Research And Design Of Privacy Protection Algorithm For Wireless Sensor Network Data Fusion

Wireless sensor network(WSN)is a type of wireless self-organized network,which constitute of plentiful tiny sensor nodes.The sensor node is principally utilized to gather and dispose the data obtain from the physical environment.Afterwards,data is transmitted to an external base station.The resources of sensor nodes are usually restricted,in order to reduce the transmission frequency of sensor nodes,lower the overall energy consumption of the network,data information need to be aggregated,eliminate the redundant data in the transmission process,improve the service life of the energy in wireless sensor network.Although the data aggregation technology of wireless sensor network(WSN)has been researched extensively,when the nodes in the sensor network are deployed in a hostile environment,the nodes will confront security problems in the process of data aggregation.For example,the privacy data of nodes will be filched by attackers.Once the attacker attacks the sensor nodes through physical attacks or logical attacks on communication protocols,the sensor networks will be vulnerable to attack and destruction.Therefore,how to safeguard secure data aggregation in wireless sensor network is a significant issue.The main research contents and innovation points of this paper are as follows:(1)Aiming at the problem of excessive communication consumption in secure data aggregation of wireless sensor network,this paper puts forward a low energy consumption privacy-protected data aggregation algorithm,LECPDA.which is an amelioration of the classical data aggregation privacy algorithm(CPDA).Firstly,the private data is segmented by data slicing technology,and the slicing data is divided into sub-data,then the data is perturbed by simple addition aggregation.Finally,the micro data aggregation protocol(TAG)is utilized for data aggregation.Contrasted with the classical CPDA algorithm,the LECPDA algorithm can not only effectively reduce the data consumption,decrease the computational procedure,but also satisfies the ordinary privacy requirements.(2)Aiming at the problem of poor privacy protection ability of node data in the process of data aggregation in wireless sensor network.This paper puts forward a secure and efficient data aggregation privacy protection algorithm,SECPDA.In the SECPDA algorithm,Firstly,SEP protocol is utilized to dynamically select cluster head nodes,which can balance the communication consumption of the whole network.Secondly,the idea of slicing is introduced to slice private data and generate false information for interference,which causes it even more difficult for attackers to filch information.Finally,a comprehensive experimental evaluation of data flow and privacy protection performance is made.The results indicate that the proposed SECPDA algorithm can effectively reduce the data consumption and further improve the data privacy of nodes.