An Efficient and Secure RFID Authentication Scheme for C1G2 Standard

An Efficient and Secure RFID Authentication Scheme for C1G2 Standard

Radio frequency identification promotes many applications for automatic identification such as supply chain, thief-prevention. The messages of RFID system are transmitted by radio waves, attackers can carry on common wireless attacks. The technology may incur user privacy and cause security problem. The popular of RFID system depends on low cost. EPCglobal introduces a new standard for low cost tags, called C1G2 standard. Many researchers devote to design authentication protocols which comfort to C1G2 standard. Predo introduced a new lightweight authentication scheme which compliant to C1G2 standard, called “Azumi protocol”. The scheme needs an exclusive search in database during authentication phase and suffers security problems such as revealing of secret, impersonate attack. We present our attacks and point out the problems on Azumi protocol. We propose an improved scheme and analysis our scheme for security and performance. Our scheme can achieve high security level and efficient performance. Our scheme is compliant to requirements of C1G2 standard.