Comparing Logic-based and XML-based Rights Expression Languages

C.N. Chong, Sandro Etalle, Pieter H. Hartel

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Several rights expression languages (RELs) have been proposed to describe licenses governing the terms and conditions of content access. In this field XrML and ODRL cover a prominent role. Both languages are powerful yet complex. In this paper we propose a way of analysing RELs and we apply it to ODRL, XrML and to LicenseScript, a REL we have proposed in [3]. In addition, we test these languages against a number of example scenarios. These examples bring new insights, and shed new light on some of the limits of XrML and ODRL.
Original languageUndefined
Place of PublicationEnschede
PublisherCentre for Telematics and Information Technology (CTIT)
Number of pages40
Publication statusPublished - Aug 2003

Publication series

NameCTIT technical reports series
PublisherUniversity of Twente, Centre for Telematics and Information Technology (CTIT)


  • SCS-Cybersecurity
  • IR-56981
  • EWI-5820

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