Role-based delegation with negative authorization

Wang, Hua and Cao, Jinli and Ross, David (2006) Role-based delegation with negative authorization. In: 8th Asia-Pacific Web Conference (APWeb 2006): Frontiers of WWW Research and Development, 16-18 Jan 2006, Harbin, China.

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[Abstract]: Role-based delegation model (RBDM) based on role-based
access control (RBAC) has proven to be a flexible and useful access control model for information sharing on distributed collaborative environment.
Authorization is an important functionality for RBDM in
distributed environment where a conflicting problem may arise when one user grants permission of a role to a delegated user and another user grants the negative permission to the delegated user.
This paper aims to analyse role-based group delegation features that has not studied before, and to provide an approach for the conflicting problem by adopting negative authorization. We present granting and revocation delegating models first, and then discuss user delegation authorization
and the impact of negative authorization on role hierarchies.

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Item Type: Conference or Workshop Item (Commonwealth Reporting Category E) (Paper)
Refereed: Yes
Item Status: Live Archive
Additional Information: Deposited in accordance with the copyright policy of the publisher. Copyright 2006 Springer. This is the author's version of the work. It is posted here with permission of the publisher for your personal use. No further distribution is permitted. The item is also available in Lecture Notes in Computer Science v. 3841 at
Faculty/School / Institute/Centre: Historic - Faculty of Sciences - Department of Maths and Computing (Up to 30 Jun 2013)
Faculty/School / Institute/Centre: Historic - Faculty of Sciences - Department of Maths and Computing (Up to 30 Jun 2013)
Date Deposited: 11 Oct 2007 00:57
Last Modified: 11 Aug 2021 04:57
Uncontrolled Keywords: role-based delegation; distributed collaboration; authorisation; authorization
Fields of Research (2008): 08 Information and Computing Sciences > 0806 Information Systems > 080609 Information Systems Management
Fields of Research (2020): 46 INFORMATION AND COMPUTING SCIENCES > 4609 Information systems > 460908 Information systems organisation and management
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