Dynamic Evaluation Model of Cloud Platform User Trust Value Based on Game Theory

Trust value mode is becoming more and more significant in computer access control systems. In this paper, we present a dynamic evaluation model of cloud platform user trust value based on game theory in order to resolve the problem of illegitimate access by user. The reward and punishment factors are set in the model, and the legal access behavior will be rewarded, the illegitimate access behavior will be punished. It will make users to choose legal access under their own interests, which will protect the system. We make an experiment in cloud platform using this model, and the result shows that the model has a good effect on the user trust value adjustment.