This application example demonstrates how to implement Two-Factor Authentication on a Python Flask application using Authy OneTouch.
Learn more about this code in our interactive code walkthrough.
Create a free Authy account if you haven't already done so and then connect it to your Twilio account.
Create a new Authy application. Be sure to set the OneTouch callback
endpoint to http://your-server-here.com/authy/callback
once you've finished
configuring the app.
To get it up and running quickly, you can deploy this app for free using Heroku:
This project is built using the Flask web framework. For now it only runs on Python 2.7 (not 3.4+).
-
To run the app locally, first clone this repository and
cd
into it. -
Create a new virtual environment.
-
If using vanilla virtualenv:
virtualenv venv source venv/bin/activate
-
If using virtualenvwrapper:
mkvirtualenv authy2fa-flask
-
-
Install the requirements.
pip install -r requirements.txt
-
Copy the
.env_example
file to.env
, and edit it to include your Authy API key -
Run
source .env
to apply the environment variables (or even better, use autoenv) -
Start a local PostgreSQL database and create a database called
2fa_flask
.-
If on a Mac, we recommend using Postgres.app. After installing it, open psql and run
CREATE DATABASE 2fa_flask;
-
If Postgres is already installed locally, you can just run
createdb 2fa_flask
from a terminal
-
-
Run the migrations.
python manage.py db upgrade
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Start the development server.
python manage.py runserver
To actually process OneTouch authentication requests, your development server will need to be publicly accessible. We recommend using ngrok to solve this problem.
Once you have started ngrok, set your Authy app's OneTouch callback URL to use your ngrok hostname, like this:
http://88b37ada.ngrok.io/authy/callback
You can run the tests locally through coverage:
-
Optionally create a separate test database and update your
DATABASE_URL
environment variable if you don't want your development data overwritten. -
Run the tests.
$ coverage run manage.py test
You can then view the results with coverage report
or build an HTML report with coverage html
.
That's it!
- No warranty expressed or implied. Software is as is. Diggity.
- MIT License
- Lovingly crafted by Twilio Developer Education.