Untraceable RFID Authentication Protocols: Revision of EC-RAC

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Executive Summary

Radio Frequency IDentification (RFID) systems are steadily becoming paramount due to their vast applications such as supply chains, inventory, tolling, baggage management, access control etc. While they have potentials to improve the lives, they also present a privacy risk. Privacy is often overlooked in many applications, but due to pervasiveness of RFIDs the issue has to be taken into account. However, additional security always comes at price and the scarceness of resources on a tag makes conventional privacy-preserving protocols infeasible.

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