Messages in this thread | | | Subject | Re: [PATCH v1.2 3/4] keys: add new trusted key-type | From | David Safford <> | Date | Mon, 08 Nov 2010 13:18:33 -0500 |
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On Mon, 2010-11-08 at 10:09 -0700, Jason Gunthorpe wrote: > On Mon, Nov 08, 2010 at 10:30:45AM -0500, Mimi Zohar wrote: > > > pcrlock=n extends the designated PCR 'n' with a random value, > > so that a key sealed to that PCR may not be unsealed > > again until after a reboot. > > Nice, but this seems very strange to me, since it has nothing to do > with the key and could be done easially in userspace? > > Jason
This is strictly for convenience in initramfs, so that the trusted key can be loaded and locked in a single command, with no need for an additional application to extend a PCR. As the the TPM driver already has support for extend, it's a trivial addition.
dave
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