Multi-level delegations with trust management in access control systems

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Li, Min, Sun, Xiaoxun, Wang, Hua and Zhang, Yanchun (2012) Multi-level delegations with trust management in access control systems. Journal of Intelligent Information Systems, 39 (3). pp. 611-626. ISSN 0925-9902 (print), 1573-7675 (online)


Delegation is a mechanism that allows one agent to act on another’s privilege. It is important that the privileges should be delegated to a person who is trustworthy. In this paper, we propose a multi-level delegation model with trust management in access control systems.We organize the delegation tasks into three levels, Low, Medium, and High, according to the sensitivity of the information contained in the delegation tasks. It motivates us that the more sensitive the delegated task is, the more trustworthy the delegatee should be. In order to assess how trustworthy a delegatee is, we devise trust evaluation techniques to describe a delegatee’s trust history and also predict the future trend of trust. In our proposed delegation model, a delegatee with a higher trust level could be assigned with a higher level delegation task. Extensive experiments show that our proposed multi-level delegation model is effective in accurately predicting trust and avoiding sensitive information disclosure.

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Item type Article
DOI 10.1007/s10844-012-0205-8
Official URL
Subjects Historical > FOR Classification > 0803 Computer Software
Historical > FOR Classification > 0806 Information Systems
Historical > SEO Classification > 8902 Computer Software and Services
Historical > Faculty/School/Research Centre/Department > School of Engineering and Science
Keywords ResPubID25480; access control, database management, trust evaluation, intelligent information systems, computer security
Citations in Scopus 10 - View on Scopus
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