Credible Secure Data Aggregation in Wireless Sensor Networks

Wireless sensor networks contain large number of low-cost sensor devices called nodes that have severely limited in sensing, computation, and communication abilities. In order to improve the sensor network lifetime, the amount of data transmission minimization is a vital issue. Data aggregation is the technique which is used to minimize the rate of data transmission among the sensor networks. Data aggregation is the process of merging sensor data in order to moderate the quantity of data transmission in the network. The results of data aggregation are typically used to make serious decisions; hence, the correctness of final aggregation results is very important. In this paper, credible-based secure data aggregation (CDA) is proposed to ensure the quality of data aggregation. The main idea of this scheme is that secured, accurate data aggregation is achieved based on the credible value of the sensor nodes. The simulation results show that protocol CDA considerably expands the system reliability through secured data aggregation in the occurrence of compromised nodes.