Workflow authorisation in mediator-free environments

: WorkFlow Management Systems (WFMS) coordinate and streamline business processes. Acquiring workflow authorisations and managing workflow authorisation constraints is achallengingproblem. CurrentWFMSsassumeacentralisedglobalworkflowauthorisationmodel. In this paper, we propose a distributed workflow authorisation model with no central authorisation manager for a mediator-free environment. We provide an on-demand task discovery protocol that enables domains to discover tasks available in other domains. We formulate the workflow authorisation problem as a constraint satisfaction problem to select access paths that satisfy all the workflow authorisation constraints. We propose the Workflow MinimalAuthorisation Problem (WMAP),whichselectsminimalauthorisationsrequiredtoexecutetheworkflowtasks. Inaddition, we investigate access path overlaps to allow tasks in the same session to share authorisations and we present the Workflow Minimal Authorisation Problem with path Overlaps (WMAPO). Finall...

• Type: Journal
• Year: 2006
• Where: IJSN
• Authors: Mohamed Shehab, Elisa Bertino, Arif Ghafoor
• Keywords: Authorisation, IJSN 2006, Workflow Authorisation, Workflow Authorisation Constraints