linux-kernel - Re: [PATCH 1/4] integrity: TPM internel kernel interface

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Date:	Tue, 12 Aug 2008 22:36:36 +0100
From:	Alan Cox <alan@...rguk.ukuu.org.uk>
To:	Kenneth Goldman <kgoldman@...ibm.com>
Cc:	Christoph Hellwig <hch@...radead.org>,
	linux-kernel@...r.kernel.org,
	linux-security-module@...r.kernel.org,
	Mimi Zohar <zohar@...ibm.com>
Subject: Re: [PATCH 1/4] integrity: TPM internel kernel interface

> Being a TCG/TPM person, I can only address the first question.  The
> intent is that the TPM is soldered to the planar/motherboard (the TCG
> uses the phrase "bound to the platform").  I can't imagine
> any manufacturer designing a pluggable TPM.  It would subvert PCR
> measurements and thus attestation, data sealing, etc.

So the security limit of your TPM is a soldering iron .. whoo. I'm not
sure this is actually the case however as the secret of interest is in
the TPM so even if I replaced the TPM the goodies already set up are in
the TPM I just unsoldered surely ?

Alan
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