Which of the following is a state machine model capturing confidentiality aspects of access control?
A.
Clarke Wilson
B.
Bell-LaPadula
C.
Chinese Wall
D.
Lattice
Explanation:
Bell-LaPadula is a state machine model capturing confidentiality aspects of access control. Access
permissions are defined through an Access Control matrix and through a partial ordering of security
levels. Security policies prevent information flowing downwards from a high security level to a low
security level. BLP only considers the information flow that occurs when a subject observes or alters
an object.