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:

When you visit a Web site and you see the Web address starting with "https://...", you know that the Web site uses HTTPS. If you trust your browser and trust the CA, you can trust the HTTPS communication and exchange private information with the Web site without any security concerns.

For example, if you visit Paypal Web site, you will see the Web address displayed as "https://www.paypal.com/":
HTTPS and PKI

Here are RFC (Request For Comments) documents on HTTPS, HTTP and SSL/TLS: RFC 2818 - HTTP Over TLS, RFC 2616 - Hypertext Transfer Protocol -- HTTP/1.1", RFC 5246 - The Transport Layer Security (TLS) Protocol - Version 1.2".

Last update: 2011.

Table of Contents

 About This Book

 Introduction of PKI (Public Key Infrastructure)

Introduction of HTTPS (Hypertext Transfer Protocol Secure)

What Is HTTPS (Hypertext Transfer Protocol Secure)?

 HTTPS Server Authentication Process

 HTTPS Communication Data Encryption

 Using HTTPS with IE (Internet Explorer) 10

 Using HTTPS with Chrome 40

 Using HTTPS with Firefox 35

 Perl Scripts Communicating with HTTPS Servers

 PHP Scripts Communicating with HTTPS Servers

 Java Programs Communicating with HTTPS Servers

 Certificate Stores and Certificate Console

 .NET Programs Communicating with HTTPS Servers

 CAcert.org - Root CA Offering Free Certificates

 PKI CA Administration - Issuing Certificates

 Digital Signature - Microsoft Word 2007

 Digital Signature - OpenOffice.org 3

 S/MIME and Email Security

 PKI (Public Key Infrastructure) Terminology

 Outdated Tutorials

 References

 PDF Printing Version