Comments (6)
I'd also add that just because an authenticator implementation is not currently using an attestation format, does not mean it is deprecated and it could be used in the future.
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fido-u2f
attestation is not deprecated, it will always continue to be used by U2F security keys from before the release of FIDO2. The deprecation of the U2F JavaScript API has no effect on this; these security keys still remain compatible with the WebAuthn API (though not all features, like User Verification and discoverable keys).
I don't know about the other formats, though.
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@emlun Yes, you are correct about fido-u2f
. I apologize if it was misleading. However, as far as I understand, for fido-u2f
there will be no userHandle
, which is mandatory for the usernameless sign-in scenario (If the user was not identified before the authentication ceremony was initiated). Perhaps this point is worth mentioning.
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This is mentioned in ยง2.2.1. Backwards Compatibility with FIDO U2F, and implied by the description of PublicKeyCredential.response.userHandle
:
[...] The authenticator MUST always return a user handle if the allowCredentials option used in the authentication ceremony is empty, and MAY return one otherwise.
Since U2F authenticators must always be used with non-empty allowCredentials
, this implies that they always MAY (and in fact always do) return userHandle: null
.
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Apologies, for fido-u2f
there indeed are instructions about the nuances of its operation. Thank you for the clarification. And what about apple
and android-safetynet
? Is it suitable to mention deprecation for them?
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2023-10-25 WG call: Apple reports they are not comfortable with calling apple
attestation deprecated at this time. Google confirms that SafetyNet attestation is deprecated, but judging by the deprecation timeline, SafetyNet attestation will still be supported in some form until January 2025. The WG feels we should not make any change to the spec so long as the attestation format is being produced by authenticators. We hope to release L3 of the spec well before January 2025 (the WG charter ends in April 2024), so we will not make any change for this in L3.
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Related Issues (20)
- Support for WebDriver BiDi HOT 2
- supplementalPubKeys attestation incompatible with most verification procedures
- Does WebAuthn supports User-Verifying Roaming Authenticators HOT 4
- How does First-factor roaming authenticator registration happens with RP (involving client) HOT 2
- CredentialCreationOptions/mediation not yet defined in CredMan HOT 1
- Authenticator Attestation Response's [[transports]] should be an attribute rather than an internal slot. HOT 4
- Align the order of fields in PublicKeyCredentialDescriptorJSON with PublicKeyCredentialDescriptor HOT 2
- Dictionary members should be ordered lexicographically per Web IDL Standard HOT 3
- Allow conditional mediation flow without username or password field, I.E. from button press HOT 4
- Add support for hinting at verbiage other than "sign in" during authentication HOT 5
- Add support for IDNs and display domain names in Unicode for a more user friendly UX HOT 4
- Add examples for PRF extension HOT 3
- Passkey - Disable authentication with another device HOT 3
- Proposal for password-only authentication using ES256 HOT 10
- [[Create]] should not access the global object directly HOT 1
- Define `TypeError` behavior during `.get()` HOT 2
- Return more nuanced errors HOT 3
- Does Related Origins introduce a need for "Related RP IDs" support in `.get()`? HOT 1
- UTF-8 decode should not be required for response.clientDataJSON and cData HOT 2
- CollectedClientData fields are not ordered correctly and crossOrigin should be required
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