CRYPTOGPS has been promoted as a public-key technology suitable for UHF RFID tag authentication. Since it is a classical commitment-challengeresponse (CCR) scheme, it can be converted into a signature scheme using the transformation proposed by Fiat and Shamir. Previously this signature variant has not been considered for RFID, but in this paper we show how to achieve this transformation in a w...

The HB problem first introduced by Blum and Hopper has been the basis for extremely lightweight authentication protocols for RFID tags [18, 19]. In this paper we introduce a variant of this problem which we call the strong HB problem. We analyze the strong HB problem and give some arguments that support its hardness. We then use the strong HB assumption in two applications of independent intere...

Privacy is a major concern in RFID systems, especially with widespread deployment of wireless-enabled interconnected personal devices e.g. PDAs and mobile phones, credit cards, e-passports, even clothing and tires. An RFID authentication protocol should not only allow a legitimate reader to authenticate a tag but it should also protect the privacy of the tag against unauthorized tracing: an adv...