Disjoint Multipath Based Secure Routing in Opportunistic Networks

Opportunistic Networks (OppNets) are composed of wireless nodes opportunistically communicating with each other. These networks are designed to operate in a challenging environment characterized by high delay, intermittent connectivity, and no-guarantee of fixed path between the sender and destination nodes. One of the most vital issues in designing such a network is the security of the messages flowing in it. This paper proposes a new method called Disjoint Multipath based Secure Routing in Opportunistic Networks, called as D-MUST, which relays the message to the destination through four disjoint paths; each applying a soft-encryption technique to prevent message fabrication attacks. Simulations are conducted using the HAGGLE INFOCOM 2006 real mobility data traces, showing that when time-to-live is varied, (1) the proposed D-MUST scheme outperforms RSASec by 15.05%, 8.4%, 5.81% 2.16% respectively in terms of delivery probability, hop count, messages dropped and average latency; (2) it also outperforms SHBPR by 16.17%, 9.2%, 6.85%, 3.95% respectively in terms of delivery probability, hop count, messages dropped and average latency.