BEAF: A Blockchain and Edge Assistant Framework with Data Sharing for IoT Networks

Edge computing is emerging as an innovative technology that brings data processing and storage to end users, further leading to scale, decentralization and safety to IoT netWorks. It improves the quality of services but meanwhile introduces great challenges such as data security, latency, etc. Fortunately, blockchain technology can improve security issues of edge computing in IoT networks as it alloWs only trusted IoT nodes to interact With each other. To better address the security risks of data sharing problem and improve the credibility of data, this paper presents a Blockchain and Edge computing Assistant security FrameWork (BEAF) With data sharing for IoT netWorks. With blockchain and edge computing, BEAF supports both decentralization and data tracing after data sharing. In addition, BEAF can achieve access control and share data to specific node. We also conduct security analysis and shoiv that BEAF provides confidentiality, availability, data integrity, etc. In addition, We develop the base layer through Hyperledger Fabric technology, and evaluate the performance of BEAF in terms of stability, scalability and efficiency.