lkml.org 
[lkml]   [2010]   [Nov]   [8]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
SubjectRe: [PATCH v1.2 3/4] keys: add new trusted key-type
From
Date
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


\
 
 \ /
  Last update: 2010-11-08 19:23    [W:0.067 / U:0.328 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site