Energy Efficient and Trust Based Node Disjoint Multipath Routing Protocol for WSN

Wireless Sensor Networks comprises of thousands of sensor nodes that are low power and low cost. WSNs have gained wide applicability recently. Also, the major part of applications are real time and critical like Military, environmental monitoring etc. Thus, WSNs are highly susceptible to vulnerabilities. Hence, security of data is a very important issue. Every layer of the network is subjected to security threat. This paper concentrates on the network layer security. This paper presents a node disjoint multipath routing protocol which is not only energy efficient but also trust based. Energy efficiency is observed by using multipath routing. Also security is imparted by selecting the best path among multipaths based on maximum residual energy and trust among the nodes. Then, public crypto system is applied over the data and it is forwarded through the best path.