Ensuring Trust in Autonomous EFC Systems

In thick autonomous EFC systems, the amount to be paid to the toll charger is in effect determined by the on board equipment (OBE) in the vehicle. Since OBE is not under the control of the toll charger and since there are many ways to tamper with a system that is based on GNSS and GPRS, the question whether the toll charger can trust the toll declaration produced by the OBE is paramount. However, current international standards at this moment do not prescribe specific security architecture for EFC systems. The author presents a solution in terms of a Trusted Element (TE) inside the OBE, which not only stores keys used to sign data, but also stores valuable information like (aggregated values of) distances, durations and counters. The author argues that the TE can be trusted by toll chargers, and that, as a consequence, the OBE does not have to be simply trusted, but can be checked. The author discusses the requirements for such a TE and shows how a toll charger can use the TE to obtain trust in the toll declaration generated by the OBE.

  • Corporate Authors:

    ITS Japan

    Tokyo,   Japan 

    ITS America

    1100 17th Street, NW, 12th Floor
    Washington, DC  United States  20036


    326 Avenue Louis
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  • Authors:
    • Bakker, David
  • Conference:
  • Publication Date: 2010


  • English

Media Info

  • Media Type: Digital/other
  • Features: Figures; Photos;
  • Pagination: 10p
  • Monograph Title: 17th ITS World Congress, Busan, 2010: Proceedings

Subject/Index Terms

Filing Info

  • Accession Number: 01354643
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Sep 13 2011 2:24PM