Usbkey数字签证认证模型建立的仿真U盾签字交易，工程包括C#编写的认证服务器，Usbkey客户端。工程还包括ARM项目工程，里面是U盾的硬件程序。-Usbkey Visa certified digital simulation model U Shield signature transactions, includes an authentication server written in C#, Usbkey client. Project also includes the ARM