Secure outsourced aggregation via one-way chains

摘要: We consider the Outsourced Aggregation model, where sensing services outsource their sensor data collection and aggregation tasks to third-party service providers called aggregators. As aggregators can be untrusted or compromised, it is essential for a able verify correctness of results. This work presents SECOA, framework with family novel optimally-secure protocols secure outsourced aggregation. Our based on unified use one-way chains. It supports large diverse set aggregate functions, have multiple hierarchically organized aggregators, deterministically detect any malicious behavior without communication sensors, incurs small workload-independent load sensors. also present extensive evaluation results demonstrate feasibility our framework.