I. Introduction
Access control is one of the most widely used user identification applications of smart card on university campus. Traditional smart card access control system on university campus adopts a client-server mode in which an independent instance should be deployed for each application scenario [1]. With the increase of system instances, some management and technical problems become more and more prominent. Firstly, as cardholders must go to access control administrators to register card information when there are changes of smart cards, the user experience is not satisfied. Secondly, when cardholders do not report the loss of their smart cards timely, there are possible security problems. Thirdly, because all card information and access control information kept in the same system instance should be maintained by the same access control administrator, the burden of the administrator is quite large. Finally, there are more and more duplicate investment of software and hardware within the same university. Meanwhile, the upgrade of the system will become both difficult and expensive.