Application And Design Of Mutual Authentication Protocol In RFID System

For the openning of the RFID system and the limited source of the tag, a lot ofcomplicated but secure cryptographic technology can’t be applied on this system, which makesthat people always complaining the privacy problem in the RFID system. At the same time, theprivacy problem has become one of the most important cases of constraining the RFIDtechnology. So how to design a securiry mechanism which meet the necessary that containinglow-cost tag, efficiency tag identification, high security is still a challenging subject.In this paper, we first introduce same RFID authentication protocols which are classicenough, and analysis both the advantages and disadvantages of thise protocols. Then wepropose a group secret sharing based RFID mutual authentication protocol, which suite for theperson tracking application in health care areas. This protocol can ensure the legality of the tagand the reader, and the efficient tag authentiaciton of the back-end server. Even we can say thatthis protocol not only meet the application need of person tracking in the health care areas, butmeet all requirments of the security.The privacy is the major concern of RFID system at present, and there are lots of protocolshave been designed to protect this privacy of RFID system. But most of them are either highcost for the tag or not practical at all, even high cost with low security. Therefor, we proposeanother new protocol with a specifically defined server and many low-cost tags to improve twoprevious protocols. The tricks including that making full use of the tag’s random number totransfer the secret are able to solve all those matters efficiently as well as high security. And themost import thing is that our protocol is practical in large scale implementation.