So far, using the WhatsApp network on your desktop or another device has required the phone to be switched on and connected, but a new beta test is in progress support for multiple devices without the need for a phone to mix. In June interview, WhatsApp CEO Will Cathcart and his boss, Facebook CEO Mark Zuckerberg, commented on the technical challenge of maintaining end-to-end encryption. With blog post today, Cathcart tells more about what has been done behind the scenes to maintain safety.
When an image comparing old and new systems (above) tries to explain in the past, the user’s phone dominated the key, determining its identity and ability to encrypt / decrypt messages. Encrypted synchronization also applies to message history, contact names, and other data, and keys are stored on individual devices.
Initially, the beta will move to a limited group of testers already in WhatsApp’s beta program, while the team says it is working to improve performance and add new features.
We have been working with this for a long time. So far, @WhatsApp has only been available on one device at a time. And desktop and network support only worked by mirroring your phone – which meant your phone had to be turned on and have an active Internet connection.
– Will Cathcart (@wcathcart) July 14, 2021