Nonmonotonic Trust Management for P2P Applications

M.R. Czenko, Ha Tran, Jeroen Doumen, Sandro Etalle, Pieter Hartel, Jeremy den Hartog

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    Community decisions about access control in virtual communities are non-monotonic in nature. This means that they cannot be expressed in current, monotonic trust management languages such as the family of Role Based Trust Management languages (RT). To solve this problem we propose RTo, which adds a restricted form of negation to the standard RT language, thus admitting a controlled form of non-monotonicity. The semantics of RTo is discussed and presented in terms of the well-founded semantics for Logic Programs. Finally we discuss how chain discovery can be accomplished for RTo.
    Original languageEnglish
    Place of PublicationEnschede
    PublisherCentre for Telematics and Information Technology (CTIT)
    Number of pages12
    Publication statusPublished - Jun 2005

    Publication series

    NameCTIT Technical Report Series
    PublisherUniversity of Twente, Centre for Telematics and Information Technology (CTIT)
    ISSN (Print)1381-3625


    • SCS-Cybersecurity
    • EC Grant Agreement nr.: FP6/507894
    • Role based trust management
    • Chain discovery
    • Peer to Peer (P2P)
    • Virtual ommunities
    • Non-monotonic policies
    • Distributed Trust Management (DTM)


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    • Nonmonotonic Trust Management for P2P Applications

      Czenko, M., Tran, H., Doumen, J. M., Etalle, S., Hartel, P. & den Hartog, J., Sept 2005, 1st Int. Workshop on Security and Trust Management (STM). Mauw, S., Issarny, V. & Cremers, C. (eds.). Elsevier, p. 113-130 18 p. (Electronic Notes in Theoretical Computer Science; vol. 157, no. 3).

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

      Open Access
      21 Citations (Scopus)
      25 Downloads (Pure)

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