关键词: 区块链, 车联网, 多因素认证, 跨域认证, 智能合约

Abstract: With the rapid rise in the number and prevalence of vehicular network (IoV) applications and services, the number of users has continuously increased, making the security of the IoV environment a crucial concern. In IoV systems, there is a risk of vehicle information being stolen or tampered with, which further affects the healthy operation of the system. To address this issue, this paper proposes a blockchainbased crossdomain authentication scheme for IoV. By integrating the entire IoV into a consortium blockchain, the trust gap between different domains is effectively resolved. Multifactor authentication of vehicle user information is employed to effectively prevent information leakage and ensure data security. The combination of blockchain and authentication technologies significantly reduces redundant operations in user identity authentication while enabling synchronized queries of IoV information. From a data security perspective, the security analysis demonstrates the feasibility of this scheme.

Key words: blockchain, IoV, multifactor authentication, crossdomain authentication, smart contract