Short paper: a new identity-based DH key-agreement protocol for wireless sensor networks based on the Arazi-Qi scheme

Authors:
Isabelle Hang;Markus Ullmann;Christian Wieschebrink
Affiliations:
SAP Research Center Karlsruhe, Karlsruhe, Germany;University of Applied Sciences Bonn Rhine-Sieg & Federal Office for Information Security, Bonn, Germany;Federal Office for Information Security, Bonn, Germany
Venue:
Proceedings of the fourth ACM conference on Wireless network security
Year:
2011

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Abstract

Public key cryptography based on elliptic curves is a promising foundation for energy-scarving pairwise key establishment in wireless sensor networks. Focusing on the Diffie-Hellman key-agreement, identity-based schemes can be applied to provide mechanisms for authentication. The AQ-protocol presented by Arazi et al. introduces such a key establishment supporting fixed as well as ephemeral keys. In this paper we review two known attacks of the ephemeral key establishment of this protocol. We introduce a new ephemeral key establishment for the AQ-protocol to fix these problems and analyze the proposed approach from a security perspective. We illustrate its feasibility for wireless sensor networks by presenting implementation results for the MICAz platform using TinyOS 2.x.