Re: [PATCH v4 1/1] tpm: add sysfs exports for all banks of PCR registers

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On Tue, Aug 18, 2020 at 02:55:50PM -0400, Mimi Zohar wrote:

> The problem is that there isn't just one single userspace library or
> application for reading PCRs.  So now not only is there the kernel
> "boot_aggregate" regression testing, but regression testing of the tool
> itself to support multiple methods of reading the PCRs.

I was thinking just open code 
  open("/dev/tpm")
  write(read_pcrs_cmd)
  read(read_pcrs_cmd)
 
It isn't particularly hard to retrive the PCRs, don't really need to
depend on a library.

Jason



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