Replying to Avatar hodlbod

I don't know firsthand, but I believe they encrypt each message for the recipient, hence the scaling issues. They've been working on adopting MLS for 3 years, which will help a lot when it gets done.
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calle 1y ago

encrypted group messages are an unsolved problem as soon as the group becomes too large afaik

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hodlbod 1y ago

That's what MLS is for, it reduces the amount of messages needed from O(n) to O(log(n)). Which is nice, but still doesn't scale as well as O(1) which is what you get with shared keys (at the expense of much worse security).