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How does End-to-End Encryption Work?


End-to-end encryption (E2EE) is a secure method of communication that ensures that only the sender and the intended recipient can read or view the transmitted information. Any intermediaries, like service providers or hackers intercepting the transmission, can't decipher the content. Here's how it works:

1. Key Generation

2. Initiating Communication

  1. Sender’s side: When Alice wants to send a secure message to Bob, she retrieves Bob's public key.

  2. Encryption: Alice's messaging app uses Bob's public key to convert the plain message into encrypted ciphertext.

  3. Transmission: This encrypted message (ciphertext) is then transmitted across the network. Even if a hacker intercepts this message during transmission, they won't be able to decipher it without Bob's private key.

Receiving the Message

  1. Decryption: Once the encrypted message reaches Bob, his device uses his private key to decrypt the message and convert it back to its original plain text form.

  2. Reading: Bob reads the original message sent by Alice.

Secure Deletion

After the message is read (or after a predetermined time), some E2EE systems might delete the decrypted message to ensure that even if someone later gains access to the device, they can't retrieve the message.

Advantages of E2EE

Limitations

In conclusion, end-to-end encryption is a powerful tool in the realm of digital communication, providing a high level of security and privacy. It's employed by various communication platforms today, ensuring that users' messages remain confidential and protected from prying eyes.

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Posted: 2023-08-26
By: dwirch
Viewed: 121 times

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