this post was submitted on 26 Jul 2023
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Last time I checked (which has been a while admittedly) they used their central server for key exchange, meaning the whole encryption is compromised.
I know it was bullshit when it first launched, but they completely rebuilt the message protocol later on. Shit, now you've got me worried, time to do research.
Edit: Nah, it looks like it uses a perfectly valid key exchange algorithm. Maybe it goes via a WhatsApp server, but you shouldn't care because the algorithm is interception-proof.