DES加密解密程序的主程序在 FileDES类中，可以操作的文件类型有TXT、DOC、JAVA等都没有问题,且Word文档中包含图片也没问题。-DES encryption and decryption procedures of the main program in FileDES class, the file type can be operated on TXT, DOC, JAVA. There is no problem working with the Word document containing pictures.