title   
  

Uneven key predistribution scheme for multiphase wireless sensor networks

Çatakoğlu, Abdullah Onur (2013) Uneven key predistribution scheme for multiphase wireless sensor networks. [Thesis]

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Official URL: http://risc01.sabanciuniv.edu/record=b1534450 (Table of Contents)

Abstract

In multiphase Wireless Sensor Networks (WSNs), sensor nodes are redeployed periodically to replace nodes with depleted batteries. In order to keep the network resilient against node capture attacks across different deployment epochs, called generations, it is necessary to refresh the key pools from which cryptographic keys are distributed. In this thesis, we propose Uneven Key Predistribution (UKP) scheme that uses multiple different key pools at each generation. Keys are drawn unevenly from these key pools and loaded to sensor nodes prior to deployment. Nodes are loaded with keys not only from their current generation, but also from future generations. We conduct simulation based performance evaluation in mobile environments using three different mobility models. One of them, Circular Move Mobility model, is first proposed in this thesis. Our UKP scheme provides self healing that improves the resiliency of the network up to 50% under heavy attack as compared to an existing scheme in the literature. Moreover, our scheme provides almost perfect local and global connectivity.

Item Type:Thesis
Uncontrolled Keywords:Wireless sensor network. -- Key predistribution. -- Multiphase sensor network. -- Resiliency. -- Security. -- Telsiz duyarga ağları. -- Anahtar ön dağıtımı. -- Çoklu fazlı duyarga ağları. -- Dayanıklılık. -- Güvenlik.
Subjects:T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK7800-8360 Electronics > TK7885-7895 Computer engineering. Computer hardware
ID Code:34340
Deposited By:IC-Cataloging
Deposited On:29 Mar 2018 16:41
Last Modified:29 Mar 2018 16:41

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