What is defference between HTTP and HTTPS

What is difference between HTTP and HTTPS protocol

                A lot of people end up getting confused when they see two different URL's one as HTTP and other as HTTPS . Security is an important issue on the internet. Understanding the difference between HTTP and HTTPS is very important to internet users. Before knowing the difference between these two protocols you should know about HTTP and HTTP.

HTTP (Hypertext Transfer  protocol  secure)

ð  Hypertext Transfer Protocol ( HTTP ) is a protocol used in networking.it defines a set of rules for transferring files like text,graphics images, sound, video and other  multimedia files on the world wide web.

ð  The major part of the success that world wide web has achieved can be attributed to the effectiveness of hyper-text transfer protocol (http). Its actual purpose is to provide a way to publish and retrieve HTML pages.

ð  HTTP is also called a 'Stateless protocol' because each exe command is executed independently.When you type any web address in your web browser, your browser acts as a client, and the computer having the requested information acts as a server.

ð  When client requests for any information from the server, it uses HTTP protocol to do so. The server responds back to the client after the request completes. The response comes in the form of web page which you see just after typing the web address and press “Enter”.

ð  HTTP protocol connects to TCP port 80.

HTTPS (Hypertext Transfer  protocol  over secure socket layer)

ð  HTTPS is used to indicate that the connection is secure HTTP connection.

ð  It is a version of HTTP which was developed by Netscape,to incorporate encryption into web browsing.

ð  Hypertext Transfer Protocol Secure ( HTTPS ) is a combination of two different protocols.It is more secure way to sending request to server from a client, also the communication is purely encrypted which means no one can know what you are looking for. This kind of communication is used for accessing those websites where security is required.

ð  Banking websites, payment gateway, emails ( Gmail offers HTTPS by default in Chrome browser ), and corporate sector websites are some great examples where HTTPS protocols are used.

ð  For HTTPS connection, public key trusted and signed certificate is required for the server. These certificate comes either free or it costs few dollars depends on the signing authority. There is one other method for distributing certificates. Site admin creates certificates and loads in the browser of users. Now when user requests information to the web server, his identity can be  verified easily.

Here are some major differences between HTTP and HTTPS:

HTTP	HTTPS
URL begins with “http://”	URL begins with “https://”
It uses port 80 for communication	It uses port 443 for communication
Unsecured	Secured
Operates at Application layer	Operates at Transport layer
No encryption	Encryption is Present
No Certificates required	Certificates Required