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FIDO2

Authentication

Two-Factor Authentication (2FA) Passkey WebAuthn Hardware Security Key

Authentication standards combining WebAuthn and CTAP for phishing-resistant public-key auth.

Definition

FIDO2 is an authentication framework that typically uses WebAuthn (web/API) plus CTAP (authenticator protocol) to support public-key credentials via platform and roaming authenticators.

In plain English Authentication standards combining WebAuthn and CTAP for phishing-resistant public-key auth.

Why this matters

Why it matters: It enables strong authentication at scale with reduced credential theft risk.

Example

Example: Employees register a security key; login requires a cryptographic proof rather than a password.