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AssigneeMicrosoft Corporation
InventorsStefan Thom, Jeremiah Cox, David Linsley, Magnus Nystrom, Himanshu Raj, David Robinson, Stefan Saroiu, Rob Spiger, Alastair Wolman
Estimating the term…
A “Firmware-Based TPM” or “fTPM” ensures that secure code execution is isolated to prevent a wide variety of potential security breaches. Unlike a conventional hardware based Trusted Platform Module (TPM), isolation is achieved without the use of dedicated security processor hardware or silicon. In general, the fTPM is first instantiated in a pre-OS boot environment by reading the fTPM from system firmware or firmware accessible memory or storage and placed into read-only protected memory of the device. Once instantiated, the fTPM enables execution isolation for ensuring secure code execution. More specifically, the fTPM is placed into protected read-only memory to enable the device to use hardware such as the ARM® architecture's TrustZone™ extensions and security primitives (or similar processor architectures), and thus the devices based on such architectures, to provide secure execution isolation within a “firmware-based TPM” without requiring hardware modifications to existing devices.
A method, comprising:
A system, comprising:
A computer-readable storage device having computer executable instructions stored therein, said instructions causing a computing device to perform actions comprising:
Dependencies are inferred from the claim text.