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Security Key
Authentication
Authenticator (platform or roaming) performing public-key challenge-response for authentication.
Definition
A security key is an authenticator that proves possession of a private key by signing a server challenge. It can be a roaming device (USB/NFC/BLE) or a platform authenticator (built into a phone/laptop).
In plain English
Authenticator (platform or roaming) performing public-key challenge-response for authentication.
Why this matters
Why it matters: It provides phishing-resistant authentication and reduces reliance on shared secrets.
Example
Example: Login requires key presence and user verification (PIN/biometric) before signing the challenge.
Apps Using Security Key
Examples of apps that implement or relate to this privacy concept
