Re: [RFD] linux-firmware key arrangement for firmware signing

Petko Manolov
2015-05-21T16:43:38Z

On 15-05-21 16:51:49, David Howells wrote:
>
> I do have patches to parse PGP key data and add the public keys found therein
> onto the kernel keyring, but that would mean adding an extra key data parser.

PGP is widely used so i would gladly have one more parser in the kernel.

> You could probably do this with the integrity functions - but turning them on
> has a performance cost and you have to load things in the right order as I
> understand it.

The performance hit is negligible, especially on modern hardware. The problem
is that Joe user must wrap his head around IMA as a concept and go through the
pains of doing everything right. Failing to do so will result in a lot of
frustration, and i speak from experience.

Once you make it run properly it mostly stays out of your way. To put it
another way: IMA is not for sissies... :)

Petko