[BasicObject]

Is the Nitrokey supported? I didn't see it.

[jans23]

I understand OpenSSH is going to support the FIDO U2F standard in which case all standard-conform implementations would work, including Nitrokey FIDO U2F devices.

[RawToluene]

Nitrokey start works with openssh and the pkcs11 lib from (IIRC) opensc.

[jans23]

Yes, this works since ages. Here are details: https://www.nitrokey.com/solutions/sichere-administration-vo...