窗口方式下的DES加密系统，做用VC开发完成，简单易用：输入文件名（带目录），点加密按键后加密，完成后在相同目录下生成加密文件。解密过程相反。-DES encryption system in window mode, do to complete development of the VC, easy to use: enter the file name (with directory), encryption keys to encrypt, finished in the same di