Add support for credential backup flags #378
Merged
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What
Add ability to access the
backup_eligibility
andbackup_state
flags in the authenticator data.Introduces the methods
PublicKeyCredential#backup_eligible?
andPublicKeyCredential#backed_up?
to access them.Why
Level 3 of the draft adds this flags to the Authenticator Data: https://w3c.github.io/webauthn/#sctn-credential-backup. Those flags can be used to get information about credential's backup eligibility and current backup state. With the introduction of multi-device FIDO credentials, this information can be useful for Relying Parties. According to the documentation: