NDLI: Modelling Workflow Executions under Role-Based Authorisation Control

Content Provider	IEEE Xplore Digital Library
Author	Ligang He Kewei Duan Xueguang Chen Deqing Zou Zongfen Han Fadavinia, A. Jarvis, S.A.
Copyright Year	2011
Abstract	Workflows are often used to represent enterprise-type activities, and authorisation control is an important security consideration in enterprise-level applications. Role-Based Access Control (RBAC) is a popular authorisation control scheme under which users are assigned to certain roles, and the roles are associated with permissions. This paper presents a novel mechanism for modelling workflow execution in cluster-based resource pools under Role-Based Access Control (RBAC) schemes. Our modelling approach uses Coloured Timed Petri-Nets, and various authorisation constraints are modelled, including role constraints, temporal constraints, cardinality constraints, Binding of Duty and Separation of Duty constraints, etc. The interactions between workflow authorisation and workflow execution are also captured in the model. In this paper, the modelling mechanism is developed in such a fashion that the construction of the authorisation model for a workflow can be automated. This feature is very helpful in modelling a large collection of authorisation policies or complex workflows. A Petri-net simulation tool, the CPN-Tool, is utilised to implement the developed modelling mechanism and simulate the constructed model. Both system-level performance (e.g., utilisation of resource pools) and application-level performance (e.g., workflow response time) can be obtained from model simulations. This work can be used to plan system capacity and investigate the impact of authorization policies on system and application performance.
Starting Page	200
Ending Page	208
File Size	1862295
Page Count	9
File Format	PDF
ISBN	9781457708633
DOI	10.1109/SCC.2011.56
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-07-04
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Authorization Image color analysis Color Board of Directors Data models Analytical models Availability RBAC Modelling Authorisation Workflow
Content Type	Text
Resource Type	Article

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