A discuss of computer security strategy models

From the three basic character of the computer security: confidentiality, integrity, availability, the paper studies the Bell-Lapadula confidentiality model, the Biba integrity model, the Clark-Wilson integrity model and Chinese wall Model. This paper also studies the relation among three models of the Bell-Lapadula model, the Biba model and he Clark-Wilson model, studies the relation and distinguishes between the Bell-Lapadula model and the China Wall model from the point of the information security.