Category Archives: TPM

Is EVERY time we power on the computer verified that nothing have been tampered via PUF CRP authentication? By which component? Where are CRPs stored?

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Are PUFs used, EVERY time we power on the computer, to verify that nothing have been tampered (by using CRP authentication)?
Which element performs this authentication? (bios, secureboot, I don’t know)?
Where are CRPs stored? In which ele… Continue reading Is EVERY time we power on the computer verified that nothing have been tampered via PUF CRP authentication? By which component? Where are CRPs stored?→

Is PUF Challenge-Response Authentication applied on every power-up event? [closed]

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Are PUFs used, EVERY time we power on the computer to verify that nothing has been tampered with (by using CRP authentication)?
Which element performs this authentication? (bios, secureboot, I don’t know)?
Where are CRPs stored? In which … Continue reading Is PUF Challenge-Response Authentication applied on every power-up event? [closed]→

TPM – How the integrity of the system configuration is guaranteed if the PCR hash is overwritten on each "Measurement"?

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In the TPM architecture, we know that after a "Measurement" procedure is performed, it is followed by a "PCR Extend" procedure, in which the resulting system configuration metrics data (20 bytes) are appended to the val… Continue reading TPM – How the integrity of the system configuration is guaranteed if the PCR hash is overwritten on each "Measurement"?→

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