Privacy-preserving Broadcast Protocol in Vehicular Ad Hoc Networks

Guang Yang ； Leyou Zhang ； Ruonan Ma

《International Journal of Network Security》 25卷3期 (2023/05) Pp. 468-476

https://doi.org/10.6633/IJNS.202305_25(3).10

摘要

In vehicular ad hoc networks (VANETs), a vehicle always sends and receives different sensitive information on the road. It will issue some threats to the privacy of a vehicle and users since the communication can link their identity to their physical entity. Hence secure broadcast has been an important issue and gained more and more researchers' attention in real life. In addition, authorities and official vehicles should confirm the authenticity of the reported node without exposing the sender's identity. The anonymous broadcast protocol can support the secure and anonymous transmission of vehicle safety broadcast messages, achieving the receivers' privacy protection. This article introduces an attribute-based encryption system's new anonymous broadcast protocol. And a hybrid broadcast algorithm is put forth to show the efficiency and security of the introduced scheme. Furthermore, the sharing information of the proposed scheme achieves constant size, which is essential for the resource-constrained VANETs since it consists of the rapid movement of the nodes. The proposed scheme also supports the dynamic management of the vehicles in the VANETs and does not need to fix the maximum depth of the VANETs. Finally, computational results confirm the merits of the proposed scheme.

關鍵字

Anonymous Broadcast Protocol ； VANETs ； CP-ABE ； Privacy Protection