linux-kernel - Re: [PATCH 08/10] tpm: seal/unseal for TPM 2.0

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Message-ID: <20151107213919.GA13027@intel.com>
Date:	Sat, 7 Nov 2015 23:39:19 +0200
From:	Jarkko Sakkinen <jarkko.sakkinen@...ux.intel.com>
To:	Jeremiah Mahler <jmmahler@...il.com>,
	tpmdd-devel@...ts.sourceforge.net, linux-kernel@...r.kernel.org,
	peterhuewe@....de, gregkh@...uxfoundation.org,
	jgunthorpe@...idianresearch.com, dhowells@...hat.com,
	artem.bityutskiy@...ux.intel.com,
	Marcel Selhorst <tpmdd@...horst.net>,
	David Safford <safford@...ibm.com>,
	Mimi Zohar <zohar@...ux.vnet.ibm.com>,
	"open list:KEYS-TRUSTED" <linux-security-module@...r.kernel.org>,
	"open list:KEYS-TRUSTED" <keyrings@...r.kernel.org>
Subject: Re: [PATCH 08/10] tpm: seal/unseal for TPM 2.0

On Sat, Nov 07, 2015 at 10:58:03AM -0800, Jeremiah Mahler wrote:
> Jarkko,
> 
> On Fri, Oct 16, 2015 at 09:40:27PM +0300, Jarkko Sakkinen wrote:
> > Added tpm_trusted_seal() and tpm_trusted_unseal() API for sealing
> > trusted keys.
> > 
> > This patch implements basic sealing and unsealing functionality for
> > TPM 2.0:
> > 
> > * Seal with a parent key using a 20 byte auth value.
> > * Unseal with a parent key using a 20 byte auth value.
> > 
> > Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@...ux.intel.com>
> > ---
> >  drivers/char/tpm/tpm-interface.c |  76 ++++++++++++
> >  drivers/char/tpm/tpm.h           |  15 ++-
> >  drivers/char/tpm/tpm2-cmd.c      | 250 ++++++++++++++++++++++++++++++++++++++-
> >  include/keys/trusted-type.h      |   2 +-
> >  include/linux/tpm.h              |  26 ++++
> >  5 files changed, 366 insertions(+), 3 deletions(-)
> > 
> 
> This patch adds a lot of code but doesn't use any of it until later
> patches.  This can make using 'git bisect' more difficult because it
> will point to the wrong patches.  If this were my patch series I would
> combine this patch with the later ones that actually start using the
> code.
> 
> [...]

I do agree with you that it'd had been a good idea. Thanks for the
feedback.

> -- 
> - Jeremiah Mahler
> --

/Jarkko
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