Selection of Secure Cluster Head with Trust Management Based Routing Protocol for WSN

Wireless Sensor Networks (WSNs) are networks composed of small, low-power and low-cost sensor nodes which are densely deployed to monitor the physical environment. Security is one of the major challenges in the development and deployment of WSNs. Trust Management Based Routing Protocol (TMBRP) is a routing protocol based on trust level established among nodes in a WSN. It helps to identify trustworthiness of nodes in the network and prevent malicious nodes from participating in routing. The protocol works in distributed manner by integrating trust management mechanism with routing algorithm to improve the security of the networks. At the same time, it also facilitates to select the most secure path for transmission. The TMBRP protocol deploys a distributed trust model which is based on the trust level of discovered sensor nodes. Through this trust model, future routing decisions are made according to the trust level of nodes. TMBRP protocol is efficient, resilient and secure and therefore, it is well-suited for heterogenous environments where some of the nodes may be compromised.