一种基于路由驱动的三元对称多项式密钥管理方案

摘要

Aiming at the problems of existing key management scheme that it is difficult to achieve balance between the network connectivity,communication overhead and network security,we propose a routing-driven trivariate symmetric key management scheme based on tree-ring topology model.During key negotiation,we add the routing information in,since the node only establishes session key with its communication neighbours,so the energy consumption of key negotiation reduces effectively.We also substitute the random numbers into trivariate symmetric polynomial so as to convert it to a stochastic bivariate symmetric polynomial,this can effectively solve the polynomial safe threshold problem and thus prevents the leakage of keys.Simulation experimental results show that this scheme can effectively improve the network connectivity,enhance the node anti-capture ability and saves the memory space.Besides,it also reduces the energy consumption.%针对现有无线传感器密钥管理方案在网络连通率、通信开销和安全性三者难以达到平衡的问题，基于树-环型拓扑模型，提出一种路由驱动的三元对称多项式密钥管理方案。在密钥协商时，加入路由信息，节点只与通信邻居建立会话密钥，有效减少密钥协商的能量耗损；利用随机数代入三元对称多项式中，从而化成一个随机二元对称多项式，能有效解决多项式安全门限问题，从而防止密钥泄露。仿真实验结果表明，该方案能有效提高网络连通率，增强节点抗捕获能力，节省存储空间，并减少密钥协商的能量消耗。