The hairy issue of end to end encrypted instant messaging

16:40 - 17:15

Talk 1

In XMPP there is a over 14 years of experience with end to end encryption in distributed chat systems. After 4 standards for e2e encryption, we are still not content. So what makes it so hard to come up with a good encryption standard? Well, to name some of the issues:
– what is the threat model e2e encryption should protect against?
– what about the metadata?
– what about audit trails?
– what about archives?
– what about group chats?
– what about multiple devices?
– what about key-verification?
After this talk you will never look at e2e encrypted chats in the same way again.