关键词: 自动驾驶仿真测试, 区块链, 智能合约, 数据存证, 数据安全

Abstract: To address the security issues arising from data sharing among multiple participants in autonomous vehicle simulation testing, a blockchain-based data notarization model for autonomous driving simulation testing is proposed. This model leverages blockchain to ensure secure storage and traceability of data, providing reliable support for auditing processes. Firstly, the semi-public nature of consortium blockchain ensures that simulation test data is only accessible to authorized organizations, and a Role-Based Access Control (RBAC) mechanism is implemented to achieve secure data access control. Secondly, the data access process is standardized through the definition of smart contract templates on the blockchain, and custom functionalities are supported via open process extension points. For the trading of simulation resources, associated contracts are employed to ensure the automatic execution of transactions, facilitating seamless resource access within the simulation process. Lastly, the optimization strategies, including IPFS-based hybrid on-chain and off-chain storage, batch data processing, and resource data caching, address the limitations of blockchain storage resources and processing capabilities. Experimental results demonstrate that for the notarization of data in 500 simulated scenarios, these optimization measures lead to a 72% reduction in transaction volume, with the time required for data writing and reading on the blockchain reduced by 85.31% and 52.67%, respectively.

Key words: autonomous driving simulation testing, blockchain, smart contracts, data notarization, data security