11.3 Implementation of Access Matrix

Each column = Access-control list for one object .Defines who can perform what operation.

Domain 1 = Read, Write

Domain 2 = Read

Domain 3 = Read

Each Row = Capability List (like a key)

Fore each domain, what operations allowed on what objects.

Object 1 – Read

Object 4 – Read, Write, Execute

Object 5 – Read, Write, Delete, Copy

Access Matrix of Figure A With Domains as Objects

Figure B

Access Matrix with Copy Rights

Access Matrix With Owner Rights

Modified Access Matrix of Figure B