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Paper Abstract and Keywords
Presentation 2008-07-25 10:20
A Lattice Model of the General Confidentiality Policies
Taketoshi Sakuraba (Hitachi), Kouichi Sakurai (Kyushu Univ.)
Abstract (in Japanese) (See Japanese page) 
(in English) An information flow policy is defined as a set of information flow rules among security-classes. Implementations of such flow control systems sually adopt fixed structures of security-classes such as multilevel security. In an environment in which secrets are dynamically generated, and permissions are frequently changed, such fixed structure however does not work. We need to change the structure dynamically based on attributes of confidential information but not to adjust the secrets to fixed security-classes. This paper proposes a method that derives an information flow rule from confidentiality policy, a set of attributes of all secrets. The adequacy of the method is explained by semantics of secrets, and its properties are proved in a mathematical manner. The proposed method provides a lattice-based flow rules. We try to reduce the size of the lattice. Also,
we show that any information flow policies can be interpreted as a confidentiality policy, and that the lattice derived by Denning from the information flow policy is same with the lattice derived from the interpreted confidentiality policy.
Keyword (in Japanese) (See Japanese page) 
(in English) Information Flow Policy / Confidentiality Policy / Access Control / Lattice Model / Galois Connection / / /  
Reference Info. IEICE Tech. Rep., vol. 108, no. 162, ISEC2008-41, pp. 45-52, July 2008.
Paper #  
Date of Issue 2008-07-18 (ISEC) 
ISSN Print edition: ISSN 0913-5685  Online edition: ISSN 2432-6380
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Conference Information
Conference Date 2008-07-24 - 2008-07-25 
Place (in Japanese) (See Japanese page) 
Place (in English) Fukuoka Institute of System LSI Design Industry 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To IPSJ-CSEC 
Conference Code 2008-07-ISEC-SITE-CSEC 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) A Lattice Model of the General Confidentiality Policies 
Sub Title (in English)  
Keyword(1) Information Flow Policy  
Keyword(2) Confidentiality Policy  
Keyword(3) Access Control  
Keyword(4) Lattice Model  
Keyword(5) Galois Connection  
1st Author's Name Taketoshi Sakuraba  
1st Author's Affiliation Hitachi, Ltd., Co. (Hitachi)
2nd Author's Name Kouichi Sakurai  
2nd Author's Affiliation Kyushu University (Kyushu Univ.)
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Date Time 2008-07-25 10:20:00 
Presentation Time 25 
Registration for IPSJ-CSEC 
Paper # IEICE-ISEC2008-41 
Volume (vol) IEICE-108 
Number (no) no.162 
Page pp.45-52 
#Pages IEICE-8 
Date of Issue IEICE-ISEC-2008-07-18 

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