Matrix with Martin Albrecht and Dan Jones
Security Cryptography Whatever
00:00
The Impossibility of Multi Party Encrypted Group Messages
I've been working on threshold schemes and it seems like anything multi party just gets harder in terms of formal modeling. Do you think there's anything to that? Or is that just sort of like, no, no, we were kind of figuring it out. It's just slightly more novel. So I think there's not that much work there. My guess is the social structure of the groups you're talking about is going to help you. Even if you have some distributed consensus protocol, you often only need to reach that between a bunch of admins. But if you group membership is controlled by five people, then maybe your quadratic protocol is totally fine because I could take this square five
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