U2F support in OpenSSH HEAD

[Jordan J]

With regards to the middleware library Damien, was there a reason in
particular you used fido_dev_force_u2f(dev)?

Incidentally, I made that pull request while I as looking about.

On Sun, Nov 3, 2019 at 6:30 PM Jordan J <jordandev678 at gmail.com> wrote:
>
> > That's possible already: at keygen time, the default is to require
> > user presence for signatures but you can overide this by passing the
> > "-x 0" flag. This is currently undocumented, and I'll hopefully soon
> > get around to documenting it and making it accept mnemonic string
> > instead of raw U2F flags.
>
> I can make a quick pull request to update it to be a mnemonic if
> you're interested. I'm looking around and testing the U2F support at
> the moment anyway.