Secure Routing and Broadcast Authentication in Heterogeneous Sensor Network

Abstract

Security of sensor network communication architecture relies on its routing scheme. Previously security was not issue of routing protocols. But now security is adequate for routing. Homogeneous sensor networks are less efficient due to limitations of scalability and are prone to routing attacks due to resource constraints. Heterogeneous sensor networks have proven to be more secure and scalable. Sensor network used is heterogeneous. Routing tables are generated with multipath routing. Base station generates inter-cluster routes and cluster head generates intra-cluster routes. This minimizes the computation load on cluster nodes. Light-weight broadcast authentication is used for secure routing table generation and data communication; and to reduce communication overhead. Goal of proposed scheme is to introduce security architecture with in routing protocol. Security analysis shows that scheme is secure against routing attacks and is tolerant to compromised nodes. Moreover damage due to compromised nodes is only confined locally.