7 ms·

What about their signal integration? https://signal.org/blog/whatsapp-complete/ https://signal.org/blog/whatsapp-complete/

• pixelschubsi 23d ago
  The open protocol variant of that is called OMEMO. Same double ratchet and implemented using Signal's library (the same as used by WhatsApp) in many XMPP clients
  • tcfhgj 22d ago
    > the same as used by WhatsApp source? wouldn't that be a license violation?
    • pixelschubsi 22d ago
      WhatsApp paid WhisperSystems (the previous Signal company) for a commercial license. Same as Google. Dual-licensing their encryption protocol library was their main source of income back then. AFAIK, even today you can fetch the WhatsApp Android apk, extract the zip and do a `strings classes*.dex | grep signal` to find class and package names matching the sources in the signal-protocol-java repository in the Signal GitHub.