Itinerary-Based Access Control for Mobile Tasks in Scientific Workflows

Current scientific workflow models require datasets to be transferred from their source to the hosts where they can be processed. This seriously impedes data-intensive applications. In order to address this limitation, we propose a notion of mobile tasks that can move from their home hosts towards datasets and perform computation on the dataset side. Since a mobile task might migrate across various administrative domains and get executed at multiple hosts, it is critically important to ensure the security of a mobile- task-based workflow system. In this paper, we propose an itinerary-based access control model to ensure the secure migration of mobile tasks.