![]() Throughout this exchange, only Bob and Alice can read and understand the encrypted message. The message is now in a readable format and is shown to Alice, and she can be certain Bob sent the message. ![]() Alice receives the encrypted message and decrypts it using her private key and Bob’s public key.On Bob’s side, the server converts the message to a ciphertext ( $#cs4$vxxv!~) and stores it in the database.After Bob selects send, the database receives and encrypts the message using a combination of Alice’s (receiver) public key and Bob’s private key.Bob (sender) types “ Hello” and sends the message to Alice.Let’s walk through each step to see what’s happening: The receiver can only decrypt the sender’s message with the matching private key, which is used to decrypt messages and to verify or sign them.Ĭheck out the diagram below for an example: Public keys are distributed publicly and encrypt the sender’s messages. You can only access the message by decrypting and signing it using a known public key (distributed freely) and a corresponding private key (only known by the owner).Įach user in the application has their own public-private key pair. ![]() E2EE provides security by storing the message in an encrypted form on the server or database running the application. There’s a lot more to consider from a security perspective that isn’t covered here.Įnd-to-end encryption (E2EE) is the process of securing a message from third parties so that only the sender and receiver can access the message. If you want to implement end-to-end encryption in your production app, please consult a security professional first. Note: Before you start, keep in mind that this tutorial is a basic example intended for educational purposes only.
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