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首页> 外文会议>European Symposium on Research in Computer Security(ESORICS 2004); 20040913-15; Sophia Antipolis(FR) >Combinatorial Design of Key Distribution Mechanisms for Wireless Sensor Networks
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Combinatorial Design of Key Distribution Mechanisms for Wireless Sensor Networks

机译：无线传感器网络密钥分发机制的组合设计

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摘要

Key distribution is one of the most challenging security issues in wireless sensor networks where sensor nodes are randomly scattered over a hostile territory. In such a sensor deployment scenario, there will be no prior knowledge of post deployment configuration. For security solutions requiring pairwise keys, it is impossible to decide how to distribute key pairs to sensor nodes before the deployment. Existing approaches to this problem are to assign more than one key, namely a key-chain, to each node. Key-chains are randomly drawn from a key-pool. Either two neighboring nodes have a key in common in their key-chains, or there is a path, called key-path, among these two nodes where each pair of neighboring nodes on this path has a key in common. Problem in such a solution is to decide on the key-chain size and key-pool size so that every pair of nodes can establish a session key directly or through a path with high probability. The size of the key-path is the key factor for the efficiency of the design. This paper presents novel, deterministic and hybrid approaches based on Combinatorial Design for key distribution. In particular, several block design techniques are considered for generating the key-chains and the key-pools. Comparison to probabilistic schemes shows that our combinatorial approach produces better connectivity with smaller key-chain sizes.
机译：密钥分发是无线传感器网络中最具挑战性的安全问题之一，在无线传感器网络中，传感器节点随机分布在敌对地区。在这种传感器部署方案中，将没有部署后配置的先验知识。对于需要成对密钥的安全解决方案，不可能在部署之前决定如何将密钥对分配给传感器节点。解决该问题的现有方法是为每个节点分配一个以上的密钥，即密钥链。钥匙链是从钥匙库中随机抽取的。两个相邻节点在它们的密钥链中有一个公共密钥，或者在这两个节点之间有一条称为密钥路径的路径，其中该路径上的每对相邻节点都有一个公共密钥。这种解决方案的问题是决定密钥链的大小和密钥池的大小，以便每对节点都可以直接或通过路径以高概率建立会话密钥。关键路径的大小是设计效率的关键因素。本文提出了基于组合设计的密钥分配新颖，确定性和混合方法。特别是，考虑了几种块设计技术来生成密钥链和密钥池。与概率方案的比较表明，我们的组合方法使用较小的钥匙链可以产生更好的连接性。

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