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Reply to Passkeys and device public key
I'm also interested in understanding if iOS, like Android, has implemented the proposed Device-bound Public Key WebAuthn extension (devicePubKey). This is described here: https://security.googleblog.com/2022/10/SecurityofPasskeysintheGooglePasswordManager.html Passkeys on Android support the proposed Device-bound Public Key WebAuthn extension (devicePubKey). If this extension is requested when creating or using passkeys on Android, relying parties will receive two signatures in the result..
Mar ’23