Teaming up authentications to balance anonymity and efficiency of vehicular networks

Al Shareeda S. Y. A., Ozguner F.

2018 International Conference on Innovation and Intelligence for Informatics, Computing, and Technologies, 3ICT 2018, Sakhier, Bahrain, 18 - 19 November 2018 identifier

  • Publication Type: Conference Paper / Full Text
  • Doi Number: 10.1109/3ict.2018.8855763
  • City: Sakhier
  • Country: Bahrain
  • Keywords: Authentication, Chosen Message Attack, Communication Overhead, Group Signature, Identity-based Authentication, Public Key Infrastructure, Vehicle Drop Rate, Vehicular Networks
  • Istanbul Technical University Affiliated: Yes


The type of the utilized authentication framework in internet of vehicles/vehicular network reduces the number of cars that can simultaneously seize the wireless channel. Some frameworks have less communication overhead while others have more anonymous traits; therefore, using a single authentication is a biased stance. In this work, we introduce an authentication interchange scheme that intermingles between three frameworks: Public Key Infrastructure (PKI), Group Signature (GS), and our Identity-based Cryptographic (IBC) authentication. Our scheme is context-aware, i.e., every certain time interval, the PKI vehicle checks its context; if the vehicle encounters a crowded neighborhood, it switches to a lower-overhead IBC authentication. If the car's context is sparse, it alters to a more anonymous GS framework. We prove the scheme security by a valid argument using the strategies of attacker games and forking lemmas. To analyze the effectiveness of the scheme, we define several performance metrics as well as the communication scenario. The results prove that the interchanged scheme is more effective than the case of having one pure secure authentication throughout the network lifetime; our approach is computably fast and does not compromise the autos' anonymity. Also, the scheme achieves less vehicle drop rate compared with the available pure frameworks.