Re: [RFC PATCH 2/2] kexec, KEYS: Make use of platform keyring for signature verify

[nayna]

On 2019-01-14 21:42, Dave Young wrote:
> On 01/14/19 at 11:10am, Mimi Zohar wrote:
> > On Sun, 2019-01-13 at 09:39 +0800, Dave Young wrote:
> > > Hi,
> > >
> > > On 01/11/19 at 11:13am, Mimi Zohar wrote:
> > > > On Fri, 2019-01-11 at 21:43 +0800, Dave Young wrote:
> > > > [snip]
> > > >
> > > > > Personally I would like to see platform key separated from integrity.
> > > > > But for the kexec_file part I think it is good at least it works with
> > > > > this fix.
> > > > >
> > > > > Acked-by: Dave Young <dyoung@xxxxxxxxxx>
> > > >
> > > > The original "platform" keyring patches that Nayna posted multiple
> > > > times were in the certs directory, but nobody commented/responded. ÂSo
> > > > she reworked the patches, moving them to the integrity directory and
> > > > posted them (cc'ing the kexec mailing list). ÂIt's a bit late to be
> > > > asking to move it, isn't it?
> > >
> > > Hmm, apologize for being late,  I did not get chance to have a look the
> > > old series.  Since we have the needs now, it should be still fine
> > >
> > > Maybe Kairui can check Nayna's old series, see if he can do something
> > > again?
> >
> > Whether the platform keyring is defined in certs/ or in integrity/ the
> > keyring id needs to be accessible to the other, without making the
> > keyring id global. ÂMoving where the platform keyring is defined is
> > not the problem.
>
> Agreed, but just feel kexec depends on IMA sounds not good.

The platform keyring is not dependent on IMA, it is dependent on 
"integrity" - CONFIG_INTEGRITY_ASYMMETRIC_KEYS.
Other CONFIGS which it needs are CONFIG_SYSTEM_BLACKLIST_KEYRING, 
CONFIG_EFI.

Thanks & Regards,
   - Nayna