∟What Is HTTPS (Hypertext Transfer Protocol Secure)?
This section describes what is HTTPS (Hypertext Transfer Protocol Secure) - A communication protocol that uses the HTTP and the SSL/TLS protocols to provide encrypted communication and secure identification of a Web server.
What Is HTTPS (Hypertext Transfer Protocol Secure)?
HTTPS is a communication protocol that uses the HTTP (Hypertext Transfer Protocol)
and the SSL/TLS (Secure Sockets Layer/Transport Layer Security) protocols
to provide encrypted communication and secure identification of a Web server.
HTTPS has two important security related elements:
Web server authentication - The browser ensures the identity of the Web server by validation
the server's certificate against the certificate of the CA (Certificate Authority).
Communication privacy - The browser uses the public key included in the server's certificate
to encrypt a secret key to server. All data exchanged between the server and the browser will be encrypted
with the secret key.
When you visit a Website and you see the Web address starting with "https://...", you know that
the Website uses HTTPS. If you trust your browser and trust the CA, you can trust the HTTPS communication
and exchange private information with the Website without any security concerns.
For example, if you visit Paypal Website, you will see the Web address displayed as "https://www.paypal.com/":