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Key Management in Wireless Ad Hoc Networks: Collusion Analysis and Prevention
| Content Provider | CiteSeerX |
|---|---|
| Author | Ghumman, Kajaldeep Eltoweissy, Mohamed Younis, Mohamed |
| Abstract | Due to the dynamic nature of WAHN communications and the multi-node involvement in most WAHN applications, group key management has been proposed for efficient support of secure communications in WAHNs. Exclusion Basis Systems (EBS) provide a framework for scalable and efficient group key management where the number of keys per node and the number of re-key messages can be relatively adjusted. EBS-based solutions, however, may suffer from collusion attacks, where a number of nodes may collaborate to reveal all system keys and consequently capture the network. In this paper we investigate the collusion problem in EBS and demonstrate that a careful assignment of keys to nodes reduces collusion. Since an optimal assignment is NP hard, we propose a location-based heuristic where keys are assigned to neighboring nodes depending on the hamming distance between the strings of bits representing the used subset of the keys employed in the system. Simulation results have demonstrated that our proposed solution significantly boosts the network resilience to potential collusion threats. |
| File Format | |
| Access Restriction | Open |
| Subject Keyword | Collusion Problem Re-key Message Network Resilience Collusion Attack Dynamic Nature Efficient Group Key Management Multi-node Involvement Exclusion Basis System Secure Communication Used Subset Potential Collusion Threat Location-based Heuristic Wahn Communication Wahn Application Group Key Management Key Management System Key Collusion Analysis Optimal Assignment Ebs-based Solution Careful Assignment Simulation Result Node Reduces Collusion Wireless Ad Hoc Network Efficient Support |
| Content Type | Text |
| Resource Type | Article |
