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- W2133966479 abstract "Workflow management systems provide some of the required technical means to preserve integrity, confidentiality and availability at the control-, data- and task assignment layers of a workflow. We currently observe a move away from predefined strict workflow enforcement approaches towards supporting exceptions which are difficult to foresee when modelling a workflow. One specific approach for exception handling is that of task delegation. The delegation of a task from one principal to another, however, has to be managed and executed in a secure way, in this context implying the presence of a fixed set of delegation events. In this paper, we propose first and foremost, a secure task delegation model within a workflow. The novel part of this model is separating the various aspects of delegation with regards tousers, tasks, events and data, portraying them in terms of a multi-layered state machine. We then define delegation scenarios and analyse additional requirements to support secure task delegation over these layers. Moreover, we detail a delegation protocol with a specific focus on the initial negotiation steps between the involved principals." @default.
- W2133966479 created "2016-06-24" @default.
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- W2133966479 date "2008-08-01" @default.
- W2133966479 modified "2023-09-25" @default.
- W2133966479 title "A Secure Task Delegation Model for Workflows" @default.
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- W2133966479 doi "https://doi.org/10.1109/securware.2008.21" @default.
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