The focus of this paper is on a specification model for defining security and coordination policies for distributed collaboration and workflow systems. This work is motivated by the objective to build distributed collaboration systems from their high level specifications. We identify here unique requirements for secure collaboration, specifically role admission and activation constraints, separation of duties, dynamic access control, and a model for multiuser participation in a role. We present a role-based model for specifying coordination and dynamic security requirements in collaboration systems. It also supports hierarchical structuring of a large collaboration environment using the concept of activities, which define a naming scope and a protection domain to specify security and coordination policies. We have implemented this specification model in XML and used it to construct the runtime environments for distributed collaboration systems using a policy based middleware.
|Title of host publication
|Proceedings - ISADS 2003
|Subtitle of host publication
|6th International Symposium on Autonomous Decentralized Systems
|Institute of Electrical and Electronics Engineers Inc.
|Number of pages
|Published - 2008
|6th International Symposium on Autonomous Decentralized Systems, ISADS 2003 - Pisa, Italy
Duration: Apr 9 2003 → Apr 11 2003
|Proceedings - ISADS 2003: 6th International Symposium on Autonomous Decentralized Systems
|6th International Symposium on Autonomous Decentralized Systems, ISADS 2003
|4/9/03 → 4/11/03
Bibliographical notePublisher Copyright:
© 2003 IEEE.
- Access control
- Collaborative work
- Control systems
- Runtime environment