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针对现有的基于地理位置信息的无线传感器网络节点身份认证方案存在的通信开销大、计算重复度大、节点位置信息暴露率高等问题,提出一种高效的节点身份认证方案.方案对网络部署区域进行局部目标区域划分,在目标区域内利用欧氏距离计算出与目标节点最短路径的该区域边界节点,该边界点的认证通过给目标区域授权第三方可信任的门限节点来实现.此外,考虑节点位置信息的安全性,给节点增设可更新的密码信息.在相同仿真参数设置下,改进方案与DBNA算法和IDNAS算法比较,网络通信开销降低75%,传感网络节点位置信息暴露率维持在5%左右.
Aiming at the existing problems of large communication overhead, large computing repetition and high exposure of node location information, existing node authentication schemes based on geo-location information propose an efficient scheme of node identity authentication.A scheme is proposed for network deployment area The local target area is partitioned and Euclidean distance is used to calculate the border node of the region with the shortest path to the target node.The authentication of the boundary point is realized by authorizing the target area to authorize the trusted threshold node of the third party.In addition, The security of the location information of the node is added to the node, and the password information is added to the node.Under the same simulation parameter setting, compared with the DBNA algorithm and the IDNAS algorithm, the improved scheme reduces the network communication overhead by 75% and the exposure rate of the location information of the sensor network node is maintained at About 5%.