Abstract: By quantitatively mapping the fine-grained attributes defined by ABAC and by combining the basic features of BLP and Biba mandatory access models,an attempt is made to define a quantitative concept of security values related to attributes,and then a closed environment that can be calculated based on security values is built.Then a set of security values based on attribute mapping is calculated to meet the basic conditions of BLP and Biba mandatory access control model.Then BLP and Biba models are further optimized to fit the attribute security value and form a flexible mandatory access control model based on attribute security value.

Key words: BLP,Biba,ABAC,Attribute,Access control,Model