Glacier 3.0 introduces end-to-end (E2E) encrypted voice and video calls.
Media is encrypted end-to-end (E2E) using WebRTC security protocols while in a 1:1 voice and video call.
Each Participant negotiates a separate DTLS/SRTP connection to every other participant. All media published to the call is sent over these secure connections, and is encrypted only at the sender and decrypted only at the receiver.
Glacier does not mediate in the media exchange, which takes place through direct communication among participants. The only exception is when media exchange requires TURN. In that case, a TURN server will blindly relay the encrypted media bits to guarantee connectivity. The TURN server cannot decrypt or manipulate the media.