SECMACE: Scalable and Robust Identity and Credential Management Infrastructure in Vehicular Communication Systems

Several years of academic and industrial research efforts have converged to a common understanding on fundamental security building blocks for the upcoming vehicular communication (VC) systems. There is a growing consensus toward deploying a special-purpose identity and credential management infrastructure, i.e., a vehicular public-key infrastructure (VPKI), enabling pseudonymous authentication, with standardization efforts toward that direction. In spite of the progress made by standardization bodies (IEEE 1609.2 and ETSI) and harmonization efforts [Car2Car Communication Consortium (C2C-CC)], significant questions remain unanswered toward deploying a VPKI. Deep understanding of the VPKI, a central building block of secure and privacy-preserving VC systems, is still lacking. This paper contributes to the closing of this gap. The authors present SECMACE, a VPKI system, which is compatible with the IEEE 1609.2 and ETSI standards specifications. The authors provide a detailed description of their state-of-the-art VPKI that improves upon existing proposals in terms of security and privacy protection, and efficiency. SECMACE facilitates multi-domain operations in the VC systems and enhances user privacy, notably preventing linking pseudonyms based on timing information and offering increased protection even against honest-but-curious VPKI entities. The authors propose multiple policies for the vehicle–VPKI interactions and two large-scale mobility trace data sets, based on which the authors evaluate the full-blown implementation of SECMACE. With very little attention on the VPKI performance thus far, the results of the authors reveal that modest computing resources can support a large area of vehicles with very few delays and the most promising policy in terms of privacy protection can be supported with moderate overhead.


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  • Accession Number: 01671087
  • Record Type: Publication
  • Files: TLIB, TRIS
  • Created Date: May 3 2018 10:54AM