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Re: [Rats] Requesting a Nonce from a Verifier

Carl Wallace <carl@redhoundsoftware.com> Thu, 07 March 2024 14:51 UTC

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Date: Thu, 07 Mar 2024 09:51:42 -0500
From: Carl Wallace <carl@redhoundsoftware.com>
To: Thomas Fossati <tho.ietf@gmail.com>, "Smith, Ned" <ned.smith@intel.com>
CC: Henk Birkholz <henk.birkholz@ietf.contact>, "hannes.tschofenig=40gmx.net@dmarc.ietf.org" <hannes.tschofenig=40gmx.net@dmarc.ietf.org>, "rats@ietf.org" <rats@ietf.org>
Message-ID: <08510523-D6C2-4F31-B6D5-F3DF1E995A77@redhoundsoftware.com>
Thread-Topic: [Rats] Requesting a Nonce from a Verifier
References: <02c501da6987$d2d64490$7882cdb0$@gmx.net> <ecf9ac86-82f2-80b7-160a-bdde42387ef0@ietf.contact> <011b01da6d5e$e30e4e90$a92aebb0$@gmx.net> <a69d9a50-68e6-80c2-e400-f565da746d79@ietf.contact> <5E4A8C93-FC03-4780-9F41-F0CCA559B513@intel.com> <CAObGJnNPc_x691C0s7dEA_ccB0z6mQnN_xo5Ub8JOaD8PBkqgQ@mail.gmail.com>
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Subject: Re: [Rats] Requesting a Nonce from a Verifier
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Inline...

On 3/6/24, 11:36 PM, "RATS on behalf of Thomas Fossati" <rats-bounces@ietf.org <mailto:rats-bounces@ietf.org> on behalf of tho.ietf@gmail.com <mailto:tho.ietf@gmail.com>> wrote:


On Wed, Mar 6, 2024 at 5:54 PM Smith, Ned <ned.smith@intel.com <mailto:ned.smith@intel.com>> wrote:
> I'm not sure I understand Hanne's use case. Is the CA doubling as the RATS Verifier?


No, the CA is the RP. The CA trusts one or more verifiers.


>If not, why does one CA need attestation results from multiple Verifiers


I guess it is to support devices that produce composite evidence.

[CW] Or just different types of devices, i.e., iOS devices, TPMs, Android devices, etc.

<snip>

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