Vehicular communication systems increase traffic efficiency and safety by allowing vehicles to share safety-related information and location-based services. Pseudonym schemes are the standard solutions providing driver/vehicle anonymity, whilst enforcing vehicle accountability in case of liability issues. State-of-the-art PKI-based pseudonym schemes present scalability issues, notably due to the centralized architecture of certificate-based solutions. The first Direct Anonymous Attestation (DAA)-based pseudonym scheme was introduced at VNC 2017, providing a decentralized approach to the pseudonym generation and update phases. The DAA-based construction leverages the properties of trusted computing, allowing vehicles to autonomously generate their own pseudonyms by using a (resource constrained) Trusted Hardware Module or Component (TC). This proposition however requires the TC to delegate part of the (heavy) pseudonym generation computations to the (more powerful) vehicle's On-Board Unit (OBU), introducing security and privacy issues in case the OBU becomes compromised. In this paper, we introduce a novel pseudonym scheme based on a variant of DAA, namely a pre-DAA-based pseudonym scheme. All secure computations in the pre-DAA pseudonym lifecycle are executed by the secure element, thus creating a secure enclave for pseudonym generation, update, and revocation. We instantiate vehicle-to-everything (V2X) with our pre-DAA solution, thus ensuring user anonymity and user-controlled traceability within the vehicular network. In addition, the pre-DAA-based construction transfers accountability from the vehicle to the user, thus complying with the many-to-many driver/vehicle relation. We demonstrate the efficiency of our solution with a prototype implementation on a standard Javacard (acting as a TC), showing that messages can be anonymously signed and verified in less than 50 ms.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Practical Anonymous Attestation-based Pseudonym Schemes for Vehicular Networks


    Contributors:


    Publication date :

    2019-12-01


    Size :

    310781 byte





    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English



    Optimizing pseudonym updation in vehicular ad-hoc networks

    Chaurasia, Brijesh Kumar / Verma, Shekhar / Tomar, G.S. et al. | Tema Archive | 2009


    Pseudonym-On-Demand: A New Pseudonym Refill Strategy for Vehicular Communications

    Ma, Z. / Kargl, F. / Weber, M. et al. | British Library Conference Proceedings | 2008


    Pseudonym Certificate Validations under Heavy Vehicular Traffic Loads

    Jha, Santos / Yavvari, Chaitanya / Wijesekera, Duminda | IEEE | 2018


    On the potential of PUF for pseudonym generation in vehicular networks

    Petit, Jonathan / Bosch, Christoph / Feiri, Michael et al. | IEEE | 2012


    PRIVANET: An Efficient Pseudonym Changing and Management Framework for Vehicular Ad-Hoc Networks

    Boualouache, Abdelwahab / Senouci, Sidi-Mohammed / Moussaoui, Samira | IEEE | 2020