Hi Eric, On Mon, 2021-11-15 at 19:15 -0500, Eric Snowberg wrote: > Many UEFI Linux distributions boot using shim. The UEFI shim provides > what is called Machine Owner Keys (MOK). Shim uses both the UEFI Secure > Boot DB and MOK keys to validate the next step in the boot chain. The > MOK facility can be used to import user generated keys. These keys can > be used to sign an end-users development kernel build. When Linux > boots, both UEFI Secure Boot DB and MOK keys get loaded in the Linux > .platform keyring. , which can be used to verify kexec'ed kernel images. > Define a new Linux keyring called machine. This keyring shall contain just > MOK CA keys and not the remaining keys in the platform keyring. This new > machine keyring will be used in follow on patches. Unlike keys in the > platform keyring, keys contained in the machine keyring will be trusted > within the kernel if the end-user has chosen to do so. allowing, for example, keys to be loaded onto the trusted IMA keyring. > > Signed-off-by: Eric Snowberg <eric.snowberg@xxxxxxxxxx> Thank you for all the work! Just letting you know I'm slowly making my through the patch set. With the previous patch re-organization, we should be able to test everything up to the introduction of the MOK variable support. Reviewed-by: Mimi Zohar <zohar@xxxxxxxxxxxxx>
