Secure data aggregation scheme based on key vector sharing in Wireless Sensor Network

A secure data aggregation scheme based on key vector sharing is proposed. New key set is negotiated among sink and sensor nodes, and then each sensor node uses one key in the set to encrypt and decrypt sensory data. A key vector structure is constructed and shared among them. Since the size of the shared key vector structure is constant, the transmission overhead is saved in the proposed scheme while security is ensured. Moreover, MAC integrity mechanism is also included in the proposed scheme. Compared with those existed schemes, the proposed scheme reduces the transmitted overhead so as to save the energy consumption of each sensor node. Meanwhile, the scheme is data-loss resilient. Simulation and analysis results also confirm the good performance of the proposed scheme.