That's fine; I wasn't advocating whether reusing the public key should be a 
MAY/SHOULD NOT/MUST NOT, only that the RFC should make an explicit statement 
about it.  Saying that it's in the MUST NOT category is fine...


From: Kampanakis, Panos <[email protected]>
Sent: Monday, January 29, 2024 12:08 PM
To: Scott Fluhrer (sfluhrer) <[email protected]>; [email protected]
Subject: RE: [IPsec] Comments on draft-kampanakis-ml-kem-ikev2


I will also add text about KEM key re-use. But I don't think we should allow it 
for forward secrecy reasons. Why would we let the initiator re-use a KEM public 
key given that ML-KEM Keygen is relatively fast?


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