Volume 4 Number 9 (Sep. 2009)
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JCP 2009 Vol.4(9): 862-872 ISSN: 1796-203X
doi: 10.4304/jcp.4.9.862-872

Trust-Based Constraint-Secure Interoperation for Dynamic Mediator-Free Collaboration

Lingli Deng1, 2, Ziyao Xu1, 2, Yeping He2
1Graduate University of Chinese Academy of Sciences, Beijing, China
2Institute of Software, Chinese Academy of Sciences, Beijing, China


Abstract—By collaboration, domains share resources effectively. To maintain security properties of individual domains during collaboration is a key issue. When domains employing heterogeneous RBAC policies collaborate via crossdomain role-role mappings, their locally-defined separation of duty constraints face the risk of breaching. We present the requirements for constraint-secure interoperation, prohibiting implicit authorizations that break constraints from other member domains. We propose a trust-based framework to implement constraint-secure interoperation with differential trust relations between member pairs in open collaborative scenarios. The framework introduces cross-domain migration and remote assurance of constraints to maximize interoperability between mutually trusted domains, ensures separation of constraint conflicts to minimize security risk between distrusted domains. We provide algorithms of a fully distributed implementation, security proofs and demonstrative usage cases for the proposed solution.

Index Terms—Secure Collaboration, RBAC, Separation of Duty, Statically Mutual Exclusive Roles

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Cite: Lingli Deng, Ziyao Xu, Yeping He, "Trust-Based Constraint-Secure Interoperation for Dynamic Mediator-Free Collaboration," Journal of Computers vol. 4, no. 9, pp. 862-872, 2009.

General Information

ISSN: 1796-203X
Abbreviated Title: J.Comput.
Frequency: Monthly
Editor-in-Chief: Prof. Liansheng Tan
Executive Editor: Ms. Nina Lee
Abstracting/ Indexing: DBLP, EBSCO,  ProQuest, INSPEC, ULRICH's Periodicals Directory, WorldCat, CNKI,etc
E-mail: jcp@iap.org
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