| Project/Area Number |
21700045
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Single-year Grants |
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| Research Field |
Software
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| Research Institution | Kochi University of Technology |
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Principal Investigator |
TAKATA Yoshiaki Kochi University of Technology, 工学部, 准教授 (60294279)
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| Project Period (FY) |
2009 – 2010
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| Project Status |
Completed (Fiscal Year 2010)
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| Budget Amount *help |
¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000)
Fiscal Year 2010: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2009: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
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| Keywords | 自動検証 / モデル検査 / 形式モデル / プッシュダウンシステム / 形式的検証 / 形式言語理論 / マルチスレッド |
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| Research Abstract |
In this study, we proposed a method for automatically inserting check statements for access control into a given recursive program according to a given security specification. A history-based access control (HBAC) was assumed as the access control model. A security specification is given in terms of information flow. We say that a program P satisfies a specification S if P is type-safe when we consider each security class in S as a type. We first defined the problem as the one to insert check statements into a given program P to obtain a program P' that is type-safe for a given specification S. This type system is sound in the sense that if a program P is type-safe for a specification S, then P has noninterference property for S. Next, the problem was shown to be co-NP-hard and we proposed a fix-point computation algorithm for solving the problem. The experimental results based on our implemented system showed that the proposed method can work within reasonable time.
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