Cloud Computing Security:Architecture,Mechanism and Modeling

With the wide use of cloud computing services,tenants require higher and higher security assurance.The characteristics of cloud computing are dynamics,randomness,complexity and openness,which make the original security solutions difficult to be applied to the cloud environment,so this is a big obstacle to the development of cloud computing.We analyze the features and security challenges of cloud computing,and do a survey on security architecture,mechanism and model.We propose a security architecture which needs trusted root,trusted link and trusted high level services to be the security assurance,and it also needs controllable,monitorable security management and measurable process of security optimization.We analyze and compare the present research results of security model and mechanism in the cloud.At last,we propose a security modeling method based on the multiqueue multiserver model.