WebAuthnFIDO2standardien
WebAuthn and FIDO2 are standards that enable passwordless, phishing-resistant authentication on the web. WebAuthn is a W3C API that lets web applications interact with user authenticators. FIDO2 is an alliance between FIDO and W3C that combines WebAuthn with the Client-to-Authenticator Protocol (CTAP), enabling external authenticators to communicate with a user’s device.
Registration flow: the relying party sends a challenge; the browser forwards it to the authenticator, which
Attestation and privacy: authenticators may provide attestation data about their platform. Privacy controls allow suppressing or
Adoption and ecosystem: WebAuthn is supported by major browsers (Chrome, Firefox, Edge, Safari) and is implemented
Limitations and considerations: recovery after loss, credential revocation, and interoperability with legacy passwords remain considerations. The