VPKIaaS: A Highly-Available and Dynamically-Scalable Vehicular Public-Key Infrastructure
This work addresses scalability and availability issues in secure vehicular communication systems, which is incremental as it enhances an existing VPKI system.
The authors tackled the challenge of scaling and ensuring high availability for Vehicular Public-Key Infrastructure (VPKI) in large-scale multi-domain vehicular communication systems, resulting in a cost-effective implementation on Google Cloud Platform that efficiently issues pseudonyms.
The central building block of secure and privacy-preserving Vehicular Communication (VC) systems is a Vehicular Public-Key Infrastructure (VPKI), which provides vehicles with multiple anonymized credentials, termed pseudonyms. These pseudonyms are used to ensure message authenticity and integrity while preserving vehicle (and thus passenger) privacy. In the light of emerging large-scale multi-domain VC environments, the efficiency of the VPKI and, more broadly, its scalability are paramount. In this extended abstract, we leverage the state-of-the-art VPKI system and enhance its functionality towards a highly-available and dynamically-scalable design, this ensures that the system remains operational in the presence of benign failures or any resource depletion attack, and that it dynamically scales out, or possibly scales in, according to the requests' arrival rate. Our full-blown implementation on the Google Cloud Platform shows that deploying a VPKI for a large-scale scenario can be cost-effective, while efficiently issuing pseudonyms for the requesters.