On the homonymous role in role-based discretionary access control

Authors:
Kai Ouyang;Xiaowen Chu;Yixin Jiang;Hsiao-Hwa Chen;Jiangchuan Liu
Affiliations:
School of Computer Science, Wuhan Univ. of Sci. & Tech., China;Department of Computer Science, Hong Kong Baptist Univ., Hong Kong;Department of Computer, Tsinghua University, Beijing, China;Institute of Communication Engineering, National Sun Yat-Sen Univ., Taiwan;School of Computing Science, Simon Fraser University, BC, Canada
Venue:
ATC'07 Proceedings of the 4th international conference on Autonomic and Trusted Computing
Year:
2007

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Abstract

Secure model is a core aspect in trusted information system and a key research field of trusted computing. Based on the extensive research of the Role Based Access Control (RBAC) model and the security operating system standards, we put forward the concept of homonymous role, which extends the control categories of the role in RBAC, balances the control granularity and the storage space requirement, and carries the detailed access control into execution. Based on the homonymous role, we also facilitate the homonymous control domain capability in the Discretionary Access Control (DAC) system. Finally, we design and implement our homonymous control domain on FreeBSD to enhance the flexibility of the access control.