X448 Key Exchange

[Tim Jones]

> Again, if this gets the green light, I'll be happy to write the initial
> implementation.
>

Given the touchy subject of the lack of Yubikey support for anything other than RSA (multiple patches put forward by the community, all ignored https://bugzilla.mindrot.org/show_bug.cgi?id=2474). I would say that the inner circle are likely to ignore your "initial implementation".