What is the difference http and https ???

to know the different websites that use http and https is to look at the address bar in brawser that we are using. Try accessing the page paypal.com. After that, try again in a new vestinel.com Access tab. Is there something different from both the website? If you are the focus of the address bar of the browser, then you will find that when accessing paypal.com protocol used is HTTPS, while vestinel.com using the HTTP protocol. So what is the difference HTTP and HTTPS?



What HTTP and HTTPS

Hypertext Transfer Protocol (HTTP) is a protocol that manages communication between the client and the server. The Client is a web browser or other devices that can access, receive and display web content.
In general, the way of communication between the client and the server is a client makes a request to the server, then the server will send a response to the client. the response is an HTML file that can be displayed in a browser or other data requested by the client. All of these activities are governed by a protocol that is being discussed, namely HTTP.
While the Hypertext Transfer Protocol Secure (HTTPS) is a secure version of HTTP developed by Netscape Communications Corp.

Differences HTTP and HTTPS
As an activist IT, of course, we should be able to explain if someone asks about different HTTP and HTTPS. In this section we will discuss the differences in some aspects, namely:

1. Security of data transmitted
HTTP does not guarantee the security of data transmitted between client and server. While HTTPS ensures the security of data transmitted. Speaking about the security of the data, there are at least three aspects are handled by HTTPS, namely:
- Authentication Server, the authentication server, users are completely convinced that he communicates with the server that he headed.
- Data Confidentiality, data transmitted would not be understood by others, because the transmitted data is encrypted.
- Data Integrity, the transmitted data can not be changed by others, because it will be validated by the message authentication code (MAC).

2. Ports used 
To communicate, the default port 80 when using HTTPS uses port 443.

3. The need for SSL
By default, the protocol used for client-server communication HTTP. While being able to use the HTTPS protocol, we are required to have an SSL certificate. Secure Socket Layer (SSL) is a security technology that makes it possible to encrypt data to be transmitted between client and server. SSL allows us to send important information, such as credit card numbers and login credentials, secure.
Well, from the above, if you understand the difference HTTP and HTTPS?