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Title: Dynamic key-updating : privacy-preserving authentication for RFID systems
Authors: Lu, Li
Han, Jinsong
Hu, Lei
Liu, Yunhao
Ni, Lionel M.
Keywords: RFID
Issue Date: Mar-2007
Citation: Proceedings of IEEE International Conference in Pervasive Computing and Communications (IEEE PerCom), White Plains, NY, USA, Mar. 2007
Abstract: The objective of private authentication for Radio Frequency Identification (RFID) systems is to allow valid readers to explicitly authenticate their dominated tags without leaking tags’ private information. To achieve this goal, RFID tags issue encrypted authentication messages to the RFID reader, and the reader searches the key space to locate the tags. Due to the lack of efficient key updating algorithms, previous schemes are vulnerable to many active attacks, especially the compromising attack. In this paper, we pro-pose a Strong and lightweight RFID Private Authentication protocol, SPA. By designing a novel key updating method, we achieve the forward secrecy in SPA with an efficient key search algorithm. We also show that, compared with existing designs, SPA is able to effectively defend against both passive and active at-tacks, including compromising attacks. Through proto-type implementation, we observe that SPA is practical and scalable in current RFID infrastructures.
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