A Mobility-Aware Trust Management Scheme for Emergency Communication Networks Using DTN

In the aftermath of a disaster, collecting and disseminating critical information is very challenging. The damage to telecommunication infrastructures makes its extremely difficult to have an effective recovery and relief operation. In this paper, we consider the use of DTN as an alternative measure to temporarily disseminate emergency information in a post disaster scenario using the Post Disaster Model recommended by IETF. We consider internally motivated attacks where responder nodes are compromised thereby dropping packets forwarded to them. We design a Mobility-Aware Trust Management Scheme (MATMS) to mitigate this routing misbehaviour. We evaluate our proposed scheme through extensive simulations and compare our results with existing benchmarks schemes. Our results show that the use of adequate collaborative strategies can improve the performance of DTNs under attack taking into consideration the delivery probability and message delay from source node to the destination node.