The Research On Secure Data Aggregation Schemes In Wireless Sensor Networks

With the advance of sensor manufacture technology and development of wireless communication, wireless sensor networks (WSN) have used into many spheres, such as industry, commerce and military. WSN is composed of hundreds of thousands of sensor nodes with limited energy, computation and storage capacities. So the energy utilization has become a key design goal. Because the data aggregation technique can help to improving bandwidth usage and energy utilization, thus it used widely in practice. Data aggregation can greatly help conserve the energy resources by eliminating redundant data in WSN, but it also introduces additional security concerns (such as eavesdrop attacks, data tamper attacks, data forge attacks and reply attacks). So the researches on secure aggregation become meaningful.In this paper, we mostly focus on the data confidentiality and the data integrality, and proposed two accordingly secure data aggregation schemes.First, this paper proposed a privacy data aggregation scheme. This scheme use the multiplexing technology to ensure the adversary can't achieve the data by eavesdropping or compromised the nodes. Compared with the corresponding scheme in the case the secure threshold is equal, the scheme can decrease overload of the transmission. And our scheme has better performance on both collusion prevented and resilience.Then, this paper proposed a data aggregation integrality verified scheme for hierarchical networks. This scheme extend the corresponding scheme, and used into the data aggregation sphere. It can verify the integrality of the data aggregation result by the base station or intermediate nodes, ensure the adversary can't tamper or forge the aggregation result by compromised the aggregation nodes. And our scheme has good performance on both security and resilience.