An authentication approach to enhance RFID security

Radio Frequency Identification (RFID) technologies have been standardized and widely commercially used, but its security problem is a major challenge. This paper presents an efficient authentication approach to prevent tag from eavesdropping by attackers, tracing by illegal reader. It firstly gives a comprehensive discussion of privacy problems, then presents a mutual authentication and encrypts communication mechanism. And a security analysis on withstanding attackers for the RFID approach is given.