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Table of contents
Chapter 1 Introduction
1.1 Background and Motivation
1.2 Thesis Objectives
1.3 Thesis Structure
Chapter 2 Context and Problematic
2.1 Introduction
2.2 Context: Organisational Management in Workow Systems
2.2.1 Resource management in the workow life cycle
2.2.2 Organisational resources analysis
2.2.3 Denition of assignment and synchronisation policies
2.2.4 Resource integration
2.2.5 Organisational maintenance at runtime
2.2.6 Summary
2.3 Problem Statement : How to ensure a secure task delegation in workow systems ?
2.3.1 Motivating example : e-Government workow scenario
2.3.2 Problem statements
2.4 Principles, Approach and Thesis Contributions
2.4.1 Principles
2.4.2 Our approach
2.4.3 Contributions
2.4.4 Published results
2.5 Conclusion
Chapter 3 State of the Art
3.1 Introduction
3.2 Business Processes and Workows
3.2.1 Workow management systems
3.2.2 Organisational model in WfMS
3.2.3 Business process management vs. Work ows
3.2.4 Business process modelling
3.2.5 Summary
3.3 An Overview of Security Concepts
3.3.1 The ve pillars of information security
3.3.2 Access control approaches for security policies
3.3.3 XACML : a policy language
3.3.4 Summary
3.4 Level of Access Control within Workows
3.4.1 Organisational goals
3.4.2 Secure workow approaches
3.4.3 Summary
3.5 Analysis of Delegation in Secure Workows
3.5.1 Delegation in workows
3.5.2 Delegation in access control models
3.5.3 Summary
3.6 Conclusion
Chapter 4 Modelling Task Delegation in Work ows
4.1 Introduction
4.2 Motivation Factors for Delegation
4.2.1 Organisational
4.2.2 Business process
4.2.3 Resource
4.2.4 Link with the case study
4.2.5 Summary
4.3 Organisational Flexibility in Workows
4.3.1 Flexibility constraints
4.3.2 Organisational exibility in practice
4.3.3 Requirements for organisational roles
4.3.4 Summary
4.4 An Extended Analysis of Delegation in Business Processes
4.4.1 A workow model
4.4.2 Basic task delegation model
4.4.3 Securing task delegation within a workow
4.4.4 Summary
4.5 Modelling Task Delegation for Human-centric Workows
4.5.1 Delegation kind
4.5.2 Delegation of privileges
4.5.3 Task delegation model
4.5.4 Negotiation in user-to-user delegation
4.5.5 Delegation protocol supporting negotiation
4.5.6 Summary
4.6 Access Control Over Task Delegation in Workows
4.6.1 Task execution model
4.6.2 Task-oriented access control model
4.6.3 Access control over task delegation using TAC
4.6.4 Revocation
4.6.5 Summary
4.7 Conclusion
Chapter 5 Securing Task Delegation in Access Control Systems
5.1 Introduction
5.2 Modelling Task Delegation Using Access Control Systems
5.2.1 Context for dynamic delegation policies
5.2.2 Access control framework
5.2.3 General control process
5.2.4 Delegation protocols
5.2.5 Access control enforcement
5.2.6 Summary
5.3 Event-based Task Delegation Policies
5.3.1 Problem statement (part I)
5.3.2 Security requirement for delegation
5.3.3 A secure framework for task delegation
5.3.4 Summary
5.4 Integrating Event-based Delegation Policies
5.4.1 Problem statement (part II)
5.4.2 Monitoring and securing task delegation
5.4.3 Modelling task delegation in event calculus
5.4.4 Building policies for delegation
5.4.5 Modelling delegation policies in event calculus
5.4.6 Delegation automation
5.4.7 Summary
5.5 Conclusion
Chapter 6 Deployment Environment
6.1 Introduction
6.2 The Development Environment
6.2.1 Project overview
6.2.2 Collaboration infrastructure
6.3 Delegation for Human-centric Workows
6.3.1 Administrative communication layer
6.3.2 Collaborative workow runtime
6.3.3 ACL plugin supporting delegation
6.3.4 Email-centric task delegation tool
6.4 Delegation Policies Enforcement
6.4.1 A secure delegation protocol
6.4.2 Authentication management component
6.4.3 Authorisation decision component
6.4.4 Deployment and evaluation
6.5 Conclusion
Chapter 7 Conclusion and Perspectives
7.1 Thesis Summary and Contributions
7.2 Limits and Perspectives
Appendix A Discrete Event Calculus Reasoner
A.1 Introduction
A.2 Discrete Event Calculus Reasoner Language
A.2.1 Sorts
A.2.2 Formulas
A.2.3 Options
Appendix B Commonsense Reasoning for Task Delegation
Appendix C List of Acronyms
Bibliography
