What is User Verification in WebAuthn?

User Verification in WebAuthn refers to the process by which an authenticator confirms a user's identity during the authentication ceremonies. This process is crucial for ensuring that the individual presenting the credential is the same one who registered it. Key aspects of User Verification include:

• Authorization Gestures: May involve PIN codes, biometric recognition, or password entry.
• Security and Integrity: Ensures that the user controls the credential's private key, without revealing their identity to the Relying Party.
• Rate Limiting: Implements protection against brute force attacks by limiting failed authentication attempts.

For more details, we recommend taking a look at our recent blog post about WebAuthn User Verification & User Presence for Passkeys.

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User Verification in WebAuthn plays a significant role in differentiating users and maintaining the security integrity of authentication processes. It is an essential component for Relying Parties to authenticate users securely without concrete identification.

• Process and Modalities: Involves checking whether the user is authorized to use the authenticator. This could be via biometrics, PINs, passwords, etc.
• Privacy and Security Considerations: While it doesn't provide concrete user identification, it ensures the same user is consistently performing the authentication ceremonies.
• Incorporation into Authentication Flow: User Verification criteria can be set by Relying Parties in the AuthenticatorSelectionCriteria to specify their requirements regarding this feature.

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User Verification authenticates the user by verifying their identity through authorization gestures like biometrics or PINs, ensuring the user controlling the private key is authorized.

It enhances security by confirming the legitimacy of the user engaging in the authentication process, protecting against unauthorized access.

Yes, User Verification can involve various methods like biometric recognition, PIN entry, or password usage, depending on the authenticator's capabilities.

User Presence confirms physical interaction with the authenticator, while User Verification authenticates the user's identity through methods like PINs or biometrics.