register
Registers a new WebAuthn credential (passkey creation) using Apple's AuthenticationServices framework.
Triggers the platform authenticator (Touch ID / Face ID) to create a new secp256r1 passkey. The resulting credential is bound to the configured Relying Party ID and can be used to deploy and operate a smart account.
The challenge bytes are passed directly to the platform authenticator without modification.
Return
WebAuthnRegistrationResult with credential ID, public key, attestation object, transport hints, device type, and backup status
Parameters
The challenge bytes to bind to the credential (typically 32 bytes)
User identifier bytes for the credential (used for discoverable credentials)
Human-readable name displayed in the passkey creation dialog
Throws
if the user dismissed the authentication dialog
if passkeys are not available on this device
if credential creation fails for any other reason