Short Paper: Privacy-Preserving ECC-Based Grouping Proofs for RFID

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Executive Summary

The concept of grouping proofs has been introduced by Juels to permit RFID tags to generate a verifiable proof that they have been scanned simultaneously, even when readers or tags are potentially un-trusted. This paper extends this concept and proposes a narrow-strong privacy-preserving RFID grouping proof and demonstrates that it can easily be extended to use cases with more than two tags, without any additional cost for an RFID tag.

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