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    Associate Professor

    Université Henri Poincaré, Nancy

    Task Delegation Based Access Control Models for Workflow Systems

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    E-Government organisations are facilitated and conducted using workflow management systems. Role-based access control (RBAC) is recognised as an efficient access control model for large organisations. The application of RBAC in workflow systems cannot, however, grant permissions to users dynamically while business processes are being executed. We currently observe a move away from predefined strict workflow modelling towards approaches supporting flexibility on the organisational level. One specific approach is that of task delegation. Task delegation is a mechanism that supports organisational flexibility, and ensures delegation of authority in access control systems. In this paper, we propose a Task-oriented Access Control (TAC) model based on RBAC to address these requirements. We aim to reason about task from organisational perspectives and resources perspectives to analyse and specify authorisation constraints. Moreover, we present a fine grained access control protocol to support delegation based on the TAC model.

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    Description

    Title : Task Delegation Based Access Control Models for Workflow Systems
    Author(s) : Khaled Gaaloul, François Charoy
    Abstract : E-Government organisations are facilitated and conducted using workflow management systems. Role-based access control (RBAC) is recognised as an efficient access control model for large organisations. The application of RBAC in workflow systems cannot, however, grant permissions to users dynamically while business processes are being executed. We currently observe a move away from predefined strict workflow modelling towards approaches supporting flexibility on the organisational level. One specific approach is that of task delegation. Task delegation is a mechanism that supports organisational flexibility, and ensures delegation of authority in access control systems. In this paper, we propose a Task-oriented Access Control (TAC) model based on RBAC to address these requirements. We aim to reason about task from organisational perspectives and resources perspectives to analyse and specify authorisation constraints. Moreover, we present a fine grained access control protocol to support delegation based on the TAC model.
    Subject : unspecified
    Area : Other
    Language : English
    Year : 2009

    Affiliations Université Henri Poincaré, Nancy
    Journal : The 9th IFIP Conference on eBusiness eServices and eSociety I3E
    Volume : 2009
    Url : http://hal.archives-ouvertes.fr/inria-00431498/PDF/gaaloul_i3e.pdf
    Doi : 10.1007/978-3-642-04280-5_31

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