HTTPS VS HTTP DIFFERENT

 HTTPS

HTTPS (Hypertext Transfer Protocol Secure) is a protocol that provides secure communication over the internet. It is an extension of the standard HTTP protocol, with an additional layer of encryption and authentication.

When a website uses HTTPS, the communication between the user's web browser and the website's server is encrypted, which helps protect the confidentiality and integrity of the data being transmitted. This encryption prevents eavesdropping and tampering by malicious third parties.

Here's a simplified explanation of how HTTPS works:

1. SSL/TLS Handshake: When a user's browser connects to a website over HTTPS, it initiates a secure connection using the SSL (Secure Sockets Layer) or TLS (Transport Layer Security) protocols. These protocols establish a secure session between the browser and the server.

2. Server Authentication: The server presents its digital certificate to the browser during the SSL/TLS handshake. The certificate is issued by a trusted third-party called a Certificate Authority (CA). The browser verifies the certificate to ensure it is valid and trusted. This step establishes the server's identity and ensures that the browser is communicating with the correct website.

3. Encryption: Once the server is authenticated, the browser and server negotiate an encryption algorithm and cryptographic keys. These keys are used to encrypt and decrypt the data transmitted between them. The encryption protects the data from being intercepted and read by unauthorized parties.

4. Secure Data Transfer: With the secure connection established, the browser and server can exchange data over the encrypted channel. The data transmitted between them is encrypted at the sender's end and decrypted at the receiver's end.

By using HTTPS, websites can secure sensitive information such as login credentials, financial transactions, personal data, and more. It helps ensure that the data remains confidential and prevents unauthorized access or tampering.

And HTTP

HTTP (Hypertext Transfer Protocol) is a protocol used for transmitting data over the internet. It is the foundation of communication for the World Wide Web. HTTP defines how clients (such as web browsers) request resources from servers and how servers respond to those requests.

Here's a basic overview of how HTTP works:

1. Client Sends a Request: A client, typically a web browser, sends an HTTP request to a server to retrieve a specific resource, such as a webpage, image, or file. The request includes a method (such as GET, POST, PUT, DELETE) and a Uniform Resource Identifier (URI) that specifies the location of the resource.

2. Server Processes the Request: The server receives the HTTP request and processes it accordingly. It determines the requested resource based on the URI and the requested method. For example, if it's a GET request for a webpage, the server retrieves the webpage from its storage.

3. Server Sends a Response: The server constructs an HTTP response containing the requested resource or the result of the requested action. The response includes a status code indicating the outcome of the request (e.g., 200 for success, 404 for not found, 500 for server error), headers with additional information, and, if applicable, the requested resource itself.

4. Client Receives the Response: The client receives the HTTP response from the server. It parses the response, reads the status code and headers, and processes the response content. For example, if the response is a webpage, the client's web browser renders the HTML and displays it to the user.

HTTP is a stateless protocol, meaning that each request-response cycle is independent and does not retain any knowledge of previous interactions. To maintain user sessions or transmit additional information between requests, cookies or other techniques can be used.

It's worth noting that HTTP is not secure by default and does not provide encryption or authentication. To secure the communication and protect sensitive data, HTTPS (HTTP Secure) is used, which adds encryption and authentication layers using SSL/TLS protocols.