linux-kernel - Re: [RFC 4/7] KEYS: trusted: Introduce TEE based Trusted Keys

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Message-ID: <20190613153202.GF18488@linux.intel.com>
Date:   Thu, 13 Jun 2019 18:32:02 +0300
From:   Jarkko Sakkinen <jarkko.sakkinen@...ux.intel.com>
To:     Sumit Garg <sumit.garg@...aro.org>
Cc:     keyrings@...r.kernel.org, linux-integrity@...r.kernel.org,
        linux-security-module@...r.kernel.org, jens.wiklander@...aro.org,
        corbet@....net, dhowells@...hat.com, jejb@...ux.ibm.com,
        zohar@...ux.ibm.com, jmorris@...ei.org, serge@...lyn.com,
        ard.biesheuvel@...aro.org, daniel.thompson@...aro.org,
        linux-doc@...r.kernel.org, linux-kernel@...r.kernel.org,
        tee-dev@...ts.linaro.org
Subject: Re: [RFC 4/7] KEYS: trusted: Introduce TEE based Trusted Keys

On Thu, Jun 13, 2019 at 04:00:30PM +0530, Sumit Garg wrote:
> Add support for TEE based trusted keys where TEE provides the functionality
> to seal and unseal trusted keys using hardware unique key.
> 
> Refer to Documentation/tee.txt for detailed information about TEE.
> 
> Approach taken in this patch acts as an alternative to a TPM device in case
> platform doesn't possess one.
> 
> Signed-off-by: Sumit Garg <sumit.garg@...aro.org>

How does this interact with the trusted module? Why there is no update
to security/keys/trusted-encrypted.txt?

Somehow the existing trusted module needs to be re-architected to work
with either. Otherwise, this will turn out to be a mess.

/Jarkko