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Efficient, Scalable, and Resilient Vehicle-Centric Certificate Revocation List Distribution in VANETs
KTH, School of Electrical Engineering and Computer Science (EECS), Computer Science, Network and Systems Engineering.ORCID iD: 0000-0003-1778-1416
KTH, School of Electrical Engineering and Computer Science (EECS), Computer Science, Network and Systems Engineering.ORCID iD: 0000-0002-3267-5374
2018 (English)In: WISEC'18: PROCEEDINGS OF THE 11TH ACM CONFERENCE ON SECURITY & PRIVACY IN WIRELESS AND MOBILE NETWORKS, Association for Computing Machinery (ACM) , 2018, p. 172-183Conference paper, Published paper (Refereed)
Abstract [en]

In spite of progress in securing Vehicular Communication (VC) systems, there is no consensus on how to distribute Certificate Revocation Lists (CRLs). The main challenges lie exactly in (i) crafting an efficient and timely distribution of CRLs for numerous anonymous credentials, pseudonyms, (ii) maintaining strong privacy for vehicles prior to revocation events, even with honest-but-curious system entities, (iii) and catering to computation and communication constraints of on-board units with intermittent connectivity to the infrastructure. Relying on peers to distribute the CRLs is a double-edged sword: abusive peers could "pollute" the process, thus degrading the timely CRLs distribution. In this paper, we propose a vehicle-centric solution that addresses all these challenges and thus closes a gap in the literature. Our scheme radically reduces CRL distribution overhead: each vehicle receives CRLs corresponding only to its region of operation and its actual trip duration. Moreover, a "fingerprint" of CRL 'pieces' is attached to a subset of (verifiable) pseudonyms for fast CRL 'piece' validation (while mitigating resource depletion attacks abusing the CRL distribution). Our experimental evaluation shows that our scheme is efficient, scalable, dependable, and practical: with no more than 25 KB/s of traffic load, the latest CRL can be delivered to 95% of the vehicles in a region (50x50 KM) within 15s, i.e., more than 40 times faster than the state-of-the-art. Overall, our scheme is a comprehensive solution that complements standards and can catalyze the deployment of secure and privacy-protecting VC systems.

Place, publisher, year, edition, pages
Association for Computing Machinery (ACM) , 2018. p. 172-183
Keywords [en]
Vehicular Communications, VPKI, Revocation, CRL Distribution
National Category
Communication Systems
Identifiers
URN: urn:nbn:se:kth:diva-303845DOI: 10.1145/3212480.3212481ISI: 000456097500017Scopus ID: 2-s2.0-85050915720ISBN: 978-1-4503-5731-9 (print)OAI: oai:DiVA.org:kth-303845DiVA, id: diva2:1605493
Conference
11th ACM Conference on Security and Privacy in Wireless and Mobile Networks (WiSec), JUN 18-20, 2018, Stockholm, SWEDEN
Note

QC 20211024

Not duplicate with DiVA 1231581

Available from: 2021-10-24 Created: 2021-10-24 Last updated: 2022-06-25Bibliographically approved

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Khodaei, MohammadPapadimitratos, Panagiotis

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