Selective & Secured Code Distribution Approach for Multihop Wireless Sensor Networks

AbstractThis paper proposes an efficient code distribution approach for multihop wireless sensor networks in heterogeneous environment. Reprogramming a sensor network necessitate to fulfil the changing application requirements, bug fix as it is impractical to reach the node once deployed. We are presenting an efficient code distribution scheme to update the running code in sensors over the air with secure authentication & completion verification. The experimental results shows how proposed approach sdeluge is efficient in terms of significant reduction in average completion & dissemination time, advertisement rate, average energy consumption consequently improvement in lifetime of the network

User Authentication Techniques for Wireless Sensor Networks : A Survey

A wireless sensor network(WSN) consisiting of a large number of tiny sensors can be an effective tool for gathering data in diverse kinds of environments.The data collected by each sensor node is communicated to the base station,which forwards the data to the end user. In wireless sensor network data security plays an important role where confidentiality, authentication, integrity, non repudiation are given importance.This paper synthesizes existing user authentication schemes in wirelss sensor networks and highlights the challenges in user authentication