Secure Multi-period Routing in the Delay Tolerant Networks

The Delay/Disruption Tolerant Network (DTN) is characterized with intermittently connectivity and frequent partitions. Due to this, the DTN routing algorithm is very vulnerable to various kinds of malicious attacks. In this paper, combined with many other DTN forwarding approaches, we propose a multi-stage routing forwarding algorithm so as to further improve network throughput. To ensure the security advantages of multi-period routing, we also need to take the efficiency of the routing algorithm into account. The concept of trade-off coefficient is introduced in this paper in order to balance the security and efficiency. Through the security analysis and simulation result, we can reach the conclusion that by setting a reasonable trade-off factor, the mechanism can effectively resist the joint attack and also optimize the network performance.