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There is a growing need to support secure interaction among autonomous domains/systems for developing distributed applications. As domains operate according to their individual security and access control policies, supporting secure interactions among domains for distributed workflows is a complex task prone to subtle errors that can have serious security implications. In this paper the authors propose a framework for verifying secure composibility of distributed workflows in an autonomous multi-domain environment. The objective of workflow composibility verification is to ensure that all the users or processes executing the designated workflow tasks conform to the security policy specifications of all collaborating domains.
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