Alan DeKok <[email protected]> wrote: > On Jul 9, 2025, at 1:08 AM, tirumal reddy <[email protected]> wrote: >> The draft >> https://datatracker.ietf.org/doc/draft-reddy-emu-pqc-eap-tls/ proposes >> enhancements to EAP-TLS and EAP-TTLS to incorporate PQC mechanisms. It >> also addresses challenges related to large certificate sizes and long >> certificate chains, and provides recommendations for integrating PQC >> algorithms into EAP-TLS and EAP-TTLS deployments.
> I won 't speak to the PQC issues, but I do have other comments.
> The proposed URLs are of the form
> /.well-known/est/eapservercertchain
> /.well-known/est/eapclientcertchain
> I would suggest separating those out into subdirectories:
> /.well-known/est/eap/server/cert/chain
EST says that /.well-known/est/FOOBAR is already a thing, and that it refers
to some kind of specific purpose CA. So if a client needs a specific
application certificate, that it would use this.
I think that it hasn't been used much in the field, but I could be completely
uninformed here. So I like the more descriptive URL, but it might conflict.
RFC8995 initially created an EST registry, to which it added to.
Then it changed it's mind and moved to /.well-known/brski for everything.
(very late)
I was actually looking for the EST registry on IANA.org yesterday, but I
think that IANA withdrew that.
> The main benefit I see of this proposal is the removal of the need to
> exchange large certificate chains. That behavior is historical. There
> have been various small attempts to address it over the years. This is
> the first proposal I've seen which is practical.
> What happens when the chain is modified. Are the clients and servers
> supposed to cache the chains? Doing so would help with performance,
> but it could also affect the ability to update the chains.
I will have to go read this document to understand how the specific
certificiate chain is identitied.
--
Michael Richardson <[email protected]> . o O ( IPv6 IøT consulting )
Sandelman Software Works Inc, Ottawa and Worldwide
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