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From: David Howells <dhowells@redhat.com>
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To: James Bottomley <James.Bottomley@HansenPartnership.com>
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Date: Tue, 11 Aug 2015 21:24:55 +0100
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Cc: Kyle McMartin <jkkm@jkkm.org>, Luis Rodriguez <mcgrof@gmail.com>,
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Subject: Re: [Ksummit-discuss] [TECH TOPIC] Firmware signing
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Hi James,

The top patch here:

	http://git.kernel.org/cgit/linux/kernel/git/dhowells/linux-fs.git/log/?h=3D=
modsign-pkcs7-2

allows demand loading of keys based on their SKID into a special keyring f=
rom
which they get erased after an arbitrary 3 minutes of existence.  This key=
 can
then be used to verify a signature instead of using the primary system key=
ring
used for module signature checking.

Building on this, a driver could have a SKID compiled into it which could =
then
be used to load a key for request_firmware() to use in verifying the blobs
that that driver requires.

David