S-ATMChain: Blockchain-Based Data Sharing Method for Air Traffic Management

The air traffic management (ATM) system is an important basic implementation to ensure the security of air transportation, and it is of great significance to research the security and privacy protection issues in ATM data sharing. At present, the data sharing among many ATM application systems is increasing, and there are considerable security risks in terms of security, integrity, privacy, and efficiency. Blockchain is a representative distributed ledger technology, which has advantages in evidence traceability, multiparty collaboration, and information control that can be applied to the field of ATM data security sharing. This article integrates a blockchain–cloud storage application into ATM data sharing and designs S-ATMChain, a blockchain-based ATM data sharing method. Focusing on the traceability and verification requirements in ATM data sharing, S-ATMChain realizes a new model of ATM data sharing that is trustworthy, secure, controllable, usable, and verifiable. Further, this article designs smart contracts in three dimensions: ATM data identification, ATM data sharing control, and ATM data traceability–tracking to realize the security and privacy protection of the whole life cycle of ATM data. Finally, through the analysis and verification, the model and algorithm proposed in this article have certain feasibility and advancement, achieve the expected effect, and have the prospect of practical application.