Role-Based Access Control Models
Computer
The specification and enforcement of authorization constraints in workflow management systems
ACM Transactions on Information and System Security (TISSEC) - Special issue on role-based access control
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
ESORICS'06 Proceedings of the 11th European conference on Research in Computer Security
Delegation and satisfiability in workflow systems
Proceedings of the 13th ACM symposium on Access control models and technologies
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Workflow systems have long been of interest to computer science researchers due to their practical relevance. Supporting delegation mechanisms in workflow systems is receiving increasing research interest. In this paper, we conduct a comprehensive study of user delegation operations in computerized workflow systems. In a workflow system, the semantics of a delegation operation are largely based on three factors: the underlying workflow execution model, task type and delegation type. We describe three different workflow execution models and examine the effect of various delegation operations in each workflow execution model. We then extend our workflow execution models to examine the effect of various delegation operations in different role-based workflow execution models.