An Improved Random Key Predistribution Scheme for Wireless Sensor Networks Using Deployment Knowledge
An Improved Random Key Predistribution Scheme for Wireless Sensor Networks Using Deployment Knowledge
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DOI：
10.14257/ijsia.2016.10.5.21
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发表时间：
2016-05
影响因子：
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通讯作者：
Lina Zhu;Zuochang Zhang;Jianhua Li;Renjie Zhou
中科院分区：
文献类型：
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作者：
Lina Zhu;Zuochang Zhang;Jianhua Li;Renjie Zhou
密钥管理是无线传感器网络安全机制和服务的基础。随机密钥预分配方案被广泛认为是最实用的无线传感器网络。然而，该方案面临的挑战是，它不能同时实现理想的安全连接和强大的抵抗节点捕获的能力。针对这一缺陷，本文提出了一种基于部署知识的随机密钥预分配方案。首先，传感器节点被分为不同的组，根据其位置预期。并且密钥池被相应地分组为密钥池子集。为了实现相邻组之间的通信，相应的密钥池子集有一定程度的重叠。对于所有密钥，对密钥重用没有限制。共享q个公共密钥的邻居节点将以高概率建立安全链路。此外，我们的方案继承了qcomposite随机密钥预分配方案的优点，它可以保持安全，即使一些节点被捕获。理论分析和仿真实验表明，改进方案在网络连通性和恢复能力方面都有较好的表现。
Key management is the basis of many security mechanisms and services in wireless sensor networks (WSN). Random key predistribution scheme is widely considered as the most practical for WSN. However, this scheme faces the challenge that it cannot achieve the ideal security connectivity and strong resilience against node capture simultaneously. To address this limitation, an improved random key predistribution scheme using deployment knowledge is proposed in this paper. Firstly, sensor nodes are divided into different groups according to their location expected. And the key pool is grouped into key pool subsets accordingly. To realize the communication between adjacent groups, the corresponding key pool subsets have a certain degree of overlapping. For all keys, there is no limitation on key reuse. Neighboring nodes sharing q common keys will establish secure link with high probability. Moreover, our scheme inherits the advantage of qcomposite random key predistribution scheme that it can maintain security even if some nodes are captured. Theoretical analysis and simulation experiments show that the improved scheme performs well on network connectivity and resilience.