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Your search keyword '"Sun, Lili"' showing total 19 results
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19 results on '"Sun, Lili"'

18. Purpose-Based Access Control Policies and Conflicting Analysis.

Author

Wang, Hua, Sun, Lili, and Varadharajan, Vijay

Abstract

This paper proposes a purpose-based framework for supporting privacy preserving access control policies and mechanisms. The mechanism enforces access policy to data containing personally identifiable information. The key component of the framework is purpose involved access control models (PAC) that provide full support for expressing highly complex privacy-related policies, taking into account features like purposes and conditions. A policy refers to an access right that a subject can have on an object, based on attribute predicates, obligation actions, and system conditions. Policy conflicting problems may arise when new access policies are generated. The structure of purpose involved access control policy is studied, and efficient conflict-checking algorithms are developed. Finally a discussion of our work in comparison with other access control and frameworks such as EPAL is presented. [ABSTRACT FROM AUTHOR]

Published
2010
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19. Protecting Disseminative Information in E-Learning.

Author

Sun, Lili, Wang, Hua, and Li, Yan

Abstract

E-Learning organisers prefer to disseminate their message as widely as possible, and in the same time authorised people only can access some disseminative information. It becomes a challenge to protect the digital message from access such as reading and updating which has been disseminated out from the organisations. The paper aims to substantially provide a foundation for developing appropriate security solutions for organizations΄ secure dissemination of digital information. An application-level secure architecture is developed based on the references on both of server-side and client-side. The architecture provides control and tracking capabilities for dissemination and usage of digital information while others provide only tracking capability. The outcomes of this paper can immediately apply to prevent unauthorized dissemination of digital content amongst agents of universities regardless of their intention or possession of the digital information and will contribute to higher security in E-Learning. [ABSTRACT FROM AUTHOR]

Published
2008
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