Thanks Ludwig, On Sat, Jan 11, 2020 at 8:20 AM Seitz Ludwig <ludwig.se...@combitech.se> wrote:
> [snip] > > > > *From:* Ace <ace-boun...@ietf.org> *On Behalf Of *Brian Campbell > > > [snip] > > > > So in -09 the "cnf" Introspection Response Parameter was the following the > syntax of the "cnf" claim from PoP Key Semantics for CWTs > [ID.ietf-ace-cwt-proof-of-possession] and in -10 it's following the syntax > of PoP Key Semantics for JWTs [RFC7800] transitively via > [I-D.ietf-oauth-mtls] reference. I think I understand that the two PoP key > semantics documents are conceptually the same or similar. But I don't know > that the syntax is the same? Figure 5 > <https://tools.ietf.org/html/draft-ietf-ace-oauth-params-10#section-6> is > pointed to for mapping between CBOR and JSON but it only has mappings for > the main top level parameters. Maybe I just don't get it or am missing > something... > > > > [LS] No you are not missing something, I just got sloppy trying to do a > quickfix. > > > > Background: The reason for defining both JSON and CBOR-based interactions > is that you might have a powerful client communicating with a constrained > RS. The client does vanilla OAuth interactions with the AS via the token > endpoint, but is served a CWT and associated ACE parameters (cnf, > ace-profile, …) for interaction with the RS. > > The pop-key should decode to the same binary representation regardless of > whether it came in a JSON or CBOR wrapper. > Okay, so noting that there is cnf content that doesn't decode to a key, I suppose I'll just take it on faith that all the relevant or expected usages involve a key that can be represented in both CBOR and JSON. > -- _CONFIDENTIALITY NOTICE: This email may contain confidential and privileged material for the sole use of the intended recipient(s). Any review, use, distribution or disclosure by others is strictly prohibited. If you have received this communication in error, please notify the sender immediately by e-mail and delete the message and any file attachments from your computer. Thank you._
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