中文

Journal of Applied Sciences ›› 2004, Vol. 22 ›› Issue (3): 365-369.

• Articles • Previous Articles     Next Articles

A Research on Dynamic Access Control Technology in the Distributed Manufacturing System

HA Jin-bing1, HU Wen-bin2, YAN Yang-guang3   

  1. 1. Collge of Economic Management, Nanjing University of Science and Technology, Nanjing 210094, China;
    2. CIMS Institute, Nanjing University of Science and Technology, Nanjing 210094, China;
    3. College of Automation Enginering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China
  • Received:2003-04-28 Revised:2003-11-12 Online:2004-09-30 Published:2004-09-30

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Abstract: The traditional access control mechanism in a distributed cooperative work system is static and lacks flexibility. So a new access control method called dynamic access control is introduced here. It combines the workflow management with access control matrix to improve the flexibility and efficiency. How access rights can be derived from a Petri net workflow is discussed in this paper. Access rights are granted according to the state of the workflow. The concept of workflow is defined by Petri nets which offer a solid mathematical foundation. Finally the method is implemented in a collaborative project discussion process of a cooperative work system called eCWS.

Key words: workflow, Petri net, cooperative work, dynamic access control

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