Secure Time Synchronization Scheme in IoT based on Blockchain

Kai Fan, Yanhui Ren, Zheng Yan, Shangyang Wang, Hui Li, Yintang Yang

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review


The era of information has arrived. As an important part of new generation of information technology, Internet of Things (IoT), which is developing rapidly, requires higher and higher time accuracy. However, the malicious nodes located in network can influence the time synchronization. The security issue of time transfer and consistency is critical and challenging. In this paper, we propose a secure scheme based on blockchain to solve the problem of time announcement in IoT. In this distributed network, a closed blockchian to record and broadcast time is utilized, which minimize attacks from external environments. Moreover, this scheme has the advantage of adapting the changes of network topology. By employing POS consensus mechanism, time synchronization can be implemented efficiently. At last, the analysis results show that this secure scheme can be achieved with high efficiency and less communication cost.
Original languageEnglish
Title of host publicationProceedings IEEE 2018 International Congress on Cybermatics
Subtitle of host publication2018 IEEE Conferences on Internet of Things, Green Computing and Communications, Cyber, Physical and Social Computing, Smart Data, Blockchain, Computer and Information Technology
ISBN (Electronic)978-1-5386-7975-3
Publication statusPublished - 2018
MoE publication typeA4 Article in a conference publication
EventIEEE International Conference on Blockchain - Halifax, Canada
Duration: 30 Jul 20184 Aug 2018


ConferenceIEEE International Conference on Blockchain


  • Internet of Things (IoT)
  • Synchronization
  • Blockchain
  • Security

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