2nd International ICST Workshop on Trusted Collaboration

Research Article

Unraveling Decentralized Authorization for Multi-domain Collaborations

  • @INPROCEEDINGS{10.1109/COLCOM.2007.4553806,
        author={Hannah K. Lee},
        title={Unraveling Decentralized Authorization for Multi-domain Collaborations},
        proceedings={2nd International ICST Workshop on Trusted Collaboration},
        keywords={Authorization  Collaboration  Collaborative work  Electronic government  Electronic learning  Hospitals  Legislation  Protection  Security},
  • Hannah K. Lee
    Year: 2008
    Unraveling Decentralized Authorization for Multi-domain Collaborations
    DOI: 10.1109/COLCOM.2007.4553806
Hannah K. Lee1,*
  • 1: Security in Distributed Systems (SVS), University Hamburg, Vogt-Koelln-Str. 30, D-22527 Hamburg, Germany
*Contact email: lee@informatik.uni-hamburg.de


Current authorization solutions take highly case-bycase approaches. First of all, the solutions address particular types of multi-domain collaborations such as Virtual Organization or resource-sharing collaborations. Secondly, they tend to be based on specific technology their subject interactions adopt. We consider this phenomena of having a number of different authorization solutions as a result of taking a mainly bottom-up approach to cater the authorization need of diverse types of mult-domain collaborations currently existing. In this paper, we present an extended analysis of different types of multi-domain collaborations based on various e-Government case studies as well as that of existing authorization solutions. With the converged requirements resulting from those analyses, we take a top-down approach of explicitly highlighting generic and interoperable components for a decentralized authorization scheme. This approach appears to be more suitable to produce a more efficient and elegant authorization solution for the majority of multi-domain collaborations.