If parties A & B both use WhatsApp with the idea being that the app shouldn’t be able to determine the details of the conversation, how does E2EE prevent this?
My understanding is that it really doesn’t matter if E2EE is supported by the app in such cases. Since the app has access to both parties’ devices, it doesn’t have to read/intercept messages in transit if it can just access on device conversation thread for both, or all parties involved. Am I wrong?
In: 5
> Since the app has access to both parties’ devices…
It isn’t the **app** itself which there is concern about accessing messages. The app isn’t Skynet or some despot sitting in dramatic shadow wringing its hands. The worry is that the app would be sending messages to the WhatsApp server that they can access, and if they can do that then by definition the conversations are not End to End Encrypted!
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