Research on the Security based on Utility Theory in Cloud Computing Environment

This paper focuses on the research of optimizing the safety and utility, proposing safety policy optimized model in cloud computing environment based on stochastic programming theory, building mathematical models which are on the basis of ensured data security to enhance the users’ utility, model analysis and optimization, and ultimately get the best optimized configuration of security policy in the cloud computing environment to guide the formulation and dynamic adjustment of access control policy in cloud computing environment, and to meet the users’ requirements, such as response time, resources availability and other utility requirements.