A Security Access Control Model Based on User Behavior Trust under Cloud Environment

In order to solve the security problem of multi- tenant access process in cloud computing,a security access control model is proposed based on user behavior trust under cloud environment.The model obtains the evidence of relevant security behavior by real- time monitoring the mass user access behavior under cloud environment.Meanwhile,the model introduces the analytic hierarchy process based on fuzzy consistent matrix(fuzzy AHP)to evaluate the user behavior trust comprehensively,and builds a user dynamic allocation mechanism based on behavior trust level,which not only can control user unsafe access behavior effectively to protect important resources in the cloud,but also can help to establish long- term trust mechanism between the users and the cloud service by the real- time feedback of the user behavior trust condition.Additionally,physical structure,operation principle,trust evaluation of the user behavior,the detailed process and examples of dynamic allocation of cloud service level of the model are all given in this paper.