IEEE802.15.4e标准的安全多跳时间同步协议设计

发布时间：2018-12-14 16:12

【摘要】：IEEE802.15.4e是工业物联网中最新的MAC层标准,其采用时间同步技术实现高可靠、低功耗的无线网络。由于时间同步机制是工业无线网络中的核心支撑技术,因此其往往成为攻击者的首选攻击目标。针对IEEE802.15.4e标准的多跳时间同步协议存在安全性不足的问题,提出了一个多跳时间同步安全策略SMTSF。SMTSF安全策略主要采用基于异常的入侵检测算法、基于信任模型的多路径时间同步方法和加密与认证等关键技术,有效保障了节点之间安全地进行多跳时间同步。在基于入侵检测的算法中,边界路由器对节点的Rank值进行规则验证,可以有效检测出时间同步树攻击;同时设计了轻量级防火墙来抵御来自互联网的恶意主机攻击。在基于信任模型的多路径时间同步方法中,通过建立节点之间的信任模型来保障网络中节点可以找到一条安全多跳同步路径。仿真结果表明,SMTSF能有效检测时间同步树攻击并抵御捕获攻击。
[Abstract]:IEEE802.15.4e is the newest MAC layer standard in the industrial Internet of things. It uses time synchronization technology to realize high reliability and low power wireless network. Because the time synchronization mechanism is the core supporting technology in industrial wireless networks, it is often the preferred target for attackers. Aiming at the problem of insufficient security of multi-hop time synchronization protocol in IEEE802.15.4e standard, this paper proposes a multi-hop time synchronization security policy, SMTSF.SMTSF security policy, which mainly adopts an anomaly based intrusion detection algorithm. The multipath time synchronization method based on trust model and the key technologies such as encryption and authentication can effectively guarantee the secure multi-hop time synchronization between nodes. In the intrusion detection algorithm, the border router verifies the Rank value of the node, which can detect the time synchronization tree attack effectively. At the same time, a lightweight firewall is designed to resist the malicious host attack from the Internet. In the multipath time synchronization method based on trust model, the trust model between nodes is established to ensure that nodes in the network can find a secure multi-hop synchronization path. Simulation results show that SMTSF can effectively detect time synchronization tree attacks and resist capture attacks.
【作者单位】：北京科技大学计算机与通信工程学院;
【基金】：国家“八六三”高技术研究发展计划基金项目(2014AA041801-2) 360开放实验室课题资助
【分类号】：TN915.08

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