Integrating Passkey Authentication in a Python Flask App

This repository demonstrates how to add passkey login functionality to your Flask backend and React frontend using the Hanko Passkey API. Passkey authentication is a secure and user-friendly alternative to traditional password-based authentication, providing a seamless login experience for users.

For a detailed tutorial on implementing passkey login in your Python Flask app, refer to our blog post: Integrate passkeys into your Python Flask app

Prerequisites

Before you begin, ensure you have the following:

• Python installed (version 3.0.0 or later)
• Node.js installed (version 20.0.0 or later)
• Hanko Passkey API key and tenant ID from Hanko Cloud

Note: You'll need to create a Passkey Project on Hanko Cloud with the App URL http://localhost:5173. See our docs to learn how to setup a passkey project.

Getting started

1. Clone the repository

git clone https://github.com/teamhanko/passkeys-python.git

2. Set up environment variables

Create a .env file in the python-backend directory and add the following environment variables:

PASSKEY_API_KEY=your-hanko-passkey-api-key
PASSKEY_TENANT_ID=your-hanko-passkey-tenant-id

Replace your-hanko-passkey-api-key and your-hanko-passkey-tenant-id with your actual Hanko Passkey API key and tenant ID.

Frontend

1. Navigate to the frontend directory:

cd react-frontend

2. Install the frontend dependencies using your preferred package manager (e.g., npm, pnpm, yarn, or bun). For this project, we've used pnpm:

pnpm install

3. Start the frontend development server:

pnpm dev

Backend

1. Navigate to the backend directory:

cd python-backend

2. Install the backend dependencies using pip:

pip install -r requirements.txt

3. Start the backend server:

flask run --port=8000

Usage

1. Start the application:

   • Ensure that both the frontend and backend servers are running.

   • Access the application by navigating to http://localhost:5173 in your web browser.

2. Log in with a pre-configured user: Navigate to login page, login with one of the pre-configured users.

    {
        "id": "b3fbbdbd-6bb5-4558-9055-3b54a9469629",
        "email": "john.doe@example.com",
        "password": "password123",
    },
    {
        "id": "22c81b3d-1e7d-4a72-a6b0-ad946e0c0965",
        "email": "sergio_mq@example.com",
        "password": "very_secure_password",
    },
    {
        "id": "55c81b3d-1e7d-4a72-a6b0-ad946e0c0965",
        "email": "ab@g.com",
        "password": "123",
    }

3. Register a passkey:

   • After logging in, register a passkey for the logged-in user.

4. Log out:

   • After the passkey registration is successful, log out of the application.

5. Login with with a passkey

   • On the login page, choose sign in with a passkey option to authenticate using a passkey.

Support

Feel free to reach out to us on Discord if you get into any issues.

License

This project is licensed under the MIT License.