A secure virtual data center based on data labeled cloud-agent

How to establish a trusted framework in an untrusted environment is an important problem in many areas. So it is in the field of cloud service. It´s also hard to find the balance between assuring security of the cloud users´ privacy and keeping the usability and efficiency of the cloud service. This paper proposes a scheme of virtual data center, which works as a cloud-agent. We adopt two key technologies, data label and transparent data encryption, to resolve the contradictions mentioned above. Based on the scheme, we have developed a prototype system. Our scheme is proved to be efficient and achieves desired goals after functional and performance tests.