Signal Messenger: Speak Freely
signal.org
Say "hello" to a different messaging experience. An unexpected focus on privacy, combined with all of the features you expect.
  • souperk
    1·
    9 months ago

    PQXDH is designed for asynchronous settings where one user (“Bob”) is offline but has published some information to a server. Another user (“Alice”) wants to use that information to send encrypted data to Bob, and also establish a shared secret key for future communication.