Context-Aware Identity Delegation

Naveed Ahmed, Christian D. Jensen

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    Abstract

    In emerging ubiquitous computing, related nomadic users often perform similar tasks and share the same computing infrastructure.This means that security of the shared resources is of prime importance.Frequent delegation of tasks among users must be anticipated as most nomadic environments are hectic and very dynamic. A delegation mechanism with a slightly complicated user interface will not only reduce the productivity but also provide nomadic users with a strong motivation to circumvent the mechanism itself. Delegation in access control domain is not practical for the most of nomadic users due to its complicated and complex structure. Identity delegation at authentication level provides improved usability, which reduces the risk of circumventing the delegation mechanism; at the same time, however, identity delegation violates the principle of least privileges. We use contextual information of a delegatee to mitigate this violation, which helps to achieve a higher level of practical security in nomadic environments.
    Original languageEnglish
    Title of host publicationEuro CAT 2009
    VolumeCEUR-WS volume (CEUR-WS.org - ISSN 1613-0073)
    Publication date2009
    Publication statusPublished - 2009
    EventEuro CAT Workshop 2009 - Pisa, Itlay
    Duration: 1 Jan 2009 → …

    Conference

    ConferenceEuro CAT Workshop 2009
    CityPisa, Itlay
    Period01/01/2009 → …

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