HTTP and HTTPS Protocol- A Comparison
Hypertext Transfer Protocol (HTTP) is a protocol which is used in networking.
Here’s how it works:
When we type/write any website’s address in our web browser, the browser acts as a client, and the computer acts as a server which has the requested information.
When a client asks/requests for information from the server, it uses HTTP protocol to fulfill the task. After completing the request, the server responds back to the client. This response is in the form of web page which we see just after typing the web address and press ‘Enter’.
Hypertext Transfer Protocol Secure (HTTPS) is a combination of two different protocols. It is more secure way to access the web. It is combination of Hypertext Transfer Protocol (HTTPS) and SSL/TLS protocol. 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. 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.
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- URL begins with “http://”
HTTPS- URL begins with “https://”
HTTP- It uses port 80 for communication
HTTPS- It uses port 443 for communication
HTTP- Operates at Application Layer
HTTPS- Operates at Transport Layer
HTTP- No encryption
HTTPS- Encryption is present
HTTP- No certificates required
HTTPS- Certificates required