Research On Trust Management Of Cloud Service Based On Trusted Computing

Cloud computing since its inception,its development is very rapid,but the security issue is always the most noteworthy aspects,including trust management for the sustainable development of cloud computing is one of the most critical issues.Cloud services have raised a number of key issues due to their highly dynamic,distributed,and non-transparent features such as privacy,security,and availability.Protecting cloud service providers from users' malicious user attacks is also a tricky issue.Now with the continuous progress of Internet technology,cloud computing can be through the network to provide users with more powerful features and better service,and in essence,cloud computing is based on the Internet-related services to increase,use and delivery model.One of the biggest features of cloud computing systems is the huge amount of users,and this feature also brings a variety of security risks.In this context,for the key issue of trust management,this paper deeply studies the theory and technology of trusted computing.First of all,this paper analyzes the trust problem and the basic trust research model in cloud environment,and summarizes some existing trust measurement methods and trust reasoning methods,and draws the key knowledge points from the method of trust measurement and reasoning,Which provides the theoretical basis for the cloud computing model proposed later.Secondly,we will further analyze the technical methods of detecting malicious attacks and design the formulas to calculate the credibility of user evaluation,so that users can choose the trustworthy cloud service providers more effectively.This paper presents a credibility model to detect misleading feedback in conspiracy attacks,as well as witch attacks.Based on the design concept of cloud computing trust management,this model introduces a method to calculate the credibility of user evaluation as the trusted weight of the evaluation evidence.Then,this paper presents a new trust model which can evaluate the security strength of cloud computing system objectively.The model uses a trust value to characterize the overall security strength of the cloud computing system,which is generated by a list of parameters that cover multidimensional security.The list of parameters covers all aspects of identity management,authentication,data protection and a comprehensive measure of the security strength of cloud computing systems.Finally,through the real trust feedback in the cloud service,the experiment results show that the two research models have better completeness and accuracy of the evaluation of the security strength of the cloud computing system,and can better identify the conspiracy attack and witch attackfrom malicious users,calculate the credibility of user evaluation.