[km-fs-pcs] Re: Current use cases
John Mattsson <john.mattsson@ericsson.com> Mon, 20 July 2026 09:42 UTC
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From: John Mattsson <john.mattsson@ericsson.com>
To: Carlos Aguilar Melchor <carlos.aguilar.1998@polytechnique.org>
Thread-Topic: [km-fs-pcs] Current use cases
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Date: Mon, 20 Jul 2026 09:41:56 +0000
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Subject: [km-fs-pcs] Re: Current use cases
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Hi Carlos, I think MLS is a very natural choice for any quantum-resistant group communication system. Since SAKKE is based on pairing-based cryptography and ECCSI is based on elliptic-curve cryptography, both will clearly need to be replaced. MLS is one possible replacement, but I don't have strong opinions. It would, however, change some properties of the system, as MLS is not identity-based. Another possibility would be to use lattice-based identity-based encryption and signature schemes. However, such algorithms have not yet been standardized, and I do not now whether they are mature enough for standardization. If discussed during the meeting I think general quantum-resistant group communication systems might be more interesting to discuss. Cheers, John Preuß Mattsson From: Carlos Aguilar Melchor <carlos.aguilar.1998@polytechnique.org> Date: Monday, 20 July 2026 at 10:29 To: John Mattsson <john.mattsson@ericsson.com> Cc: km-fs-pcs@ietf.org <km-fs-pcs@ietf.org> Subject: Re: [km-fs-pcs] Current use cases Hi John, thx for the presentation, maybe we can discuss about it during it, but in case there is no time here goes one first question. Why does MIKEY-MLS seem to you the natural PQC replacement for MIKEY-SAKKE? I am fully aligned on the fact that MLS is great for any PQC setting, but I was wondering if there was some extra reasons in this specific case. best, Carlos On Sat, Jul 18, 2026 at 7:56 PM John Mattsson <john.mattsson=40ericsson.com@dmarc.ietf.org<mailto:40ericsson.com@dmarc.ietf.org>> wrote: Hi, I prepared the following slides for my use case presentation. I'll upload them tomorrow. Any comments or feedback are welcome. https://emanjon.github.io/share/Use%20Cases%20Preu%C3%9F%20Mattsson.pdf I don't think there is any overlap with SandboxAQ's use case presentation. Cheers, John Preuß Mattsson _______________________________________________ km-fs-pcs mailing list -- km-fs-pcs@ietf.org<mailto:km-fs-pcs@ietf.org> To unsubscribe send an email to km-fs-pcs-leave@ietf.org<mailto:km-fs-pcs-leave@ietf.org>
- [km-fs-pcs] Current use cases John Mattsson
- [km-fs-pcs] Re: Current use cases Carlos Aguilar Melchor
- [km-fs-pcs] Re: Current use cases John Mattsson