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| 传感器网络中一种可靠的对密钥更新方案 |
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温蜜1, 陈克非1,2, 郑燕飞1,2, 李晖1
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1.上海交通大学,计算机科学与工程系,上海,200240;2.上海交通大学,信息安全工程学院,上海,200240
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| 摘要: |
| 提出了一种基于预分发和协作的可靠的对密钥更新方案RPKU(reliable pairwise key-updating).借助于一种改进的Blom密钥矩阵构造方法,该方案能够随着网络的动态变化而动态伸缩各个节点的密钥信息,从而解决了由于节点被攻击所导致的密钥泄漏和密钥连通性下降等问题.该方案还提出了一种基于分簇型传感器网络结构的密钥预分发方法,使得任意两个相邻节点间都能建立一个对密钥.仿真结果表明,与已有的密钥方案相比,该方案在安全性、密钥连通性和扩展性等方面都具有明显的优势. |
| 关键词: 无线传感器网络 密钥分发 密钥更新 Blom密钥矩阵 安全 |
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| 基金项目:Supported by the Specialized Research Fund for the Doctoral Program of Higher Education of China under Grant No.20050248043 (高等学校博士学科点专项科研基金) |
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| A Reliable Pairwise Key-Updating Scheme for Sensor Networks |
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WEN Mi,CHEN Ke-Fei,ZHENG Yan-Fei,LI Hui
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| Abstract: |
| This paper proposes a reliable pairwise key-updating (RPKU) scheme for clustered WSNs via predistribution and local collaboration approaches. Based on the modified version of Blom's matrix construction, this scheme can extend and shrink the pairwise keys in WSNs with the network topology changes. This scheme also presents a hierarchical key distribution method in the clustered WSNs, guaranteeing that any pair of neighboring nodes can find a common secret key between themselves. Comparison and simulation results show that the proposed scheme outperforms most of the existing pairwise key establishment schemes in terms of network security, key connectivity and scalability. |
| Key words: wireless sensor network key distribution key-updating Blom's matrix security |
