The reference end-to-end encryption engine the iOS and Android apps are held to, and the normative one when the two disagree. X3DH with an ML-KEM-768 hybrid, the Double Ratchet, sealed sender, key ...
A free end-to-end encrypted messenger. Signing up takes no phone number. A relay operator sees ciphertext and routing and holds no key that opens a message, and a client can reach a relay through a...