Abstract
IEEE802.15.4e networks adopt time-synchronized medium access control protocols which enables highly reliable and ultra-low power industrial wireless networks. In these networks, nodes use timeslot to communicate which need a high-precision time synchronization. In hostile environments, the time synchronization protocol may be destroyed by external, compromise or pulse-delay attacks. In this paper, we present a secure time synchronization for IEEE802.15.4e networks called STS_4e which includes a secure single-hop pair-wise time synchronization and a secure cluster-wise time synchronization. The secure pair-wise time synchronization adopts message integrity authentication mechanism to defend against external attacks and threshold filter algorithm to defend against compromise and pulse-delay attacks. The secure cluster-wise time synchronization adopts packet-based key chain to improve µTESLA broadcast authentication mechanism which can well balance the delay of disclosed keys and the length of key chain. Finally, we implement the STS_4e scheme on OpenMoteSTM node running OpenWSN. The results show that the proposed scheme can successfully defend against time synchronization attacks as well as the low energy consumption.
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Acknowledgments
This work is supported by National High Technology Research and Development Program of China (863 Program) (No. 2014AA041801-2), the National Natural Science Funds of China (61671056) and 360 Openlab Project.
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Yang, W., He, J., Qi, Y. et al. STS_4e: Secure Time Synchronization in IEEE802.15.4e Networks. Int J Wireless Inf Networks 23, 283–296 (2016). https://doi.org/10.1007/s10776-016-0322-3
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DOI: https://doi.org/10.1007/s10776-016-0322-3