this post was submitted on 29 Aug 2024
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There is no point in encrypting a public group chat since anyone can join and decrypt it anyway.
The secret chats feature isn’t between anyone I believe, it’s between two people. But I don’t actually know for certain because I’ve not looked into it beyond a cursory googling.
That said, you’d be correct in that just like any service out there, the moment you let random people join there’s no level of encryption that can keep your secrets secret.
It works well in Matrix, and you can restrict who joins on that platform.
If you restrict it, then it isn't public. I'm not saying that encrypted group chats are useless. But if it is public and anyone can join anyway, then encryption adds no secrecy.
Right, I'm just saying that other platforms give you the option of E2EE group chats, which makes sense if you know your group will remain fixed to a certain size. For truly public groups, yeah, encryption just adds a lot of processing overhead without much benefit.
I, personally, would prefer a platform that gives me the option rather than doesn't.