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Increasing Resiliency in Multi-phase Wireless Sensor Networks:Generationwise Key Predistribution Approach

机译：多相无线传感器网络中增强弹性：按代生成密钥预分配方法

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摘要

In wireless sensor networks (WSNs), sensor nodes eventually die due to battery depletion. WSNs in which new nodes are periodically redeployed with certain intervals, called generations, to replace the dead nodes are called multi-phase WSNs. In the literature, there are several key predistribution schemes proposed for secure operation of WSNs. However, these schemes are designed for single-phase networks which are not resilient against continuous node capture attacks; even under temporary attacks on the network, the harm caused by the attacker does not heal in time. However, the periodic deployments in multi-phase sensor networks could be utilized to improve the resiliency of the WSNs by deploying nodes with fresh keys. In the literature, there is limited work done in this area. In this paper, we propose a key predistribution scheme for multi-phase WSNs which is resilient under node capture attacks. In our scheme, called random generation material (RGM) key predistribution scheme, each generation of deployment has its own random keying material and pairwise keys are established between node pairs of particular generations. These keys are specific to these generations. Therefore, a captured node cannot be abused to obtain keys of other generations. We compare the performance of our RGM scheme with a well-known multi-phase key predistribution scheme and show that RGM achieves up to 3-fold more resiliency. Even under heavy attacks, our scheme's resiliency performance is 35% better in steady state.
机译：在无线传感器网络（WSN）中，传感器节点最终由于电池耗尽而死亡。在其中以一定间隔定期重新部署新节点（称为世代）以替换失效节点的WSN称为多阶段WSN。在文献中，为无线传感器网络的安全操作提出了几种关键的预分配方案。但是，这些方案是为单相网络设计的，它们不能抵御连续的节点捕获攻击。即使在网络受到临时攻击时，攻击者造成的伤害也无法及时治愈。但是，通过使用具有新鲜密钥的节点，可以利用多相传感器网络中的定期部署来提高WSN的弹性。在文献中，在这一领域所做的工作有限。在本文中，我们提出了一种针对多阶段WSN的关键预分配方案，该方案在节点捕获攻击下具有弹性。在我们的称为随机生成材料（RGM）密钥预分配方案的方案中，每个部署阶段都有自己的随机密钥材料，并且在特定代的节点对之间建立了成对密钥。这些密钥特定于这些世代。因此，不能滥用捕获的节点来获取其他世代的密钥。我们将RGM方案的性能与著名的多阶段密钥预分配方案进行了比较，结果表明RGM的弹性提高了3倍。即使在严重的攻击下，我们的方案在稳定状态下的弹性性能也可以提高35％。

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