On Jul 14, 2023, at 8:13 AM, Tschofenig, Hannes 
<[email protected]<mailto:[email protected]>> wrote:

Hi Laurence,

the problem is that the enc is currently an opaque blob where the format is 
determined by the implementation of the selected library.
This means that there is zero interoperability between different 
implementations unless they happen to produce the same encoding.

I see this as a problem.

Well, yeah it has to interoperate.

Isn’t enc defined by RFC 9180 and doesn’t that give interop? As long as all 
HPKE libraries produces / consume the same thing… Seems to me that it can be 
something HPKE-specific as long as it interoperates.

LL




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