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Clarify behaviour of duplicate pubKeyCredParams and attestationFormats #2214

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Dec 11, 2024
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Clarify behaviour of duplicate pubKeyCredParams and attestationFormats #2214

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dcf0ddb
Clarify behaviour of duplicate pubKeyCredParams and attestationFormats
emlun Nov 27, 2024
eb13ee1
Use same wording of preference order for attestationFormats as pubKey…
emlun Nov 27, 2024
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4 changes: 3 additions & 1 deletion index.bs
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Expand Up @@ -3512,6 +3512,7 @@ optionally evidence of [=user consent=] to a specific transaction.
: <dfn>pubKeyCredParams</dfn>
:: This member lists the key types and signature algorithms the [=[RP]=] supports,
ordered from most preferred to least preferred.
Duplicates are allowed but effectively ignored.
The [=client=] and [=authenticator=] make a best-effort to create a credential of the most preferred type possible.
If none of the listed types can be created, the {{CredentialsContainer/create()}} operation fails.

Expand Down Expand Up @@ -3553,7 +3554,8 @@ optionally evidence of [=user consent=] to a specific transaction.
: <dfn>attestationFormats</dfn>
:: The [=[RP]=] MAY use this OPTIONAL member to specify a preference regarding the [=attestation=] statement format used by the [=authenticator=].
Values SHOULD be taken from the IANA "WebAuthn Attestation Statement Format Identifiers" registry [[!IANA-WebAuthn-Registries]] established by [[!RFC8809]].
Values are ordered from most preferable to least preferable.
Values are ordered from most preferred to least preferred.
Duplicates are allowed but effectively ignored.
This parameter is advisory and the [=authenticator=] MAY use an attestation statement not enumerated in this parameter.

The default value is the empty list, which indicates no preference.
Expand Down