Cryptology ePrint Archive: Report 2012/355

Never trust a bunny

Daniel J. Bernstein and Tanja Lange

Abstract: ``Lapin'' is a new RFID authentication protocol proposed at FSE 2012. ``Ring-LPN'' (Ring-Learning-Parity-with-Noise) is a new computational problem proposed in the same paper; there is a proof relating the security of Lapin to the difficulty of Ring-LPN. This paper presents an attack against Ring-LPN-512 and Lapin-512.The attack is not practical but nevertheless violates specific security claims in the FSE 2012 paper.

Category / Keywords: secret-key cryptography / Authentication, RFID, LPN, Ring-LPN, attacks, Lapin, bunnies

Publication Info: expanded version of RFIDsec paper

Date: received 21 Jun 2012

Contact author: tanja at hyperelliptic org

Available format(s): PDF | BibTeX Citation

Version: 20120622:200442 (All versions of this report)

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