Short brief of JWT

JWT (JSON Web Token) is a compact and secure way to transmit information between parties as a JSON object. It is commonly used for authentication and authorization in web applications.

Key Features:

• Structure: Consists of three parts – Header, Payload, and Signature (encoded as Base64).

• Authentication: Used for secure login sessions (e.g., in APIs).

• Stateless: No need to store sessions on the server.

• Secure: Uses cryptographic signing (HMAC or RSA) to prevent tampering.

How It Works:

1. User logs in → Server generates a JWT.

2. Token is sent to the client and stored (e.g., in local storage or cookies).

3. Client includes the token in requests (usually in the Authorization header).

4. Server verifies the token and processes the request if valid.