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伴随WSN的广泛应用,其安全问题也日益得到重视。WSN节点通信时需要验证对方的身份,常用的方式是密钥验证方式,如何确保密钥分配过程的安全性是整个WSN网络通信安全的基础。在分析目前常用的密钥分配算法的基础上,提出了基于多项式、时间和身份相关的密钥对分配方法,利用四元对称多项式将节点的部署时间和节点ID进行绑定,并在此基础上建立节点间的共享密钥对协商机制。对方法的安全性和可行性进行了分析,并通过仿真实验进行验证,结果表明基于PTPP的WSN密钥对分配方法可以有效阻止复制节点伪装新节点加入网络行为,提高了密钥分配的安全性。
With the widespread use of WSN, its security issues are also increasingly valued. WSN nodes need to verify the identity of each other during communication. The commonly used method is the key verification method. How to ensure the security of the key distribution process is the basis of the security of the entire WSN network communication. Based on the analysis of the commonly used key distribution algorithms, this paper proposes a key pair distribution method based on polynomial, time and identity, and uses the quaternion symmetry polynomial to bind node deployment time and node ID. Based on this, Create a shared key pair negotiation mechanism between nodes. The security and feasibility of the method are analyzed and verified by simulation experiments. The results show that the key distribution method based on PTPP can effectively prevent the duplicated node from disguising the new node to join the network and improve the security of key distribution .