Access control for collaborative environments
CSCW '92 Proceedings of the 1992 ACM conference on Computer-supported cooperative work
Role-Based Access Control Models
Computer
Role and task-based access control in the PerDiS groupware platform
RBAC '98 Proceedings of the third ACM workshop on Role-based access control
Injecting RBAC to secure a Web-based workflow system
RBAC '00 Proceedings of the fifth ACM workshop on Role-based access control
Access control mechanisms for inter-organizational workflow
SACMAT '01 Proceedings of the sixth ACM symposium on Access control models and technologies
Authorization and Access Control of Application Data in Workflow Systems
Journal of Intelligent Information Systems - Special issue: A survey of research questions for intelligent information systems in education
Distributed and Parallel Databases
Proceedings of the IFIP TC11 WG11.3 Eleventh International Conference on Database Securty XI: Status and Prospects
An Authorization Model for Workflows
ESORICS '96 Proceedings of the 4th European Symposium on Research in Computer Security: Computer Security
An Architecture for Cross-Organizational Business Processes
WECWIS '00 Proceedings of the Second International Workshop on Advance Issues of E-Commerce and Web-Based Information Systems (WECWIS 2000)
Task-role-based access control model
Information Systems
CA-PLAN, an Inter-Organizational Workflow Model
FTDCS '04 Proceedings of the 10th IEEE International Workshop on Future Trends of Distributed Computing Systems
Workflow View Driven Cross-Organizational Interoperability in a Web Service Environment
Information Technology and Management
Access control in collaborative systems
ACM Computing Surveys (CSUR)
Empowering collaborative commerce with Web services enabled business process management systems
Decision Support Systems
Access control in collaborative commerce
Decision Support Systems
Process-centric engineering web services in a distributed and collaborative environment
Computers and Industrial Engineering - Special issue: Logistics and supply chain management
Science of Computer Programming
A Workflow Engine-Driven SOA-Based Cooperative Computing Paradigm in Grid Environments
International Journal of High Performance Computing Applications
CoopFlow: a framework for inter-organizational workflow cooperation
OTM'05 Proceedings of the 2005 Confederated international conference on On the Move to Meaningful Internet Systems - Volume >Part I
BPM'05 Proceedings of the 3rd international conference on Business Process Management
Activity-oriented access control to ubiquitous hospital information and services
Information Sciences: an International Journal
Buyer/seller collaboration through measurement of beliefs on innovativeness of products
Computers in Industry
A dynamic web service-based trust and reputation scheme for scientific workflows
Proceedings of the 12th International Conference on Information Integration and Web-based Applications & Services
Roles of users in interactive networked collaborative environment
CIT'11 Proceedings of the 5th WSEAS international conference on Communications and information technology
Association-Based Active Access Control models with balanced scalability and flexibility
Computers in Industry
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Collaborative systems enable organizations to communicate, interact and cooperate with each other to achieve their business goals. Access control is an important security mechanism for organizations to protect their resources in collaborative environments. Many access control models and mechanisms have been proposed for collaborative systems. However, under the new collaborative paradigm based on Web services and workflow technologies, some specific access control requirements should be addressed to support the various process collaboration patterns. In this paper, we present a task-activity based access control (TABAC) model for process collaboration environments. In TABAC, business process is composed by activities and dynamic permissions are related to tasks. Task permissions can be dynamically assigned to processes during the interaction of activities. A SOAP based interaction protocol is also proposed to transmit task permissions between processes. Finally, we describe the implementation of TABAC model in workflow management system which conforms to the XACML and WS-BPEL specifications.