD5加密算法，可以加密包含二进制数据的数据块，生成16字节MD5加密数据。(MD5 encryption algorithm to encrypt data blocks that contain binary data, generates a 16-byte MD5 encrypted data.)

VB程序注册机范例，控件简单实用，采用流行且难以破解的算法加密机器码、序列号、注册码，能更好地保护您的软件(VB program RI example, the controls simple and practical, using the popular and difficult to machine code to crack the encryption algorithms, serial numbers, registration codes, can better protect your software)

C++ implementaion for RSA together with the Wiener attack. It uses NTL library for big numbers

针对Logistic映射，实现数字图像迭代混沌加密算法()

RSA算法的解密和加密，用扩展的欧几里得算法求乘法逆元(rsa)

QT QT GAME ENGINE DESIGN ASSIGNMENT 3 CODE

今天我们学习了des对称加密算法这是一个des算法的C++实现(This is a des !)

用于车型定位识别所用的加密狗文件，非常实用(Dongle for vehicle location identification file used, very practical)

支持加密Sqllite库，vs2008 + sqlite3 + sqlcipher,测试可用(Supports encryption Sqllite library, VS2008+ SQLite3+ sqlcipher, testing available)

修改本程序中的U盘的序列号后，程序可以变成你自己的独立的Ｕ盘启动密匙，　只能你的Ｕ盘才能打开程序　不需要往Ｕ盘中存入任何文件，就可实现用Ｕ盘加密程序.只能通过你的U盘启动你的程序 程序中有详细的注释(Encrypt your program by a soul U-disk without saving anything in you disk Modify the program, U-disk serial number, the program can become your own independent U disk key, only you can open U disk U disk does not need to deposit any file, can be achieved U disk encryption program)