Abstract
Special physical characters and limited resources in tags make existing RFID systems being confronted with many security and privacy concerns. In this paper, a RFID authentication protocol is proposed, with a novel scheme called index inner table used in the reader. Index inner table may efficiently utilize calculation capacity and storage space of the reader to construct a filter which can sift authentication applications from tags, thus, it could alleviate workload of the backend server and resist replay attack from an adversary. The structure, filter algorithm, update and sorting algorithm, eraser algorithm of index inner table would be introduced detailedly in this paper. In addition, this protocol is particularly suitable for the low-cost RFID systems; the security and performance of this protocol are analyzed as well.
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