Assume the followings:

• Privileges: read (R), write (W), execute (X)
• Resources:
  • Image files: tamuc.jpg, jkim.png, csci351.gif
  • Document files: syllabus.doc, lecture.ppt
  • Binary files: a.exe, b.exe, c.exe
• Access permissions:
  • A has privilege to read all the image files.
  • B has privilege to read and write all the document files.
  • A and C have privilege to read syllabus.doc.
  • A and B have privilege to read and execute a.exe, b.exe.
  • B and C have privilege to read tamuc.jpg.

1. Construct an access control matrix.

2. Construct an access control list.

3. Construct capabilities