Secure role-based workflow models
Das'01 Proceedings of the fifteenth annual working conference on Database and application security
A reference monitor for workflow systems with constrained task execution
Proceedings of the tenth ACM symposium on Access control models and technologies
Supporting conditional delegation in secure workflow management systems
Proceedings of the tenth ACM symposium on Access control models and technologies
Delegation in role-based access control
International Journal of Information Security
On delegation and workflow execution models
Proceedings of the 2008 ACM symposium on Applied computing
Satisfiability and resiliency in workflow systems
ESORICS'07 Proceedings of the 12th European conference on Research in Computer Security
Parameterized Complexity
Modelling task delegation for human-centric eGovernment workflows
Proceedings of the 10th Annual International Conference on Digital Government Research: Social Networks: Making Connections between Citizens, Data and Government
Law-aware access control for international financial environments
Proceedings of the Eighth ACM International Workshop on Data Engineering for Wireless and Mobile Access
Towards Trustworthy Delegation in Role-Based Access Control Model
ISC '09 Proceedings of the 12th International Conference on Information Security
Modeling process-related RBAC models with extended UML activity models
Information and Software Technology
Process compliance analysis based on behavioural profiles
Information Systems
On the refactoring of activity labels in business process models
Information Systems
Optimal workflow-aware authorizations
Proceedings of the 17th ACM symposium on Access Control Models and Technologies
Generic support for RBAC break-glass policies in process-aware information systems
Proceedings of the 28th Annual ACM Symposium on Applied Computing
Detection of naming convention violations in process models for different languages
Decision Support Systems
Information and Software Technology
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Supporting delegation mechanisms in workflow systems is receiving increasing interest from the research community. An important requirement of a constrained workflow is to guarantee the satisfiability of the workflow, which requires that some set of authorized users can complete a workflow. Typically, any mechanism that is used to establish the satisfiability of a workflow is based on the workflow specification and the user authorization information. The effect of a successful user delegation request is to change the user authorization information, thereby affecting the satisfiability of the workflow. Existing work on delegation in workflows does not consider the satisfiability of the workflow. In this paper, we address the satisfiability problem of workflows, while supporting user delegation mechanisms, in the context of three different workflow execution models. We consider delegation of concrete tasks, abstract tasks and roles. We present algorithms for evaluating various delegation requests in each workflow execution model.