Research On Wireless Sensor Network Dataprocessing Algorithms Based On Privacy Preserving

Wireless sensor network(WSN)becomes more and more important in our daily life.A WSN is composed of a great lot of temporally and spatially distributed low-cost sensor nodes with multi-functions,which can detect physical and environmental phenomena such as temperature,humidity,pressure.Hence,Wireless sensor networks(WSNs)have been widely deployed in various applications such as battlefield surveillance,environment and animal monitoring,traffic dispersion and smart home system construction.WSN is an ad hoc network and its sensors are resource-constrained with limited energy,storage and computation capacity.The data privacy of WSN has been regarded as one of emerging technologies with great application prospect in the 21 st century,most of the reaseach mainly aimed at the Privacy Protection of data aggregation and data query.However,most of the existing data processing algorithms only supports certain kinds of data operation.this paper take more consideration on how to balance the relationship of data security and energy saving.The main innovation points are as follows:1?Energy-saving Privacy-preserving Data Aggregation is a hot issue in the research of Wireless Sensor Network(WSN)for the sake of resource-limitation.To reduce the communication overhead on the premise of privacy protection,this paper presents a new secret Confusion based Energy-Saving Privacy-preserving da Ta aggregation algorithm(CESPT).In data confusion phase,CESPT confuses the real sensory data and its source by the positive-negative numeric pair and introduces a confusion factor m to calculate the amount of confusion data pair generating by a sensor,the confusion data exchange round and the threshold of sending confusion data,which controls the communication overhead and privacy intensity of WSN.And in aggregation phase,CESPT adopts positive-negative neutralization strategy and well-designed time slice allocation mechanism to reduce the aggregation traffic and message collision.In all,CESPT algorithm can not only greatly reduce the aggregated time and data traffic which in turn to reduce the network energy consumption but also get accurate statistical results on the premise of protecting data privacy.2?Low energy consumption and high privacy are key factors of range query algorithm in the wireless sensor network.The paper proposed a secure range query algorithm called EPRN(Energy-Saving and Privacy-Preserving Range Query in Wireless Sensor Networks)and the algorithm separates transmission process form query process,which can avoid all of the sensor data sended to storage Sink or nodes,greatly reducing the traffic in the process of network communication and extended the network lifespan,meanwhile,sensory data and the information of query range are proceed with the technologies of data encryption and prefix membership verification,which can ensure the protection of data.Analyses and simulation results show that the algorithm can better balance the relationship of power consumption and data privacy.