Note-5 - CSE 467/598 Data and Information Security Prof...

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CSE 467/598 Data and Information Security Prof. Gail-Joon Ahn 2 Reading: Chapter 2
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based on the slides for "Computer Security: Art and Science" 3 Access Control Matrix ! Overview ! Access Control Matrix Model ! Boolean Expression Evaluation ! History ! Protection State Transitions ! Commands ! Conditional Commands ! Special Rights ! Principle of Attenuation of Privilege based on the slides for "Computer Security: Art and Science" 4 Reminder: Types of Mechanisms secure precise broad set of reachable states set of secure states
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based on the slides for "Computer Security: Art and Science" 5 States Data Privilege States Authorization Privilege States Values of the system directly relevant to data protection Values of the system relevant to authorization management Protection States based on the slides for "Computer Security: Art and Science" 6 State of an Information System Data Tables Files Excel Sheets Data Access Control Authorization Control Data State Data Privilege State Authorization Privilege State Protection State Employee Records Database
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based on the slides for "Computer Security: Art and Science" 7 Overview ! Protection state of system ! Describes current settings, values of the system relevant to protection ! Access control matrix ! Describes protection state precisely ! In particular, it describes the rights of subjects based on the slides for "Computer Security: Art and Science" 8 Access control matrix !"#$%&’ )$*&+&+$’, ’-"#$%&’ ! . ! / 0 ! " # . 0 # $ ! . 0 ! " ! Subjects S = { s 1 ,…, s n } !
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