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Date: Wed, 15 May 2024 15:03:15 +0300
Message-Id: <D1A7BZNCNPW8.281BRWPJVW0JX@kernel.org>
Cc: "James Bottomley" <James.Bottomley@hansenpartnership.com>, "Mimi Zohar"
 <zohar@linux.ibm.com>, "David Howells" <dhowells@redhat.com>, "Paul Moore"
 <paul@paul-moore.com>, "James Morris" <jmorris@namei.org>,
 <serge@hallyn.com>, <linux-integrity@vger.kernel.org>,
 <keyrings@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
 <kernel-team@cloudflare.com>
Subject: Re: [RFC PATCH 2/2] KEYS: implement derived keys
From: "Jarkko Sakkinen" <jarkko@kernel.org>
To: "Jarkko Sakkinen" <jarkko@kernel.org>, "Ignat Korchagin"
 <ignat@cloudflare.com>
References: <20240503221634.44274-1-ignat@cloudflare.com>
 <20240503221634.44274-3-ignat@cloudflare.com>
 <D19QW70177QG.2YC9XL0FT7VME@kernel.org>
 <D19RM0OV7YUW.1ZEI72XQUREMQ@kernel.org>
 <CALrw=nEnqBCBQKhK9ACc7tbicqkXaDD+Bjc1d90xizMvbb--oA@mail.gmail.com>
 <D1A79NQ33IGG.OYIRO9S4YWZS@kernel.org>
In-Reply-To: <D1A79NQ33IGG.OYIRO9S4YWZS@kernel.org>

On Wed May 15, 2024 at 3:00 PM EEST, Jarkko Sakkinen wrote:
> I did as much clarification as I possibly can.
>
> Also, if you look at confidential computing platforms there's exactly
> two assets that they use lock into machine:
>
> - Binary
> - CPU material
>
> Only carved into stone immutable material for key derivation.
>
> You can use mm_struct->exe_file binary if that will work out for you.
> I'm done with this version.

Pretty good case for having SGX, TDX and SNP in something else than just
Xeon's and EPYC's ;-)

But yeah within time limits I have I've used more quota for this
than I should have.

I look at +1 (if there is one).

BR, Jarkko