In encrypted rooms, the data is stored in our databases but the encryption keys are stored only on your devices or by yourself. Users can optionally backup an encrypted copy of their keys on the Service to aid recovery if they lose all their keys and devices. This key backup is encrypted by a recovery key that only the user has access to. This means that nobody, even Nitrokey engineers (employees and contractors) can see your message content in our database, and if you lose access to your encryption keys you lose access to your messages forever.</p> <p>We use HTTPS to transfer all data. End-to-end encrypted messaging data is stored encrypted using AES-256, using message keys generated using the Olm and Megolm cryptographic ratchets.</p> <p> <b>