【原创】 使用批处理编写，利用wmic读取设备id，简易实现加密U盘原理的小程序。可以模拟实现USB-key（U盾）功能。-【Original】 use batch writing, use of wmic reading device id, simple realization of U disk encryption principle of applet. Can be simulated to achieve USB-key (U Shield) feature.

使用u盘作为数字证书的存储介质，验证用户的合法性-Uses the u plate to take the digital certificates the storage medium, the confirmation user s validity