Re: Exposing the tpm 2.0 PCRs? (renamed subject)

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On Thu, Aug 01, 2019 at 12:58:44PM -0700, Matthew Garrett wrote:
> On Thu, Aug 1, 2019 at 10:35 AM Jarkko Sakkinen
> <jarkko.sakkinen@xxxxxxxxxxxxxxx> wrote:
> > What is meant by TPM 2.0 PCRs support?
> 
> You can read TPM 1.2 PCR values directly through sysfs. There's no
> equivalent mechanism for obtaining the TPM 2 PCR banks - you have to
> talk to the TPM yourself.

OK, when I did the TPM 2.0 support originally the conclusion was then
that since you can easily get what you need through /dev/tpm0, we don't
need such sysfs file.

That does mean that it cannot be added if there are legit reasons to
do so...

/Jarkko



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