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- W2358777772 abstract "Mandatory access control (MAC) plays an important role in highly secured database systems. MAC requires that all users and resources are classified and assigned a security label, which is a combination of a hierarchical security level and non hierarchical security categories. Most MAC systems use “downward read” and “upward write” as access rules, which seriously constrains data availability. Besides, there are some flaws in the rule for category control. To solve these problems and improve both flexibility and security, this paper introduces an enhanced multilevel security (MLS) model with extended security labels and corresponding access rules. An extended label specifies a user's clearance for read and write separately, which allows the user to read and write data of appropriate sensitivity respectively. More over, an extended security label may include multiple category sets, controlling data access from different aspects. This paper also gives the formal representations of the mandatory access control model with a series of definitions and theorems as well as its access control rules. The model presented in this paper is compared with some available commercial DBMS with MAC: Trusted Oracle 7 and DM2." @default.
- W2358777772 created "2016-06-24" @default.
- W2358777772 creator A5033043456 @default.
- W2358777772 date "2000-01-01" @default.
- W2358777772 modified "2023-09-23" @default.
- W2358777772 title "The Model of Mandatory Access Control with Extended Security Label" @default.
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