Security

Thwarting Blackhole Attacks in Distruption-Tolerant Networks Using Encounter Tickets

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Executive Summary

Nodes in Disruption-Tolerant Networks (DTNs) usually exhibit repetitive motions. Several recently proposed DTN routing algorithms have utilized the DTNs' cyclic properties for predicting future forwarding. The prediction is based on metrics abstracted from nodes' contact history. However, the robustness of the encounter prediction becomes vital for DTN routing since malicious nodes can provide forged metrics or follow sophisticated mobility patterns to attract packets and gain a significant advantage in encounter prediction. In this paper, the authors examine the impact of the blackhole attack and its variations in DTN routing.

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