linux-kernel - Re: [PATCH 3/9] security: keys: trusted: Parse out individual components of the key blob

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Message-ID: <20210222073627.GB30403@codon.org.uk>
Date:   Mon, 22 Feb 2021 07:36:27 +0000
From:   Matthew Garrett <mjg59@...f.ucam.org>
To:     Jarkko Sakkinen <jarkko@...nel.org>
Cc:     Matthew Garrett <matthewgarrett@...gle.com>,
        linux-kernel@...r.kernel.org, linux-integrity@...r.kernel.org,
        linux-pm@...r.kernel.org, keyrings@...r.kernel.org,
        zohar@...ux.ibm.com, jejb@...ux.ibm.com, corbet@....net,
        rjw@...ysocki.net, Matthew Garrett <mjg59@...gle.com>
Subject: Re: [PATCH 3/9] security: keys: trusted: Parse out individual
 components of the key blob

On Sat, Feb 20, 2021 at 05:05:36AM +0200, Jarkko Sakkinen wrote:
> On Sat, Feb 20, 2021 at 01:32:49AM +0000, Matthew Garrett wrote:
> > Performing any sort of state validation of a sealed TPM blob requires
> > being able to access the individual members in the response. Parse the
> > blob sufficiently to be able to stash pointers to each member, along
> > with the length.
> > 
> > Signed-off-by: Matthew Garrett <mjg59@...gle.com>
> 
> I'll just say LGTM for now. Did not see anything obviously wrong in
> the code change (and does make sense to nitpick minor things just
> yet).
> 
> Need to understand the whole use case just a little bit better.

I wrote this up with some more detail at 
https://mjg59.dreamwidth.org/55845.html - it seemed longer than
appropriate for a commit message, but if you'd like more detail
somewhere I can certainly add it.