Re: [RFC PATCH 12/12] IMA: Use the the system trusted keyrings instead of .ima_mok [ver #2]
From: David Howells
Date: Tue Mar 08 2016 - 08:08:45 EST
Mimi Zohar <zohar@xxxxxxxxxxxxxxxxxx> wrote:
> Only certificates signed by a key on the system keyring were added to
> the IMA keyring, unless IMA_MOK_KEYRING was configured. Then, the
> certificate could be signed by a either a key on the system or ima_mok
> keyrings. To replicate this behavior, the default behavior should be to
> only permit certificates signed by a key on the builtin keyring, unless
> this new Kconfig is enabled. Only then, permit certificates signed by a
> key on either the builtin or secondary keyrings to be added to the IMA
How about I change it to a choice-type item, with the following options:
(1) No addition.
(2) Addition restricted by built-in keyring.
(3) Addition restricted by secondary keyring + built-in keyring.
where the second and third options then depend on the appropriate keyrings