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I want to create an android app which reads inbox as well as whatsapp messages. I want to make a backup kind of thing. Though there is option for doing so in whatsapp. But I want to read the messages and then back them up from my app. I got to know that whatsapp stores messages in encrypted format in the file system. So can anyone please tell me how to read that encrypted file.
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When you receive a message on WhatsApp, turn on Airplane mode on your smartphone. This will turn off Wi-Fi and Mobile data on your device. You can now go to WhatsApp and read chat messages. This way the sender will not be notified or shown any blue ticks if you have Read Receipt turned on.
For any message that you send, you'll be able to see a message info screen, displaying the details of when your message was delivered, read, or played by the recipient. Open an individual or group chat. Tap and hold your sent message.
WhatsApp makes a chat backup everyday at 4 AM on your SD Card. This is a single database encrypted with an AES key. Since it is on the external storage, your app can read it if you have access to the external storage.
You can easily decrypt this database (there is a paper available on this online).
However, this will only give you updated chats once every 24 hours.
If you want more realtime updates, your device has to be rooted, and you will need a completely new parser, as on the internal storage the chats are stored in more than one database.
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