libfido2 is an open source library to support the FIDO2 protocol. FIDO2 is
an open authentication standard that consists of the W3C Web Authentication
specification (WebAuthn API), and the Client to Authentication Protocol
(CTAP). CTAP is an application layer protocol used for communication
between a client (browser) or a platform (operating system) with an external
authentication device (for example the Yubico Security Key).
