Rollercoaster: Communicating Efficiently and Anonymously in Large Groups
Interesting goals ...<p>&gt; apps such as WhatsApp and Signal and billions of people around the world have the contents of their message protected against strong adversaries. However, while the message contents are encrypted, their metadata still leaks sensitive information<p>AFAIK Signal already protects metadata and does group chats. What does Rollercoaster add?<p>(I don&#x27;t want to turn this into another thread about Signal. I&#x27;d hope we can focus on what Rollercoaster does.)