linux-kernel - Re: [PATCH v1 0/3] KEYS: trusted: Introduce support for NXP CAAM-based trusted keys

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Date:   Thu, 1 Apr 2021 13:05:34 +0200 (CEST)
From:   Richard Weinberger <richard@....at>
To:     Ahmad Fatoum <a.fatoum@...gutronix.de>
Cc:     Jarkko Sakkinen <jarkko@...nel.org>,
        horia geanta <horia.geanta@....com>,
        Mimi Zohar <zohar@...ux.ibm.com>,
        aymen sghaier <aymen.sghaier@....com>,
        Herbert Xu <herbert@...dor.apana.org.au>,
        davem <davem@...emloft.net>,
        James Bottomley <jejb@...ux.ibm.com>,
        kernel <kernel@...gutronix.de>,
        David Howells <dhowells@...hat.com>,
        James Morris <jmorris@...ei.org>,
        "Serge E. Hallyn" <serge@...lyn.com>,
        Steffen Trumtrar <s.trumtrar@...gutronix.de>,
        Udit Agarwal <udit.agarwal@....com>,
        Jan Luebbe <j.luebbe@...gutronix.de>,
        david <david@...ma-star.at>,
        Franck Lenormand <franck.lenormand@....com>,
        Sumit Garg <sumit.garg@...aro.org>,
        linux-integrity <linux-integrity@...r.kernel.org>,
        "open list, ASYMMETRIC KEYS" <keyrings@...r.kernel.org>,
        Linux Crypto Mailing List <linux-crypto@...r.kernel.org>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        LSM <linux-security-module@...r.kernel.org>
Subject: Re: [PATCH v1 0/3] KEYS: trusted: Introduce support for NXP
 CAAM-based trusted keys

Ahmad,

----- Ursprüngliche Mail -----
> Von: "Ahmad Fatoum" <a.fatoum@...gutronix.de>
>> I don't want you to force to use cryptsetup.
> 
> I'd love to use cryptsetup with LUKS and trusted keys eventually. I'll take

But using LUKS would mean that cryptsetup has access to the plain disc encryption key material?
This would be a no-go for many systems out there, key material must not accessible to userspace.
I know, distrusting userspace root is not easy, but doable. :)

Thanks,
//richard