DocumentCode :
57407
Title :
SATS: Secure Average-Consensus-Based Time Synchronization in Wireless Sensor Networks
Author :
He, Jinwei ; Cheng, Peng ; Shi, Li-Hua ; Chen, Jiann-Jong
Author_Institution :
State Key Lab. of Industrial Control Technology, Zhejiang University, China
Volume :
61
Issue :
24
fYear :
2013
fDate :
Dec.15, 2013
Firstpage :
6387
Lastpage :
6400
Abstract :
It is important and challenging to achieve secure time synchronization in wireless sensor networks, which may be deployed in a hostile environment under various malicious attacks. The recently developed average-consensus-based time synchronization protocol (ATS) is a promising alternative as it does not depend on any reference node or network topology, which makes it robust to different kinds of attacks, e.g., denial-of-service, node destruction, etc. However, the in-network information fusion nature of average consensus makes the ATS vulnerable to the well-known message manipulation attacks. In this paper, we focus on how to defend the ATS protocol in wireless sensor networks under message manipulation attacks. We first investigate the impact of message manipulation attacks over ATS, and derive a necessary condition for ATS to converge. Then based on the obtained insights, we propose a novel adjusting parameter checking mechanism which exploits the two-hop neighboring information to dynamically constrain the attackers. We further incorporate all checking processes into the traditional ATS protocol to form a secure average-consensus-based time synchronization protocol (SATS). We prove that SATS guarantees the network time synchronization with an exponentially converging speed.
Keywords :
Clocks; Computer crime; Delays; Hardware; Protocols; Synchronization; Wireless sensor networks; Wireless sensor networks; average consensus; security; message manipulation attack; time synchronization;
fLanguage :
English
Journal_Title :
Signal Processing, IEEE Transactions on
Publisher :
ieee
ISSN :
1053-587X
Type :
jour
DOI :
10.1109/TSP.2013.2286102
Filename :
6636095
Link To Document :
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