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 -- To unsubscribe from this list: send the line "unsubscribe linux-crypto" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
