Py2fa

py2fa: Open-Source Python 2FA Library

py2fa is an open-source Python library for implementing two-factor authentication (2FA). It supports time-based one-time passwords (TOTP) and HMAC-based one-time passwords (HOTP). py2fa makes it easy to add 2FA to Python applications and websites by handling the cryptographic operations and providing utilities for generating/validating tokens.

What is Py2fa?

py2fa is an open-source Python library that enables developers to easily add two-factor authentication (2FA) to applications and websites. It provides utilities for generating and validating one-time passwords used in 2FA systems.

Some key features of py2fa include:

• Support for time-based one-time passwords (TOTP) using HMAC-SHA1 - the standard used by Google Authenticator and similar apps
• Support for counter-based HMAC one-time passwords (HOTP)
• QR code generation for easy enrollment of authenticator apps
• Utilities for generating secrets, tokens, validating OTPs, etc.
• Customizable token parameters such as length, valid window, hash algorithm
• Compatible with Google Authenticator and other standard 2FA apps
• Pure Python implementation that runs anywhere Python can

By handling the cryptographic operations and token generation/verification, py2fa makes it easy for developers to add 2FA to new or existing applications with just a few lines of code. It can be used to add a second layer of security on top of username/password login for better account protection.

Overall, py2fa provides a simple and flexible Python API for implementing two-factor authentication across various kinds of applications such as web apps, APIs, command-line tools, and more.

Py2fa Features

Official Links