A RDA Framework against False Data Aggregates in CWSN

Sensor networks generate enormous amounts of redundant sensing data. Data aggregation techniques are required to gather and aggregate these sensor data, by which the aggregator nodes forward to the base station only the aggregate results. When a Cluster-based Wireless Sensor Network (CWSN) is deployed in an unattended environment, the sensor nodes and aggregators become highly vulnerable to various security attacks. Security violation at aggregators may lead to the routing of false data aggregates to the base station. To ensure secure aggregation and data integrity, a Robust Data Aggregation (RDA) framework is proposed in this paper. The idea is to aggregate data by varying the aggregator roles and to support integrity using a Signature-based Validation (SV) scheme. The proposed framework would enable data to be aggregated and authenticated in a robust and secure manner.