Trusted virtual platforms: a key enabler for converged client devices

This paper introduces our work around combining machine virtualization technology with Trusted Computing Group technology. We first describe our architecture for reducing and containing the privileged code of the Xen Hypervisor. Secondly we describe our Trusted Virtual Platform architecture. This is aimed at supporting the strong enforcement of integrity and security policy controls over a virtual entity where a virtual entity can be either a full guest operating system or virtual appliance running on a virtualized platform. The architecture includes a virtualization-specific integrity measurement and reporting framework. This is designed to reflect all the dependencies of the virtual environment of a guest operating system. The work is a core enabling component of our research around converged devices -- client platforms such as notebooks or desktop PCs that can safely host multiple virtual operating systems and virtual appliances concurrently and report accurately on the trustworthiness of the individually executing entities.