NDLI: Conflict Detection and Resolution in Context-Aware Authorization

Content Provider	IEEE Xplore Digital Library
Author	Masoumzadeh, A. Amini, M. Jalili, R.
Copyright Year	2007
Description	Author affiliation: Dept. of Comput. Eng., Sharif Univ. of Technol., Tehran (Masoumzadeh, A.; Amini, M.; Jalili, R.)
Abstract	Pervasive computing environments introduce new requirements in expressiveness and flexibility of access control policies which are almost addressable leveraging contextual information. Although context-awareness augments the expressiveness of policies, it increases the probability of arising conflicts. Generally, context-aware authorizations are defined using some contextual constraints on the involved entities in an access request. Accordingly, principles like "more specific overrides", which are employed to resolve possible conflicts, are required to consider the contextual constraints. In this paper, we formalize the use of context constraints in a typical context-aware multi-authority policy model; each authority is capable of defining an expressive conflict resolution policy leveraging context-based precedence establishment principles. Based on the policy model, we propose a comprehensive graph-based approach to resolve conflicts. The strength of the approach is that conflict detection which requires context-based inference is almost done statically and resolution is left for run-time.
Starting Page	505
Ending Page	511
File Size	155953
Page Count	7
File Format	PDF
ISBN	9780769528472
DOI	10.1109/AINAW.2007.127
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2007-05-21
Publisher Place	Canada
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Authorization Access control Pervasive computing Runtime Employment Information security Distributed computing Mobile computing Context modeling
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
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
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
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

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