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by aeyes
1161 days ago
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Each device has a key, the message is sent multiple times with different keys. > WhatsApp multi-device uses a client-fanout approach, where the WhatsApp client sending the message encrypts and transmits it N number of times to N number of different devices — those in the sender and receiver’s device lists. https://engineering.fb.com/2021/07/14/security/whatsapp-mult... |
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