Beyond 64KB Limit of IKEv2 Payload

Document Type Expired Internet-Draft (individual)
Authors C. Tjhai  , Tobias Heider  , Valery Smyslov 
Last updated 2021-05-03 (latest revision 2020-10-30)
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


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 describes the mechanisms and considerations to exchange such large key-establishment data in IKEv2.


C. Tjhai (
Tobias Heider (
Valery Smyslov (

(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)