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[Remote CryptoKeys] Relationship to WebAuthn PRF extension? #116

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@estark37

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@estark37

Is there any relationship between the Remote CryptoKeys proposal and the WebAuthn PRF extension? At first glance, my impression is that the WebAuthn PRF extension could be used for some of the same use cases as Remote CryptoKeys, but:

  • One would need to define some way to make the PRF extension output opaque to JS, but still usable with Web Crypto
  • There might be Remote CryptoKeys use cases in which the key is not and cannot be stored on a WebAuth authenticator (e.g. non-FIDO2 smart cards)...?

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