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by gilloh
1995 days ago
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How can you guarantee this? And how about received messages? How can you retrieve all your old messages/conversations when you install the app on a new device? Don't they come from WhatsApp servers? Just curious, not doubting that you are actually an ex-WhatsApp employee. |
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I mean, I can't guarantee it. As others have said, it's not impossible that things have changed since I left or will change in the future. But I doubt it — e2e encryption is a big selling point for WA and something that is dear to the company's heart.
> And how about received messages?
It's the same deal — the sender encrypts the message with the the recipient's public key, and the recipient decrypts it with their private key (which was generated locally and never goes over the network).
> How can you retrieve all your old messages/conversations when you install the app on a new device? Don't they come from WhatsApp servers?
No, you can only get old messages from your old device or from a backup that went to the cloud somewhere (e.g. iCloud or Google backup). The messages on your phone are stored locally in a DB, so if you copy that DB to a new phone it'll have the new messages. WhatsApp doesn't store messages — they are only present on WA infra until acknowledged as received by the destination.