基于通用USB接口的软件加密狗设计  

Design of Softdog Based on the General USB Interface

作　　者：翟卫青[1] 翟子楠[1] 

机构地区：[1]河南省平顶山市建设路西段240号平顶山学院电气信息工程学院

出　　处：《微计算机信息》2006年第09Z期106-107,144,共3页Control & Automation

摘　　要：USB接口已逐渐成为计算机上最常用的接口之一,基于USB接口的软件加密狗相对于并口或串口的软件加密狗将具有更强的通用性。同时,由于USB接口的热插拔特性,用户使用时更加便捷。本文主要讨论了基于单片机扩展USB接口设计软件加密狗的方法,给出了硬件原理图并介绍了固件程序、设备驱动、RC5加密算法的编制过程。As the USB interface has becoming the most popular interface,the softdog based on the USB interface has more compatibility than that based on the parallel interface or serial interface.meanwhile, the USB interface will be convenient for users who use the softdog, as the plug-in and plug-out characteristic. This paper mainly discussed a method of designing softdog based on expanding USB interface on the standard 51 single chip processor series. A hardware theory drawing is be given,besides,introduced the programming process of firmware,device and Encryption of RCS.

关 键 词：单片机 USB接口 设备描述符 加密狗 RC5 

分 类 号：TP309.2[自动化与计算机技术—计算机系统结构]