On Sat, Dec 10, 2022 at 09:48:04AM -0700, Laurence Lundblade wrote: > +1 for HPKE-v1-BASE > > Re title the draft "HPKE Base Mode for COSE” or similar because it’s > not a definition of all of HPKE for COSE > > Use a fixed array for the sender info that is tied to HPKE-v1-BASE. > If there becomes a need to change the array, then we’ll use.an > algorithm identifier different from HPKE-v1-BASE. For example, we > could have a different array for HPKE-v1-AUTH (if/when someone gets > around to it and there is actual need for it to be different).
However, parameters with short identifers are not cheap. So if both are to have short parameter identifier, one needs to be able to reuse the same parameter for both. (The reason why my proposal was written in a bit odd way is to enable that sort of reuse. Yes, I realize this is a bit controversal.) And I think HPKE-v1-AUTH would have different array from HPKE-v1-BASE (lacking aead id). -Ilari _______________________________________________ COSE mailing list [email protected] https://www.ietf.org/mailman/listinfo/cose
