ssh-u2f

u2f with ssh

SSH U2F

hardware keys with ssh!

compile

install Yubico/libfido2

build openssh/openssh-portable with -with-security-key-builtin passed to ./configure

generate key

notes:

• ed25519-sk support is apperently exotic? at least my yubikey 5 s don't support it
• SSH_SK_PROVIDER should not be set

ssh-keygen -t ecdsa-sk

use

login as usual, you should be prompted to touch key