Secure Data Aggregation in Wireless Sensor Networks

Abstract

The biggest advantage of building “intelligence” into a sensor is that the sensor can process data before sending them to a data consumer. The kind of processing that is often needed is to aggregate the data into a more compact representation called an aggregate, and send the aggregate to the data consumer instead. The main security challenges to such a process are (1) to prevent Byzantine-corrupted data from rendering the final aggregate totally meaningless and (2) to provide end-to-end confidentiality between the data providers and the data consumer. This chapter surveys the state of the art in techniques for addressing these challenges.