PUCA: A pseudonym scheme with user-controlled anonymity for vehicular ad-hoc networks (VANET)

David Förster, Frank Kargl, Hans Löhr

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

27 Citations (Scopus)


Envisioned vehicular ad-hoc networks (VANET) standards use pseudonym certificates to provide secure and privacy-friendly message authentication. Revocation of long-term credentials is required to remove participants from the system, e.g. in case of vehicle theft. However, the current approach to revocation puts the users’ privacy at risk if the backend systems are not fully trusted. We propose PUCA – a scheme that provides full anonymity, even against colluding backend providers, until the owner of a vehicle triggers revocation himself. The scheme uses anonymous credentials for authentication with the backend while leaving the communication among vehicles and with road side units unchanged and in compliance with existing standards. With PUCA, we put drivers back in charge of their privacy while still allowing revocation of long-term credentials.
Original languageEnglish
Title of host publication2014 IEEE Vehicular Networking Conference (VNC)
Place of PublicationPiscataway, NJ, USA
Number of pages8
ISBN (Print)978-1-4799-7660-7
Publication statusPublished - Dec 2014
EventIEEE Vehicular Networking Conference, VNC 2014 - Paderborn, Germany
Duration: 3 Dec 20145 Dec 2014

Publication series

NameIEEE Vehicular Networking Conference (VNC)
ISSN (Print)2157-9857
ISSN (Electronic)2157-9865


ConferenceIEEE Vehicular Networking Conference, VNC 2014
Abbreviated titleVNC
Internet address


  • SCS-Cybersecurity
  • EC Grant Agreement nr.: FP7/269994

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