From mboxrd@z Thu Jan  1 00:00:00 1970
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From: David Woodhouse <dwmw2 at infradead.org>
Subject: Re: [tpm2] Conflicting TPM2 engines and storage formats
Date: Thu, 04 Oct 2018 17:17:08 +0100
Message-ID: <a768b98c169cb0688b3358a3645cf927b5710ee9.camel@infradead.org>
In-Reply-To: 9F48E1A823B03B4790B7E6E69430724D0142677E1C@EXCH2010B.sit.fraunhofer.de
List-ID: <tpm2@lists.01.org>
To: tpm2@lists.01.org

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FWIW I have the GnuTLS code also working, including with EC keys (and I
think I know how to tell GnuTLS not to ask me to do SHA512). I should
be able to adjust it to conform to whatever consensus we reach.

cf. https://tools.ietf.org/html/draft-mavrogiannopoulos-tpmuri-01


On Thu, 2018-10-04 at 16:04 +0000, Fuchs, Andreas wrote:
> Should we try to setup a wiki or markdown to start converging into a sing=
le form ?
> I think we can also easily set NODA for the primary, because they have to=
 auth value anyways.
> =

> @James: how do you handle the key-ids ? Allways assume them to be files ?
> I have a PR for persistent TPM keys, where all key ids starting with 0x a=
re interpreted as TPM keys.
> For the future I'll also want to reference FAPI keys (path-like format).
> Thus, any clues on how to handle things consistently here ?
> =

> tpm2-tss-engine will propably not support policies from your format then,=
 but wait until FAPI (with integrated policy engine) is available.
> ________________________________________
> From: David Woodhouse [dwmw2(a)infradead.org]
> Sent: Wednesday, October 03, 2018 22:47
> To: James Bottomley; Fuchs, Andreas; tpm2(a)lists.01.org; Nikos Mavrogian=
nopoulos
> Subject: Re: [tpm2] Conflicting TPM2 engines and storage formats
> =

> On Wed, 2018-10-03 at 11:35 +0100, David Woodhouse wrote:
> > =

> > =

> > Full patch below, for reference. Don't heckle too hard; it exists
> > mostly to document the current incompatibilities. I'll let the two of
> > you come to an agreement on the correct way to resolve them, while I
> > throw together some GnuTLS code to use the same PEM files.
> =

> OK... OpenConnect now supports both OpenSSL engines, and I've thrown
> together some GnuTLS code cribbing from tpm2-tss-engine, implementing a
> gnutls_privkey_t with some caveats (RSA only, PKCS#1 padding only,
> no auth, no policy, only the default parent, ...).
> =

> http://git.infradead.org/users/dwmw2/openconnect.git/blob/tpm2:/gnutls_tp=
m2_esys.c
> http://git.infradead.org/users/dwmw2/openconnect.git/blob/tpm2:/gnutls_tp=
m2.c
> =

> I'd love *not* to have to fix all those caveats, and for this to live
> in a library somewhere instead. :)


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