Bagaimana Enkripsi Mengamankan Komunikasi pada Web

For many years, the SSL (Secure Sockets Layer) protocol has been securing web transactions using encryption between your web browser and a web server, protecting you from anybody that might be snooping on the network in the middle.

SSL itself is conceptually quite simple. It begins when the browser requests a secure page (usually https://)

The web server sends its public key with its certificate.


The browser checks that the certificate was issued by a trusted party (usually a trusted root CA), that the certificate is still valid and that the certificate is related to the site contacted.



The browser then uses the public key, to encrypt a random symmetric encryption key and sends it to the server with the encrypted URL required as well as other encrypted http data.



The web server decrypts the symmetric encryption key using its private key and uses the browser’s symmetric key to decrypt its URL and http data.



The web server sends back the requested html document and http data encrypted with the browser’s symmetric key. The browser decrypts the http data and html document using the symmetric key and displays the information.