Re: [PATCH V34 10/29] hibernate: Disable when the kernel is locked down

From: Joey Lee
Date: Wed Jul 10 2019 - 12:20:58 EST


On Mon, Jun 24, 2019 at 03:21:23PM +0200, Jiri Kosina wrote:
> On Sat, 22 Jun 2019, Pavel Machek wrote:
> > > There is currently no way to verify the resume image when returning
> > > from hibernate. This might compromise the signed modules trust model,
> > > so until we can work with signed hibernate images we disable it when the
> > > kernel is locked down.
> >
> > I keep getting these...
> >
> > IIRC suse has patches to verify the images.
> Yeah, Joey Lee is taking care of those. CCing.

The last time that I sent for hibernation encryption and authentication is

It needs some big changes after review:
- Simplify the design: remove keyring dependency and trampoline.
- Encrypted whole snapshot image instead of only data pages.
- Using TPM:
- Direct use TPM API in hibernation instead of keyring
- Localities (suggested by James Bottomley)

I am still finding enough time to implement those changes, especial TPM

Joey Lee