PKI Interoperability: Still an Issue? A Solution in the X.509 Realm

  • Ahmad Samer Wazan
  • Romain Laborde
  • François Barrere
  • Abdelmalek Benzekri
  • David W. Chadwick
Conference paper
Part of the IFIP Advances in Information and Communication Technology book series (IFIPAICT, volume 406)


There exist many obstacles that slow the global adoption of public key infrastructure (PKI) technology. The PKI interoperability problem, being poorly understood, is one of the most confusing. In this paper, we clarify the PKI interoperability issue by exploring both the juridical and technical domains. We demonstrate the origin of the PKI interoperability problem by determining its root causes, the latter being legal, organizational and technical differences between countries, which mean that relying parties have no one to rely on. We explain how difficult it is to harmonize them. Finally, we propose to handle the interoperability problem from the trust management point of view, by introducing the role of a trust broker which is in charge of helping relying parties make informed decisions about X.509 certificates.


PKI X.509 Trust Interoperability 


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Copyright information

© IFIP International Federation for Information Processing 2013

Authors and Affiliations

  • Ahmad Samer Wazan
    • 1
  • Romain Laborde
    • 2
  • François Barrere
    • 2
  • Abdelmalek Benzekri
    • 2
  • David W. Chadwick
    • 3
  1. 1.CNRS UMR 5157 SAMOVARInstitut Mines-Telecom/Telecom SudParisEvryFrance
  2. 2.IRIT UMR 5505Paul Sabatier UniversityToulouseFrance
  3. 3.Computing LaboratoryUniversity of KentCanterburyUK

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