Dynamic trusted measurement model of operating system kernel

Abstract

Dynamic trusted measurement is a hot and difficult research topic in trusted computing.Concerning the measurement difficulty invoked by the dynamic nature of operating system kernel,a Dynamic Trusted Kernel Measurement(DTKM) model was proposed.Dynamic Measurement Variable(DMV) was presented to describe and construct dynamic data objects and their relations,and the method of semantic constraint was proposed to measure the dynamic integrity of kernel components.In DTKM,the collection of memory data was implemented in real-time,and the dynamic integrity was verified by checking whether the constructed DMV was consistent with semantic constraints which were defined based on the security semantics.The nature analysis and application examples show that DTKM can effectively implement dynamic measurement of the kernel and detect the illegal modification of the kernel dynamic data.