libfido2 provides library functionality and command-line tools to communicate
with a FIDO device over USB, and to verify attestation and assertion signatures.

libfido2 supports the FIDO U2F (CTAP 1) and FIDO 2.0 (CTAP 2) protocols.

WWW: https://developers.yubico.com/libfido2/
WWW: https://github.com/Yubico/libfido2