E2EE in lib-jitsi-meet

Hello, I want to ask is there a way at the moment to use our own key for e2ee ?
We have an application which uses lib-jitsi-meet, but the application itself have rooms, chat etc., and some of these rooms are encrypted with a key.
We can make a jitsi call (with lib-jitsi-meet) within any of these rooms and our task is if the room is encrypted, to get its key and when we make a jitsi call to use that key for the jitsi E2EE.

At the moment I see jitsi automatically make keys and provide them between the participants.

@saghul ?