Explain the essence of basic authorization and how it is implemented in the HTTP protocol.

Basic Authentication is a simple method of authenticating in HTTP, where the client sends the username and password to the server in the request header.

How it works:

1. The client creates a string in the format username:password.
2. This string is encoded in Base64.
3. An Authorization header with the value Basic <encoded_string> is added to the HTTP request.

Example header:

Authorization: Basic dXNlcm5hbWU6cGFzc3dvcmQ=

The server decodes the Base64, retrieves the username and password, verifies them, and decides whether to grant access.

Important:

• Transmitting data in Base64 does not provide encryption, so basic authentication should only be used over HTTPS.
• It is a simple but not the most secure authentication method.