Securing V2X Communications for the Future - Can PKI Systems offer the answer?

Thanassis Giannetsos, Ioannis Krontiris

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Abstract

Over recent years, emphasis in secure V2X communications research has converged on the use of Vehicular Public Key Infrastructures (VPKIs) for credential management and privacy-friendly authentication services. However, despite the security and privacy guarantees offered by such solutions, there are still a number of challenges to be conquered. By reflecting on state-of-the-art PKI-based architectures, in this paper, we identify their limitations focusing on scalability, interoperability, pseudonym reusage policies and revocation mechanisms. We argue that in their current form such mechanisms cannot capture the strict security, privacy, and trust requirements of all involved stakeholders. Motivated by these weaknesses, we then proceed on proposing the use of trusted computing technologies as an enabler for more decentralized approaches where trust is shifted from the back-end infrastructure to the edge. We debate on the advantages offered and underline the specifis of such a novel approach based on the use of advanced cryptographic primitives, using Direct Anonymous Attestation (DAA) as a concrete example. Our goal is to enhance run-time security, privacy and trustworthiness of edge devices with a scalable and decentralized solution eliminating the need for federated infrastructure trust. Based on our findings, we posit open issues and challenges, and discuss possible ways to address them.

Original languageEnglish
Title of host publicationProceedings of the 14th International Conference on Availability, Reliability and Security, ARES 2019
Number of pages8
PublisherAssociation for Computing Machinery
Publication date26 Aug 2019
Article number3340523
ISBN (Electronic)9781450371643
DOIs
Publication statusPublished - 26 Aug 2019
Event14th International Conference on Availability, Reliability and Security, ARES 2019 - Canterbury, United Kingdom
Duration: 26 Aug 201929 Aug 2019

Conference

Conference14th International Conference on Availability, Reliability and Security, ARES 2019
Country/TerritoryUnited Kingdom
CityCanterbury
Period26/08/201929/08/2019
SeriesACM International Conference Proceeding Series

Keywords

  • Direct Anonymous Attestation
  • Location Privacy
  • Public Key Infrastructure
  • Trusted Computing
  • V2X Communications

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