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Paper Abstract and Keywords
Presentation 2009-12-16 16:35
Redesigning of a role hierarchy for role-based access control
Yoshiharu Asakura (NEC/Univ. of Hyogo), Yukikazu Nakamoto (Univ. of Hyogo) ISEC2009-79
Abstract (in Japanese) (See Japanese page) 
(in English) Role-based access control (RBAC) is widely used as an access control mechanism in various computer systems. A role graph is a model that represents role hierarchies and is suitable for runtime deployment of RBAC in a computer system. In a previous work, we proposed an extended role graph that is suitable for designing role hierarchies. When an administrator wants to redesign a role hierarchy in a computer system, he or she has to redesign it with a role graph and, it is therefore difficult for him/her to redesign this. Here, we prove that a role graph can be transformed into any equivalent extended role graph by using extended equivalent transformation manipulations, which transform an extended role graph while preserving its equivalence. This enables an administrator to redesign a role hierarchy with an extended role graph.
The main contribution of this paper is to explain how a role hierarchy can be easily redesigned.
Keyword (in Japanese) (See Japanese page) 
(in English) Role-based access control / extended role graph / equivalent transformation / / / / /  
Reference Info. IEICE Tech. Rep., vol. 109, no. 337, ISEC2009-79, pp. 57-63, Dec. 2009.
Paper # ISEC2009-79 
Date of Issue 2009-12-09 (ISEC) 
ISSN Print edition: ISSN 0913-5685    Online edition: ISSN 2432-6380
Copyright
and
reproduction		 All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034)
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Conference Information
Committee ISEC  
Conference Date 2009-12-16 - 2009-12-16 
Place (in Japanese) (See Japanese page) 
Place (in English) Kikai-Shinko-Kaikan Bldg. 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To ISEC 
Conference Code 2009-12-ISEC 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Redesigning of a role hierarchy for role-based access control 
Sub Title (in English)  
Keyword(1) Role-based access control  
Keyword(2) extended role graph  
Keyword(3) equivalent transformation  
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1st Author's Name Yoshiharu Asakura  
1st Author's Affiliation NEC Corporation/University of Hyogo (NEC/Univ. of Hyogo)
2nd Author's Name Yukikazu Nakamoto  
2nd Author's Affiliation University of Hyogo (Univ. of Hyogo)
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Speaker Author-1 
Date Time 2009-12-16 16:35:00 
Presentation Time 25 minutes 
Registration for ISEC 
Paper # ISEC2009-79 
Volume (vol) vol.109 
Number (no) no.337 
Page pp.57-63 
#Pages 7 
Date of Issue 2009-12-09 (ISEC) 

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