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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Yongsheng Liu Jie Li Guizani, M. |
| Copyright Year | 2012 |
| Description | Author affiliation: Graduate School of System and Information Engineering, University of Tsukuba, Tsukuba Science City, 305-8573, Japan (Yongsheng Liu; Jie Li) || Qatar University, Qatar (Guizani, M.) |
| Abstract | Time synchronization is crucial to Wireless Sensor Networks (WSNs) due to the requirement of coordination between sensor nodes. Existing secure time synchronization protocols of WSNs introduce high overhead when used for global time synchronization. In this paper, we propose a lightweight secure global time synchronization protocol for WSNs. In the proposed protocol, a broadcast synchronization packet makes all sensor nodes in the network synchronize with the trusted source. The synchronization packet is protected by a proposed broadcast authentication algorithm, which introduces asymmetry by transmitting hash values of secret keys in advance. It achieves immediate authentication and does not require the loose time synchronization. To defend the pulse-delay attacks, the arrival time of the synchronization packet is checked according to the estimated arrival time interval. The upper bound on the skew of the proposed protocol is proved. The message complexity in one period of the proposed protocol is O(n) where n represents the number of sensor nodes. The simulation results show that the maximum skew is within tens of milliseconds. |
| Starting Page | 2312 |
| Ending Page | 2317 |
| File Size | 458228 |
| Page Count | 6 |
| File Format | |
| ISBN | 9781467304368 |
| ISSN | 15253511 |
| e-ISBN | 9781467304375 |
| DOI | 10.1109/WCNC.2012.6214179 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2012-04-01 |
| Publisher Place | France |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Synchronization Protocols Authentication Wireless sensor networks Real time systems Hardware Equations |
| Content Type | Text |
| Resource Type | Article |
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