https://celabs.eu/tags/hpke/Recent content in HPKE on CE LabsHugoen-usFri, 31 Jul 2026 00:00:00 +0000https://celabs.eu/blog/pq-hpke/Fri, 31 Jul 2026 00:00:00 +0000https://celabs.eu/blog/pq-hpke/<p>The IETF is working on <a href="https://datatracker.ietf.org/doc/html/draft-ietf-hpke-pq-05" target="_blank" rel="noopener noreferrer">post-quantum security for HPKE</a> , the scheme used in protocols like TLS ECH, MLS, and Oblivious HTTP. We&rsquo;ve implemented the draft: it runs today in hpke-rs, part of <a href="https://github.com/celabshq/libcrux" target="_blank" rel="noopener noreferrer">libcrux</a> , and you can try it live in the demo further down this post. This post covers what changes on the way to post-quantum HPKE, and why the transition may not be a drop-in.</p>