FDSS: Flight data sharing scheme based on blockchain with dynamic, secure and efficient consensus algorithm

As the number of data providers and the volume of data in flight data sharing networks continue to grow, achieving secure and efficient sharing of flight data across multiple institutions faces significant challenges. The phenomenon of data silos is prevalent, severely hindering the flow and utilization of information. To address these issues, this paper proposes a flight data sharing scheme (FDSS) that integrates cloud computing and blockchain. In this scheme, we propose a separation mechanism of metadata on-chain storage and entity data off-chain storage, which effectively improves the data storage efficiency. At the same time, we also offload the complex computation tasks during data access to the edge servers for processing, which realizes the refinement of data access and reduces the computation burden on the user side. Given that all information exchanges between data requesters and data owners are conducted via the blockchain, the block generation speed becomes critical to ensure the efficient operation of the scheme. To this end, we also make significant improvements to traditional consensus algorithms, aiming to comprehensively enhance the overall system efficiency. In the end, through in-depth theoretical analysis and experimental verification, the FDSS scheme demonstrates excellent performance and high feasibility, fully proving its great potential and value in the field of flight data sharing.