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US 12,602,496 B2Granted
Commands communications
AssigneeHewlett-Packard Development Company, L.P.
InventorsAdrian Laurence Shaw, Remy Husson, Adrian John Baldwin, Joshua Serratelli Schiffman, Christopher Ian Dalton
Life of this patent
Estimating the term…
Abstract
In an example, a hypervisor measuring the state of a protected virtual machine using a Trusted Platform Module (TPM) filter. Using the TPM filter, the system ensures an untrusted operating system attempting to access the TPM is secure, without having to trust the security of the operating system or the operating system's built in hypervisor.
Claims21
A non-transitory computer-readable medium having instructions that, when executed by a processor of a computing device, cause the computing device to:
- intercept, from an operating system of the computing device, a command that attempts to interact with a trusted platform module (TPM) of the computing device;
- identify, from among a plurality of platform configuration registers in the TPM, a particular PCR that the command targets;
- and
- block in response to determining that the particular PCR is assigned to a protected virtual application that executes within a virtual machine, the command from interacting with the TPM.
1 more element
Dependencies are inferred from the claim text.