This thesis concerns itself with the development of a Trust Based Access Control (TBAC) solution, which aims at addressing fundamental trust issues in dynamic federated environments. It presents a concept for the conception and the analysis of a trust process model as well as a framework for building a Circle of Trust (CoT) among organizations in order to support secure and trustful collaborations between them. Firstly, the trust process model specifies the evolution chain of a trust relationship through different phases, including, Initialization, Management, Validation, Evolution and Auditing. Secondly, the TBAC Framework realizes the different phases of the process model, and consequently, enables the specification of a common set of logical methods and procedures for reasoning about trust from different aspects and dimensions. Detailed evaluation of the trust computation algorithms as well as the applicability of this approach is demonstrated by means of the Virtual University of Bavaria (VHB) scenario.
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This thesis concerns itself with the development of a Trust Based Access Control (TBAC) solution, which aims at addressing fundamental trust issues in dynamic federated environments. It presents a concept for the conception and the analysis of a trust process model as well as a framework for building a Circle of Trust (CoT) among organizations in order to support secure and trustful collaborations between them. Firstly, the trust process model specifies the evolution chain of a trust relationshi...
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