Architecture For Supporting Attestation Of A Virtual Machine In A Single Step

摘要

The presented method allows a virtual TRUSTED PLATFORM MODULE (TPM) instance to map the Platform Configuration Registers (PCR) register state of a parent virtual TPM instance into its own register space and export the state of those registers to applications inside the virtual machine associated with the virtual TPM instance. Through the mapping of PCR registers, the procedure of attesting to the overall state of a virtual machine can be accelerated, since the state of all measurements relevant to the trustworthiness of a virtual machine are all visible in the combined view of mapped and non-mapped PCR registers. Registers that are mapped into the register space of a virtual TPM instance reflect the state of trustworthiness of those virtual machines that were involved in the creation of the virtual machine that is being challenged.