Hash Tree Based Trustworthiness Verification Mechanism in Virtual Environment

摘要

The trustworthiness of virtual machines is a big security issue in cloud computing.In this paper,we aimed at designing a practical trustworthiness mechanism in virtual environment.With the assist of a third certificate agent,the cloud user generates a trust base and extends it to its VMs.For each service running on the VM,a hash value is generated from all the necessary modules,and these hash values are organized and maintained with a specially designed hash tree whose root is extended from the user's trust base.Before the VM loads a service,the hash tree is verified from the coordinated hash value to check the trustworthiness of the service.