用于文件的DES加密和解密，用matlab编的，含操作界面，其核心程序是网上DOWN的,DES for file encryption and decryption, using the matlab made, including user interface, the core of the program is online DOWN

matlab实例编程系列2,内有运行后界面图像＆源代码,很好的(Examples of matlab programming series 2, inside after the operation interface image & source code, very good)