CS 140 Lecture Notes: Protection

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Presentation transcript:

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

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

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

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

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

CS 140 Lecture Notes: Protection