A Dependable, Scalable Maintenance Scheme for Stateful License in DRM

Along with the emergence of trusted computing, it became possible to restrict unauthorized access behaviors on published resources. Subsequently, information security researchers began to implement the functionality of DRM (digital rights management) based on this new technology. To support more flexible access control, stateful license was introduced into such attempts. As a result, how to maintain these authorization information carriers turned into an inevitable problem which needs to be solved carefully. For this requirement, we present a dependable, scalable scheme, which integrates the latest advances both in trusted computing and virtualization.