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CS 140 Lecture Notes: Protection

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Presentation on theme: "CS 140 Lecture Notes: Protection"— Presentation transcript:

1 CS 140 Lecture Notes: Protection
Access Matrix File A File B File C Printer 1 Alice RW OK Bob R Carol David Elizabeth CS 140 Lecture Notes: Protection

2 CS 140 Lecture Notes: Protection
Access Matrix File A File B File C Printer 1 Alice RW OK Bob R Carol David Elizabeth Access Control List CS 140 Lecture Notes: Protection

3 CS 140 Lecture Notes: Protection
Access Matrix File A File B File C Printer 1 Alice RW OK Bob R Carol David Elizabeth Capability List CS 140 Lecture Notes: Protection

4 CS 140 Lecture Notes: Protection
Capability Lists Alice’s capabilities Bob’s capabilities Sharing and communication impossible! CS 140 Lecture Notes: Protection

5 Sharing with Capabilities
Alice’s capabilities Bob’s capabilities Shared capability list CS 140 Lecture Notes: Protection

6 CS 140 Lecture Notes: Protection

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