## CryptoDB

### Paper: HB#: Increasing the Security and Efficiency of HB+

Authors: Henri Gilbert Matthew J.B. Robshaw Yannick Seurin URL: http://eprint.iacr.org/2008/028 Search ePrint Search Google The innovative HB+ protocol of Juels and Weis [10] extends device authentication to low-cost RFID tags. However, despite the very simple on-tag computation there remain some practical problems with HB+ and despite an elegant proof of security against some limited active attacks, there is a simple man-in-the-middle attack due to Gilbert et al. [8]. In this paper we consider improvements to HB+ in terms of both security and practicality. We introduce a new protocol that we denote random-HB#. This proposal avoids many practical drawbacks of HB+, remains provably resistant to attacks in the model of Juels and Weis, and at the same time is provably resistant to a broader class of active attacks that includes the attack of [8]. We then describe an enhanced variant called HB# which offers practical advantages over HB+.
##### BibTeX
@misc{eprint-2008-17705,
title={HB#: Increasing the Security and Efficiency of HB+},
booktitle={IACR Eprint archive},
keywords={cryptographic protocols / HB+, RFID tags, authentication, LPN, Toeplitz matrix},
url={http://eprint.iacr.org/2008/028},
note={Published at Eurocrypt 2008 yannick.seurin@orange-ftgroup.com 13900 received 22 Jan 2008},
author={Henri Gilbert and Matthew J.B. Robshaw and Yannick Seurin},
year=2008
}