Distributed credential chain discovery in trust-management with parameterized roles

Authors:
Xian Zhu;Shaobin Wang;Fan Hong;Junguo Liao
Affiliations:
College of Computer, Huazhong University of Science & Technology, Wuhan, China;College of Computer, Huazhong University of Science & Technology, Wuhan, China;College of Computer, Huazhong University of Science & Technology, Wuhan, China;College of Computer, Huazhong University of Science & Technology, Wuhan, China
Venue:
CANS'05 Proceedings of the 4th international conference on Cryptology and Network Security
Year:
2005

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Abstract

Trust-management subjects face the problem of discovering credential chain. In this paper, the distributed credential chain discovery algorithms in trust-management with parameterized roles are proposed. The algorithms extend the RT0’s and are goal-oriented also. Based on the concept of parameterized roles in RT1, they search the credential graph via the constant matching and variable solving mechanisms. The algorithms can perform chain discovery in most trust-management systems and can support the protection of access control policies during automated trust negotiation. Soundness and completeness of the algorithms are given.