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by Arathorn 2253 days ago
The challenging bits are:

* How do you handle non-encrypted participants (e.g. people dialling in from the PSTN?)

* Up until this week, you haven't been able to intercept WebRTC streams for doing E2EE if running in-browser. (Zoom however doesn't use WebRTC, so they don't have this excuse).

* Do you have a safe place to store the keys, and manage user identity?