JWT Authentication with Python

A simple and straightforward tutorial on how to implement JWT (JSON Web Token) authentication in Python using the PyJWT library.

🚀 Features

• Encode: Create a JWT token from a payload.
• Decode: Verify and decode a JWT token to get the original payload.
• Custom Signing Key: Use your own secret key to sign the tokens.

📋 Prerequisites

Before you begin, ensure you have the following installed:

• Python 3.6+
• pip

⚙️ Installation

1. Clone the repository:

   git clone https://github.com/nemesisrc/jwt-authentication-python.git
   cd jwt-authentication-python

2. Install the required dependencies:

   pip install pyjwt

▶️ Usage

To run the script, simply execute the main.py file:

python main.py

You will see the generated JWT token and the decoded payload printed to the console.

📄 Code Explanation

The main.py script demonstrates the basic functionality of creating and verifying JWT tokens.

• signing_key: A secret key used to sign and verify the JWT tokens. Important: In a real-world application, this should be a much more complex and securely stored secret.
• payload: The data you want to store in the JWT. This can be any information you want to transmit securely.
• headers: Optional headers for the JWT. The alg (algorithm) and typ (token type) are specified here.
• jwt.encode(): This function takes the payload, signing key, and algorithm to create the JWT token.
• jwt.decode()": This function takes the token and the signing key to decode it. It will raise an exception if the token is invalid or the signature doesn't match.

🤝 Contributing

Contributions, issues, and feature requests are welcome! Feel free to check the issues page.

📝 License

This project is licensed under the MIT License - see the LICENSE file for details.