EXPOSING CRYPTOGRAPHIC MEASUREMENTS OF PERIPHERAL COMPONENT INTERCONNECT EXPRESS (PCIE) DEVICE CONTROLLER FIRMWARE

Examples disclosed herein include are computing device hardware components, computing devices, systems, machine-readable mediums, and interconnect protocols that provide for code object measurement of a peripheral device and a method for accessing the measurements to verify integrity across a comput...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: Pearson, Adrian, Natu, Mahesh
Format: Patent
Sprache:eng
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Beschreibung
Zusammenfassung:Examples disclosed herein include are computing device hardware components, computing devices, systems, machine-readable mediums, and interconnect protocols that provide for code object measurement of a peripheral device and a method for accessing the measurements to verify integrity across a computing interconnect (e.g., Peripheral Component Interconnect Express - PCIe). For example, a cryptographic processor of a PCIe endpoint (such as a peripheral) may take a measurement (e.g., computing a hash value) of a code object on the device prior to executing the code object. This measurement may be placed in a register that is accessible to another component, such as a host operating system across a PCIe bus for interrogation. The host operating system may utilize an interconnect protocol, such as a PCIe protocol to access the measurement. These measurements may be consumed by a Trusted Platform Manager or other components of a host system that may verify the measurements.