Beyond 64KB Limit of IKEv2 Payloads
Post-Quantum
genua GmbH
ELVIS-PLUS
The maximum Internet Key Exchange Version 2 (IKEv2) payload size is limited to 64KB. This makes IKEv2 not usable for conservative post- quantum cryptosystem whose public-key is larger than 64KB. This document discusses the considerations and defines a mechanism to exchange large post-quantum public keys and signatures in IKEv2.