linux-kernel - Re: [PATCH RFC 00/12] Enroll kernel keys thru MOK

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:   Wed, 7 Jul 2021 10:23:04 -0600
From:   Eric Snowberg <eric.snowberg@...cle.com>
To:     Christoph Hellwig <hch@...radead.org>
Cc:     keyrings@...r.kernel.org,
        linux-integrity <linux-integrity@...r.kernel.org>,
        Mimi Zohar <zohar@...ux.ibm.com>,
        David Howells <dhowells@...hat.com>,
        David Woodhouse <dwmw2@...radead.org>,
        herbert@...dor.apana.org.au, davem@...emloft.net,
        jarkko@...nel.org, jmorris@...ei.org, serge@...lyn.com,
        keescook@...omium.org, gregkh@...uxfoundation.org,
        torvalds@...ux-foundation.org, scott.branden@...adcom.com,
        weiyongjun1@...wei.com, nayna@...ux.ibm.com, ebiggers@...gle.com,
        ardb@...nel.org, nramas@...ux.microsoft.com, lszubowi@...hat.com,
        linux-kernel@...r.kernel.org, linux-crypto@...r.kernel.org,
        linux-security-module@...r.kernel.org,
        James.Bottomley@...senpartnership.com, pjones@...hat.com,
        glin@...e.com, "konrad.wilk@...cle.com" <konrad.wilk@...cle.com>
Subject: Re: [PATCH RFC 00/12] Enroll kernel keys thru MOK


> On Jul 7, 2021, at 12:46 AM, Christoph Hellwig <hch@...radead.org> wrote:
> 
> On Tue, Jul 06, 2021 at 10:43:51PM -0400, Eric Snowberg wrote:
>> This is a follow up to the "Add additional MOK vars" [1] series I 
>> previously sent.  This series incorporates the feedback given 
>> both publicly on the mailing list and privately from Mimi. This 
>> series just focuses on getting end-user keys into the kernel trust 
>> boundary.
> 
> WTF is MOK?

MOK stands for Machine Owner Key.   The MOK facility can be used to 
import keys that you use to sign your own development kernel build, 
so that it is able to boot with UEFI Secure Boot enabled. Many Linux 
distributions have implemented UEFI Secure Boot using these keys 
as well as the ones Secure Boot provides.  It allows the end-user 
a choice, instead of locking them into only being able to use keys 
their hardware manufacture provided, or forcing them to enroll keys 
through their BIOS.