Vehicular communication (V2X) technologies are expected to become common in the future, providing better efficiency and safety in transportation. This envisioned large-scale deployment, however, critically depends on addressing some issues. In special, to prevent abuse by drivers, messages exchanged among authorized vehicles must be authenticated. This implies the need of a Vehicular Public Key Infrastructure (VPKI). Unlike traditional PKIs, though, VPKIs are also expected to preserve the privacy of honest drivers, preventing their vehicles from being easily identified or tracked. One promising VPKI solution, which copes with such requirements and is among the main candidates for standardization in the United States, is the Security Credential Management System (SCMS). In this paper, aiming to enhance and address shortcomings identified in SCMS, we provide two main contributions. First, we describe and fix two birthday attacks against SCMS’s certificate revocation process, thus improving the system’s long-term privacy. Second, we propose a method that simplifies SCMS’s architecture, removing the need for Linkage Authorities (LAs); this approach cuts down deployment costs while reducing the system’s attack surface, in particular against some troublesome forms of replay attacks that are hereby unveiled.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Privacy-Preserving Certificate Linkage/Revocation in VANETs Without Linkage Authorities




    Publication date :

    2021-06-01


    Size :

    1392347 byte




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English



    Privacy Protection Against Certificate Authorities

    Delgrossi, Luca / Zhang, Tao | Wiley | 2012


    Toward Revocation Data Handling Efficiency in VANETs

    Ganan, Carlos / Munoz, Jose L. / Esparza, Oscar et al. | Tema Archive | 2012



    Toward Revocation Data Handling Efficiency in VANETs

    Ganan, C. / Munoz, J.L. / Esparza, O. et al. | British Library Conference Proceedings | 2012


    Toward Revocation Data Handling Efficiency in VANETs

    Gañán, Carlos / Muñoz, Jose L. / Esparza, Oscar et al. | Springer Verlag | 2012