Is there a way to release or generate a secret key when using passkeys? I want to build end-to-end encryption in my app but I also want to deliver a great user experience by leveraging the user's passkey. During authentication I want to also receive a secret that I can use to derive encryption keys.
In the future on the web to do this you can leverage the WebAuthn pseudo-random function (PRF) extension. Is there an alternative to this in Authentication Services?