Policies for Distributed Systems and Networks, IEEE International Workshop on
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Abstract

We have an existing framework for updating privileges and creating management structures by means of authority certificates. These are used both to create access-level permissions and to delegate authority to other agents. Here we extend the framework to support a richer set of evocation schemes. The discussion of evocation follows an existing classification in the literature based on three separate dimensions: resilience, propagation, and dominance. The first does not apply to this framework. The second is specified straightforwardly. The third can be encoded but raises a number of further questions for future investigation.
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