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One comment “HTTPS encryption.”

  1. admin Says:

    HTTPS encryption is a critical component of modern cybersecurity, protecting our online exchanges from eavesdropping and tampering.

    For IT professionals, understanding the concept of HTTPS encryption is essential, regardless of their specific area of focus.
    1. HTTPS Connection Request: The process begins with your browser requesting a secure connection from a web server, which is the standard initiation of an HTTPS session.

    2. Public Key Transmission: The web server sends its public key to the client’s browser. The public key is used for encrypting information that only the server can decrypt with its corresponding private key.

    3. Session Key Generation: The browser generates a session key for the duration of the session. This session key is used for symmetric encryption, which is faster than asymmetric encryption.

    4. Session Key Encryption: The session key is encrypted with the web server’s public key and sent back to the server. This ensures that only the server can decrypt the session key using its private key.

    5. Switch to Symmetric Encryption: Once the server has decrypted the session key with its private key, both the server and the browser switch to symmetric encryption using the session key. All subsequent data transmitted during the session is encrypted and decrypted with this session key.

    6. Secure Data Transmission: Data is exchanged between the client and server securely using symmetric encryption, which is efficient for the large amount of data typically exchanged in a session.
    Asymmetric to Symmetric Encryption:

    The beauty of HTTPS encryption is its seamless transition from asymmetric (public-private key pair) to symmetric (session key) encryption.

    Asymmetric encryption is computationally expensive, so it is only used for the initial key exchange.

    Once the session key is established, symmetric encryption is used, which is much more efficient.

    This is an accurate representation of the TLS (Transport Layer Security) handshake, which is the protocol that underpins HTTPS.

    The TLS handshake involves other steps as well, such as server authentication with a digital certificate, and optionally client authentication and key exchange, but the infographic captures the essence of the encryption process.

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