NDLI: Specification and enforcement of separation-of-duty policies in role-base access control

Content Provider	IEEE Xplore Digital Library
Author	Jianfeng Lu Jiaqing Zhou
Copyright Year	2011
Description	Author affiliation: School of Mathematics-Physical & Information Engineering, Zhejiang Normal University, Jinhua, 321004, China (Jianfeng Lu; Jiaqing Zhou)
Abstract	Separation-of-duty (SoD) is widely considered to be a fundamental principle to role based access control (RBAC) models and systems should adhere. In this paper, we formulate and study the fundamental problem of SoD policies in the context of RBAC systems. We give a set-based specification of SoD policies and the safety checking problem for SoD policies in the context of RBAC. We study the problem of determining whether a SoD policy is enforceable, and show that directly enforcing SoD policies in RBAC is intractable (coNP-complete). Moreover, indirectly enforcing SoD policies by using mutually exclusive role constraints is also intractable (NP-hard). Therefore, we reduce the safety checking problem for SoD to SAT4J problem which can be solved using available SAT solvers. The experiments show the validity and effectively of the SAT approach.
Starting Page	2135
Ending Page	2140
File Size	413027
Page Count	6
File Format	PDF
ISBN	9781457715860
e-ISBN	9781457715877
DOI	10.1109/ICCSNT.2011.6182399
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-12-24
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Computers Separation of Duty RBAC SAT4J
Content Type	Text
Resource Type	Article

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
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3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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