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[Rats] Re: qualifying "confidential computing" (was: Re: Re: Threat model and properties for remote attestation)

Michael Richardson <mcr+ietf@sandelman.ca> Wed, 19 August 2026 15:57 UTC

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From: Michael Richardson <mcr+ietf@sandelman.ca>
To: Henri Sirkkavaara <hello@vaara.io>, rats <rats@ietf.org>
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Date: Wed, 19 Aug 2026 11:57:09 -0400
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Subject: [Rats] Re: qualifying "confidential computing" (was: Re: Re: Threat model and properties for remote attestation)
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Henri Sirkkavaara <hello@vaara.io> wrote:
    > On privacy, the record does not carry evidence. It carries a
    > digest. evidenceRef.digest pins the normalized evidence and the
    > envelope commits to it under signature, so whether anything identifying
    > exists in the artifact is an operator decision about what goes into the
    > evidence in the first place. The format does not require identifying
    > material and a careless deployment can still put it there.

What is this envelope?
This sounds a bit like SD-CWT?
I'm unclear if there is any integrity for these measurements.


--
Michael Richardson <mcr+IETF@sandelman.ca>   . o O ( IPv6 IøT consulting )
           Sandelman Software Works Inc, Ottawa and Worldwide

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