[Cryptography] Hohha quantum resistant end-to-end encryption protocol draft

[Nemo]

Bertrand Mollinier Toublet <crypto-metzdowd at bmt-online.org> writes:

> In other words, reusing some of your vocabulary, we start from a PSK
> situation, but the Authenticated Diffie Hellman scheme allows us to go
> up from there to add PFS properties.

Yes, this is a good idea.

And it is not original. ZRTP supports an "auxsecret" to stir some
out-of-band shared key material into the "fancy" Diffie-Hellman
negotiation. See https://tools.ietf.org/html/rfc6189#section-4.3

I made a feature request to add something similar to Signal
(https://community.signalusers.org/t/3469) but nobody cared

 - Nemo