Hi,
I'm trying to setup PIR service for live caller id lookup (in python but based on swift example: https://github.com/apple/live-caller-id-lookup-example). The swift example provides utilities for database setup and encryption, but I can't find any specification about which key is used for database encryption and how the ios system knows about this key in order to be able to construct the PIR requests.
So my question is how does the PIR service communicate the secret key to ios system or vice versa? (specific to the test environment, before onboarding)