Experiment 9 – Token Based Authentication using Flask

Objective

Implement token based authentication using Flask and test APIs using Postman.

Technologies Used

• Python
• Flask
• JWT (PyJWT)
• Postman

APIs Implemented

1. Authorization Header

Endpoint: /auth-header
Method: GET

Authentication using Basic Authorization Header.

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2. Custom Header

Endpoint: /custom-header
Method: GET

Authentication using custom headers.

Headers used: X-Username
X-Password

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3. JWT Authentication

Generate Token

Endpoint: /login
Method: POST

Body: { "username":"admin", "password":"1234" }

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Access Protected Route

Endpoint: /jwt-protected
Method: GET

Header: Authorization : Bearer TOKEN

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Steps to Run

1. Install dependencies

pip install flask pyjwt

2. Run server

python app.py

Server runs at:

http://127.0.0.1:5000