摘要： USB设备通过主机的识别之后，与主机之间建立起一条USB传输信道，这是设备实现功能的基础。USB身份锁是网络身份认证系统中常用的信息载体，相比较常规USB设备，身份锁具有更高的安全性要求。文章给出一个基于厂商认证协议的身份锁强化识别方案，在实现USB设备标准配置的基础上，通过增加设备和驱动之间的可信身份认证，加强设备的识别处理。

关键词: USB身份锁, 识别, 厂商认证协议

Abstract: USB device functions only when a communication channel is set up between the USB device and its host after the completion of host-device recognition. A USB device can be used as a USB identity token. When it is used as an identity token in an network identity authentication system, a USB token requires more security than normal USB device. An improved USB token recognition scheme is proposed using a manufacturer authentication protocol. It upgrades the security level of the token identification by adding authentication procedures to the normal USB device recognition.

Key words: USB token, Recognition, Manufacturer’s authentication protocol