Hi Mark, Usama,

On Tue, 22 Jul 2025 at 10:59, Muhammad Usama Sardar
<[email protected]> wrote:
> On 22.07.25 10:35, Mark Novak wrote:

> > 3. A stable relying party authorization policy is essential to robust 
> > deployments.
>
> seems completely irrelevant to what we are doing here.

Mark, I wholeheartedly agree with you, which is why we are working on
the normalisation layer provided by AR4SI/EAR.  I also agree with
Usama that this is irrelevant to the discussion around attested TLS.

> > 4. Introducing a service into a client-server communication tends not to 
> > work.
>
> Where is it coming from? We are not introducing any service. It's a direct 
> client-server connection.

I believe Mark refers to the need for an attestation verifier to be
available at the time the background check is done.

However, this is not a requirement: the peers can exchange attestation
results instead of evidence.

> This is why Intel had to implement DCAP for SGX — a cloud provider would 
> never allow Intel’s attestation service to be a prerequisite for meeting its 
> SLOs. If a Verifier must be always on, always available, universally 
> reachable (so, not even intermittent network outages) and highly performant, 
> the result is a new very expensive, likely dial-tone, service that an 
> enterprise must now maintain. Highly a non-starter.

RA-TLS can't work with attestation results, only evidence.  I believe
that's the reason why DCAP was required.

> > 7. If an organization wants to standardize on some workload identity 
> > standard, such as WIMSE or SPIFFE, the proposal does not specify how it can 
> > do that while also adopting the proposal. Forcing an enterprise to do 
> > things two different ways is a big adoption hurdle.
>
> Implementation detail, irrelevant to the charter.

No one is forcing anyone.  An enterprise will choose the solution that
better fits its requirements and operational constraints.  If aCSR or
a SPIFFE-based solution is "better" according to your evaluation
metrics, that's great!

cheers, t

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