Corey Bonnell writes:

>RFC 5019 leverages GET requests to improve cacheability [1]. Given the
>performance benefits of implementing RFC 5019, this is likely why the BRs
>mandate that CAs must support HTTP GET for their responders.

Ah, right, and since 5019 removes the replay-protection nonces it would make
the whole thing cacheable while non-5019 OCSP with nonces wouldn't be.  The
reason I brought it up is that SCEP has run into problems with GET, see the
note at https://datatracker.ietf.org/doc/html/rfc8894.html#section-4.1, which
are typically very hard to diagnose because of the conditions under which they
occur.

Peter.

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