What is the difference between HTTP and HTTPS?
The Hypertext Transfer Protocol (HTTP) is a protocol or a set of communication rules for communication between client and server. When you visit a website, the browser sends an HTTP request to the web server, which responds with an HTTP response. The web server and browser exchange data such as plain text. In short, the HTTP protocol is the underlying technology that powers network communication. As the name suggests, the secure hypertext transfer protocol (HTTPS) is a more secure version or extension of HTTP. With HTTPS, before transferring data, the browser and server establish a secure and encrypted connection.
How does the HTTP protocol work?
HTTP is an application-level protocol in the Open Systems Interconnection (OSI) network communication model. It defines several types of requests and responses. For example, when you want to view some data from a website, an HTTP GET request is sent. If you want to send some information, such as filling out a contact form, an HTTP PUT request is sent.
Similarly, the server sends various types of HTTP responses in the form of numeric codes and data. Here are some examples:
200: OK
400: Invalid request
404: Resource not found
This request-response communication is generally invisible to users. It is the communication method used by browsers and web servers, so the World Wide Web works consistently for everyone.
How does the HTTPS protocol work?
HTTP transmits unencrypted data, which means that information sent by a browser can be intercepted and read by third parties. It was not an ideal process, so it was extended to HTTPS to add another layer of security to communication. HTTPS combines HTTP requests and responses with SSL and TLS technology.
HTTPS websites must obtain an SSL/TLS certificate from an independent certification authority (CA). These websites share the certificate with the browser before exchanging data to establish trust. The SSL certificate also contains cryptographic information, so web servers and browsers can exchange encrypted or encrypted data. The process works like this:
The user visits an HTTPS website by typing the URL in the https:// format in the browser's address bar.
The browser attempts to verify the authenticity of the site by requesting the server's SSL certificate.
The web server sends the SSL/TLS certificate, which contains a public key, as a response.
The website's SSL certificate proves the identity of the server. Once the browser is satisfied with the certificate, it uses the public key to encrypt and send a message containing a secret session key.
The web server uses its private key to decrypt the message and retrieve the session key. Then it uses the session key to encrypt and send a confirmation message to the browser.
Now, both the browser and web server use the same session key to exchange messages securely.
Learn more about SSL/TSL certificatesĀ»
What is the difference between HTTP/2, HTTP/3, and HTTPS?
The original HTTP version released in 1996-97 was called HTTP/1.1. HTTP/2 and HTTP/3 are updated versions of the same protocol. The data transfer system has been modified to make it more efficient. For example, HTTP/2 exchanges data in binary format instead of text. It also allows servers to proactively transmit responses to client caches instead of waiting for a new HTTP request. HTTP/3 is relatively new but tries to take HTTP/2 a step further. The goal of HTTP/3 is to support real-time streaming and other modern data transfer requirements more efficiently.
HTTPS prioritizes HTTP data security issues. Modern systems use HTTP/2 with SSL/TLS as HTTPS. As HTTP/3 improves, browser and server technology will eventually integrate it into HTTPS as well.
Why choose HTTPS over HTTP?
Later, we will discuss some advantages of HTTPS over HTTP.
Security
HTTP messages are in plain text, which means that unauthorized parties can easily access and read them on the internet. In contrast, HTTPS transmits all data in encrypted form. When users send sensitive data, they can be sure that no third party can intercept it through the network. It is preferable to choose HTTPS to protect potentially sensitive information such as credit card data or customer personal information.
Authority
Search engines generally rank HTTP website content lower than HTTPS web pages because HTTP is less reliable. Customers also prefer HTTPS websites over HTTP. The browser makes the HTTPS connection visible to users by inserting a lock icon in the browser's address bar next to the website's URL. Users prefer HTTPS websites and applications due to these additional security and reliability factors.
Performance and analysis
Web applications HTTPS load faster than HTTP applications. Similarly, HTTPS also monitors referral links better. Referral traffic is traffic to your website from third-party sources such as advertising or backlinks on social media. If you want your analytics software to accurately identify your reliable traffic sources, you need to enable HTTPS.
Is HTTPS setup more expensive than HTTP?
HTTPS requires obtaining and maintaining an SSL/TLS certificate on the server. In the past, most certification authorities charged an annual fee for certificate registration and maintenance. This is no longer the case.
There are many sources to get free SSL certificates. For example, Amazon Web Services (AWS) offers AWS Certificate Management (ACM). ACM provides, manages, and distributes public and private SSL/TLS certificates that can be used with AWS services and your connected internal resources. ACM removes the long manual process of purchasing, uploading, and renewing SSL/TLS certificates.
Summary of differences between HTTP and HTTPS
HTTP
HTTPS
Stands for
Hypertext Transfer Protocol
Secure Hypertext Transfer Protocol
Protocols under