Re: ANN: django-otp and friends: one-time passwords and trusted agents

I just stumbled on this and it looks absolutely amazing. I do have one request though: can we get a sample project up that uses Google's authenticator (or anything else).

This looks like the best solution for two factor authentication for Django but I don't think many people will know where to start when it comes to using it (myself included).

On Wednesday, September 12, 2012 1:27:26 PM UTC-7, Peter Sagerson wrote:

I recently released a suite of packages to support two-factor authentication in Django by way of one-time passwords.

The core package is django-otp, which defines the framework and provides all of the shared APIs. Integration is possible at several levels, from low-level APIs (devices_for_user(), match_token(), etc.); to an AuthenticationForm subclass; to a replacement for Django's login view and an OTP-enabled admin site. Other niceties include the otp_required decorator, an analog to login_required. This is not an authentication backend: although it depends on django.contrib.auth for modeling purposes, it operates independently of the normal authentication machinery.

A given user may have zero or more OTP devices against which we can verify a one-time password. The core project includes Django apps that implement common devices such as HOTP and TOTP (compatible with Google Authenticator, among others) and static passwords (typically used as backup codes). The former include standard features such as tolerance and drift. Separately, django-otp-yubikey provides support for YubiKey devices (locally or remotely verified). django-otp-twilio provides support for Twilio's SMS service for delivering codes by SMS. Implementing support for additional mechanisms is as simple as subclassing an abstract model class and implementing a verification method (and optionally a challenge method). Raw implementations of HOTP and TOTP are provided for convenience along with a few other generally useful utility functions.

As a companion to these, I've also released django-agent-trust, which uses Django 1.4's signed key APIs to tag user-agents that the user has identified as trustworthy. In other words, this implements the "This is a private/shared computer" option one often sees on sensitive sites. Features include revocation and expiration (both absolute and by inactivity; globally, per-user, and per-agent). django-otp-agents is a project that glues together django-otp and django-agent-trust to assign trust to user-agents by way of two-factor authentication (one of the most common scenarios, it seems).

Documentation: django-otp, django-otp-yubikey, django-otp-twilio, django-agent-trust, django-otp-agents

Bitbucket: django-otp, django-agent-trust

As always, the as-is clause in the BSD license isn't kidding. It's early days for these yet and while everything has been carefully documented and unit-tested, not all of the code has had contact with the real world. Feedback is always welcome. The Google group https://groups.google.com/forum/#!forum/django-otp is available for discussion and questions.

Thanks,

Peter

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