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How can I read messages between me and other people if I connect to my account from another device(mobile, other web browser) I don't have the private key in other device? In my server I just store the public key of each user also I store the private key in indexDB I'm using kbpgp to encrypt messages and read them in chat app.

נגסה אספה
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    You don't. That's the entire point- without those private keys you can't read the messages. If you could read the messages on another device, so could anyone else. Its up to you to decide whether the extra security of end to end encryption is worth the loss of convenience of access on multiple devices. – Gabe Sechan Jan 18 '21 at 19:01
  • @GabeSechan can you explain then how whatsapp web work(barebone), according to what they said(messages cannot be read by them). how can I login to whatsapp web and read the message sent from mobile? – נגסה אספה Jan 18 '21 at 20:08
  • Well, I did find this: https://security.stackexchange.com/questions/119552/how-does-end-to-end-encryption-work-with-whatsapp-web But basically sending a message from web to your own device would be easy- just need that public key to be sent to the browser. Encrypt it with that then send it to your device. If you can read messages on web sent from your device previously, then something questionable is going on. – Gabe Sechan Jan 18 '21 at 22:07

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