This paper studies the secure and accurate clock synchronization problem for sensor networks with time-varying delays and malicious attacks. A novel clock synchronization scheme based on the attack detection mechanism, attack compensation, and maximum consensus protocol is proposed. The proposed scheme starts with the detection of the malicious attacks and the clock data under attacks is eliminated. On the basis, software clock parameters are updated so that all the nodes in the network can have the same software skew and offset, so the clock synchronization can be achieved. Furthermore, it is theoretically proved that the proposed scheme can achieve the attack detection correctly, and further can guarantee a secure and accurate clock synchronization. In addition, extensive simulations are also conducted to validate the effectiveness of the proposed scheme.

本文研究具有时变时延和恶意攻击的传感器网络安全准确的时钟同步问题。提出了一种基于攻击检测机制，攻击补偿和最大共识协议的时钟同步方案。所提出的方案从检测恶意攻击开始，并消除了受到攻击的时钟数据。在此基础上，更新软件时钟参数，以使网络中的所有节点都可以具有相同的软件偏斜和偏移，从而可以实现时钟同步。此外，从理论上证明了该方案可以正确实现攻击检测，并且可以保证时钟同步的安全和准确。此外，