Access Control Strategy Based on Trust under Cloud Computing Platform

To ensure the availability of system in node interaction under cloud computing, a trust based access control model is proposed in this paper. The model considers the factors including time, weight, QoS and corresponding influence on service nodes. It also utilizes the transitivity of trust to assure that each service of request node can acquire reliable response, which reduce the possibility of none response for resource application. The simulation results indicate the improved access model can raise the objectivity of user trust value and resist all kinds of illegal users to access the cloud computing, which also increase the security and reliability of resources.