Distributed Digital Identity Parking Authentication System Based on Blockchain

As the number of vehicles increases, the issue of protecting drivers' privacy during parking has become increasingly prominent. Therefore, a distributed digital identity parking authentication system based on blockchain was proposed. By implementing distributed identity authentication based on blockchain, anonymous identity verification and selective information sharing are achieved during parking. By using the trusted oracle on the blockchain to obtain license plate data, the license plate information matching is completed directly in the smart contract, completing the parking authentication process in a closed loop on the blockchain. The usage process of distributed decentralized identity (DID) in the parking authentication process is designed. The usability and effectiveness of the designed system are proved by system experiment and performance analysis.