openSUSE:Leap:15.1 openSUSE Leap 15.1 https://download.opensuse.org/distribution/leap/15.1/repo/oss/ libu2f-host Yubico Universal 2nd Factor (U2F) Host C Library libu2f-host provide a command-line tool that implements the host-side of the U2F protocol. There are APIs to talk to a U2F device and perform the U2F Register and U2F Authenticate operations.