Privacy and Integrity Preserving in Disruption Tolerant Networks

Abstract

Disruption Tolerant Network (DTN) has lack of continuous network connectivity, because of the limits of radio communication range and shortage of energy resources. There are many researches about data forwarding in DTNs, while limited work on providing efficient data access. In this paper, we propose an efficient coordinated caching scheme, which enables the data query to be satisfied quickly using network central locations(NCL), which can easily accessed by all nodes in the network. We present a novel algorithm to select the NCLs, and we propose a model that prevents attackers from gaining information from NCLs and destination issued queries. It also allows a destination to detect compromised NCL when they misbehave.