I'm strongly in favour of Jacob's suggestions in 459.

On Fri, Oct 5, 2018 at 7:17 PM Jacob Hoffman-Andrews <j...@eff.org> wrote:

> Here's my proposal that removes the STAR special-casing in ACME, making
> certificate URLs behave the same way as all other fetchable resources:
> https://github.com/ietf-wg-acme/acme/pull/459.
>
> Sticking STAR concerns into the ACME draft so late in ACME development is
> only going to cause issues. At the point, we need to be locking things down
> and removing unused features, not introducing new fiddly bits for the sake
> of drafts that can easily be implemented as an extension to the main draft.
>
> On 10/05/2018 03:55 PM, Jacob Hoffman-Andrews wrote:
>
> > The removed language is a non-normative statement of fact
>
> You can't introduce a new authentication method in post-Last Call
> revisions, and claim they are non-significant simply because they are not
> formally normative.
>
> > It seems like you're trying to get rid of a better option to maintain
> the appearance architectural purity.
>
> Nope, this is not a matter of architectural purity. Capability URLs are a
> strictly weaker authentication method than the JWS-based POSTs used
> everywhere in the protocol. If you read the doc (
> https://www.w3.org/TR/capability-urls/), it's all about the risks
> involved and how they should only be used as a last resort. The language we
> had up to draft 13 made this very explicit: GETs are not authenticated.
>
> It seems like this was introduced in response to the STAR group requesting
> that final certificates be made GETtable. This was a pretty tenuous claim
> anyhow: If most ACME servers require POST for certificates, STAR-shaped
> clients won't be able to interoperate with them. So if you feel like STAR
> needs some special way to authenticate GETs, with lower security
> requirements than ACME, let's punt that to the STAR spec. Certificate GETs
> in ACME can be a MUST POST like everything else, and STAR can declare a
> "gettable certificate" extension.
>
>
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