Energy Efficient Secure Routing in Delay Tolerant Networks using Dynamic Trust Aware Routing Protocol

Trust management is challenging in wireless sensor networks due to dynamically changing network environments and the lack of a centralized trusted authority for improving the network security. Delay Tolerant Networks is distinguished by lack of continuous network connectivity, resulting in a lack of instantaneous end to end paths, large end to end delays and intermittent links. In earlier, even though the message delivery ratio and message delay is efficient, but large amount of energy is used. To reduce energy usage and we further increase the throughput and packet delivery ratio, we design and validate a Dynamic Trust Aware Routing Protocol (DTARP) for energy efficient secure routing in Delay Tolerant Network environments in the presence of selfish, well behaved and malicious nodes. To analyze and for validation for the Trust Protocol (TP), we use a mathematical model based on stochastic petri net (SPN). We propose to combine social trust which is derived from social networks and traditional Quality of Service (QOS) trust which is derived from communication networks into a composite trust based metric to assess the trust of a node in a Delay Tolerant Networks.