A Bandwidth-Efficient Cooperative Authentication and an En-route Filtering Scheme for Filtering Injected False Data in Wireless Sensor Networks

Injecting false data attack is awell-knownseriousthreat to wireless sensor network, for which anadversary reports bogus information to sink causingerror decision at upper level and energy waste in en-route nodes. In this paper, we propose a novelbandwidth-efficient cooperative authenticationscheme for filtering injected false data. Theproposed method of BECAN can save energy byconsidering the random graph characteristics ofdeployment of sensor node and a technique forcooperative bit-compressed authentication and thismethod is done by early detection and filtering mostof injected false data at the en-route nodes withminor extra overheads. Further, it is necessary tocheck at the sink, a very small amount of injectedfalse data which largely helps to reduce burden onthe sink. For the proposed method, theoretical andsimulation results are given which shows theeffectiveness regarding high filtering and energysaving.We propose an EFSP (En-route FilteringScheme based on Priority) to control the number ofvotes. The EFSP determines priorities through thefuzzy rule-based system. Base station sends priorityto the cluster head and then according to thepriority a specified number of votes are attached tothe report by the cluster head.