A Group-based Authorization Model for Cooperative Systems

Klaas Sikkel

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    Requirements for access control in CSCW systems have often been stated, but groupware in use today does not meet most of these requirements. There are practical reasons for this, but one of the problems is the inherent complexity of sophisticated access control models. We propose a general authorization model that emphasizes conceptual simplicity and show that several issues - in particular negative access rights and delegation of rights - can be solved elegantly in this model.
    Original languageEnglish
    Title of host publicationProceedings of the Fifth European Conference on Computer Supported Cooperative Work
    EditorsJohn A. Hughes, Wolfgang Prinz, Tom Rodden, Kjeld Schmidt
    Place of PublicationDordrecht
    Number of pages16
    ISBN (Electronic)978-94-015-7372-6
    ISBN (Print)978-94-015-7374-0
    Publication statusPublished - Sept 1997
    Event5th European Conference on Computer Supported Cooperative Work, ECSCW 1997 - Lancaster, United Kingdom
    Duration: 1 Sept 19971 Sept 1997
    Conference number: 5


    Conference5th European Conference on Computer Supported Cooperative Work, ECSCW 1997
    Abbreviated titleECSCW
    Country/TerritoryUnited Kingdom


    • SCS-Services
    • Access control
    • User group
    • Cooperative work
    • Versus versus versus versus versus
    • Access control model

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