动态模拟方式详解DES轮密钥生成

DES对称加密算法过程繁锁复杂，其中的16轮密钥生成过程也是一个复杂的过程，大量的选择操作、循环移位操作，令众多学者望而却步，从而对该加密算法只是一知半解。现从笔者自己编写的一个轮密钥生成模拟程序人手，用动态演示的方法全面而又详细地剖析了轮密钥的生成过程及原理，为大家透彻理解轮密钥生成提供帮助，从而为深入学习DES加密算法和应用DES加密算法打下基础。

Dynamic Simulation on How to Generate the Round Key

DES is a complex symmetric encryption algorithm, among which how to generate the round key is also very com- plex. There are a lot of selected operation,loop shift operation, so it＇ s difficult to learn for learned man, and many learned man know little to the algorithm. Now the author tells others the algorithm in an easy way, based on a developed round key generate program . In the paper,you would learn the algorithm step by step, and know how to generate the round key, which could lay foundation for studying the DES encryption algorithm and application of DES encryption algorithm.