libu2f-host: libu2f-host (Yubico 2UF C Library) libu2f-host: libu2f-host: Libu2f-host provide a C library and command-line tool that implements libu2f-host: the host-side of the U2F protocol. libu2f-host: libu2f-host: libu2f-host: libu2f-host: Project URL: https://github.com/Yubico/libu2f-host libu2f-host: libu2f-host: libu2f-host: