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ARM TRUSTZONE FIRMWARE-BASED TRUSTED PLATFORM MODULE FOR ARM TRUSTZONE IMPLEMENTATIONS
ARM TRUSTZONE FIRMWARE-BASED TRUSTED PLATFORM MODULE FOR ARM TRUSTZONE IMPLEMENTATIONS
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机译：基于ARM TRUSTZONE固件的基于信任的平台模块，用于ARM TRUSTZONE的实现
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摘要
"Firmware-based TPM" or "fTPM" ensures that secure code execution is isolated, preventing a wide variety of potential security breaches. Unlike conventional hardware-based trust platform modules (TPMs), isolation can be achieved without the use of dedicated secure processor hardware or silicon. In general, fTPM is first instantiated in a free OS boot environment by reading the fTPM from system firmware or firmware accessible memory or storage and placing it in the device's protected read-only memory. When instantiated, fTPM enables execution isolation to ensure secure code execution. More specifically, the fTPM is placed in a protected read-only memory to enable the device to use hardware (e.g., TrustZone ™ extensions and security primitives (or similar processor architectures of ARM® architecture)), and thus this architecture It is possible for a device based on to provide secure execution isolation within a "firmware based TPM" without making hardware changes to the current device.
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