FKM: a fingerprint-based key management protocol for SoC-based sensor networks

Authors:
Xiaoguang Niu;Yanmin Zhu;Li Cui;Lionel M. Ni
Affiliations:
Institute of Computing Technology, Chinese Academy of Sciences and Graduate School of Chinese Academy of Sciences;Hong Kong University of Science and Technology and Imperial College of London;Institute of Computing Technology, Chinese Academy of Sciences;Hong Kong University of Science and Technology
Venue:
WCNC'09 Proceedings of the 2009 IEEE conference on Wireless Communications & Networking Conference
Year:
2009

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Abstract

Recently, System-on-Chip (SoC) technology has been adopted to design smaller, lower-power and cheaper tamper- resistant sensor nodes. In these nodes, we find that there exists a lifetime-secure memory fraction which stores the anterior part of the application executable binary code, namely "fingerprint". We propose a key management protocol based on this secure fingerprint-- FKM. In this protocol, any pair of nodes can build a secret key by combining two raw key elements randomly selected by both nodes from their fingerprints respectively. To further strengthen the security, we also present two multi-dimension grid key reinforcement schemes. To the best of our knowledge, this paper is the first attempt at the use of application executable binary code itself to develop a key management protocol. A thorough analysis shows that FKM supports higher security and superior operational properties while consuming less memory resource compared to the existing key establishment schemes.