SAAQ: Secure Aggregation for Approximate Queries in WSNs

Wireless Sensor Networks are vulnerable to communication failures and security attacks. Multipath based aggregation techniques such as synopsis diffusion are proposed to address communication failures. This chapter proposes Secure Aggregation for Approximate Queries in Wireless Sensor Networks (SAAQ) where Message Authentication Codes (MACs) are transmitted along with the synopses that are generated using primitive polynomials. SAAQ ensures data freshness and integrity at a communication cost of O(1). Simulation results show that the SAAQ protocol results in lower energy consumption and communication and computation cost compared to the state-of-art protocols [1, 2]