高速U盘病毒隔离器的设计与实现

Design and implementation of U disk virus isolator with hi-speed

U盘的普及使U盘病毒繁衍迅速,针对信息系统安全保护的需要,设计出一种U盘病毒隔离器。该隔离器具有隔离Autorun病毒、防止PC的数据通过U盘泄密、防止PC中的病毒感染U盘的功能。隔离器能够快速捕获到U盘与主机之间所有底层数据,在此基础上,隔离器中的微控制器(MCU)通过分析、审计和过滤流过隔离器中的底层数据来实现上述功能。经实际检测,该设计能够实现上述功能。

The popularization of U disk makes virus from U disk spread fast.In order to protect the safety of information system,the authors designed a U disk virus isolator with three functions,firstly isolating Autorun virus from U disk,secondly preventing the PC＇s data from stealing by U disk,and thirdly preventing the PC＇s virus from spreading to U disk.The isolator can quickly capture all the data between the U disk and the PC,then the Micro Controller Unit（MCU） of the isolator analyzed,filtered and audited the data transport between U disk and computer to implement those three functions described above.Through actual measuring,it is found that this design can implement those three functions successfully.