David Howells <dhowe...@redhat.com> wrote:
> Takashi Iwai <ti...@suse.de> wrote:
>
> > this is a patch series to add the support for firmware signature
> > check. At this time, the kernel checks extra signature file (*.sig)
> > for each firmware, instead of embedded signature.
> > It's just a quick hack using the existing module signing mechanism,
> > thus provided only as a proof of concept for now.
>
> There is another way to do this. If you look at the patches I proposed to
> wrap keys in PE binaries, you'll find that that can handle PKCS#7 format
> messages as that's what's in the sort of signed PE binary we're dealing with.
See:
http://git.kernel.org/?p=linux/kernel/git/dhowells/linux-modsign.git;a=shortlog;h=refs/heads/devel-pekey
> You could use this to put the firmware inside a signed-data PKCS#7 message.
Note that the ASN.1 decoder in the kernel would need altering to handle
messages larger than 64KB.
David
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