D-BlockAuth: An Authentication Scheme Based Dual Blockchain for 5G-Assisted Vehicular Fog Computing

Vehicular fog computing (VFC) is a developing concept that utilizes the ideas of fog computing to facilitate immediate communication and cooperative decision-making among vehicles. However, guaranteeing safe authentication in VFC presents notable difficulties as a result of characteristics such as dynamic network topology, extensive mobility, and limitations on resources. This paper introduces D-BlockAuth, an innovative authentication mechanism for 5G-assisted VFC that utilizes a dual blockchain approach. To reach the most vehicles, this link makes use of all the features of the fifth-generation base station (5G-BS). D-BlockAuth employs two blockchains: a permissioned blockchain to handle long-term identities and a consortium blockchain to enable streamlined and effective authentication at the fog layer. The D-BlockAuth concept incorporates advanced cryptographic techniques such as ring signatures and group signatures, which provide improved privacy and anonymity for vehicles within the network. The study provides a comprehensive description of the architecture of D-BlockAuth, examines its security characteristics, and assesses its performance using simulations. The results indicate that D-BlockAuth successfully performs both efficient and safe authentication in VFC, while also maintaining user privacy.