Data aggregation is an essential technique that has been widely used in Wireless Sensor Networks (WSNs) to reduce the energy consumption of sensor nodes. It can preserve the significant amount of energy by aggregates data from sensor nodes which reducing the number of data packets. However, data aggregation applications need integrity protection and privacy preserving of the data while transmitting it from sensing nodes to the base station. The existing schemes such as IPDA, ICPDA, and PEPPDA suffer from high communication, computation cost and data delay even it support both privacy and integrity. Therefore, this paper proposes an efficient, secure data aggregation scheme for wireless sensor networks. The proposed scheme eliminates redundant sensor data without using decryption and maintains data privacy during transmission. We use the additive property of complex numbers to support privacy and integrity checking. The complex number has two parts; the real part will be used to hide sensitive data and the imaginary part will be used to check the integrity of the aggregated data. The proposed scheme is compared with IPDA, ICPDA, and PEPPDA in terms of communication overhead, accuracy, and energy consumption. Simulation results show that the proposed scheme achieves better performance than other schemes by reducing the communication overhead and checking the integrity of aggregated data without the delay of aggregated data. It also increases the network lifetime by eliminating the redundant data transmitted from each sensor node.
展开▼
