py2fa

Py2fa

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 ope
Security & Privacy Authentication
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twofactor-authentication otp totp hotp python
Py2fa alternatives ➤

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

Features

  1. Implements TOTP and HOTP algorithms
  2. Easy integration with Python apps/websites
  3. Utilities for generating/validating tokens
  4. Cryptographic operations handled by library

Pricing

  • Open Source

Pros

Open source

Lightweight and simple to use

Supports major 2FA standards

Active development and maintenance

Cons

Limited to Python only

Minimal documentation

Not many customization options

Official Links

Official Website
https://github.com/cpiehl/py2fa

The Best Py2fa Alternatives

Top Security & Privacy and Authentication and other similar apps like Py2fa

Here are some alternatives to Py2fa:

Google Authenticator icon
Google Authenticator
Daito Authenticator icon
Daito Authenticator
Sentinel Authenticator 2FA icon
Sentinel Authenticator 2FA
Yandex.Key icon
Yandex.Key
Suggest an alternative ❐

Google Authenticator icon

Google Authenticator

Google Authenticator is a software-based authenticator app developed by Google for multi-factor authentication by generating timed one-time passwords. It can be used to enhance the security of user logins to applications and online accounts by requiring users to provide both their regular account password as well as a 6-digit one-time...
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Daito Authenticator icon

Daito Authenticator

Daito Authenticator is a free and open-source two-factor authentication mobile app available for both iOS and Android. It allows users to easily set up two-factor authentication for accounts that support time-based one-time passwords such as GitHub, Google, Dropbox, and more.The app generates secure 6-digit codes that refresh every 30 seconds....
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Sentinel Authenticator 2FA icon

Sentinel Authenticator 2FA

Sentinel Authenticator 2FA is a free, open source two-factor authentication app available for iOS and Android. It allows users to generate time-based one-time passwords (TOTP) for added account security when logging into online services that support 2-step verification.When enabled, the user must enter both their regular login credentials, like username/email...
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Yandex.Key icon

Yandex.Key

Yandex.Key is a cloud-based password manager and encrypted online storage service developed and operated by Yandex, a major Russian technology company. It works across platforms on Windows, macOS, iOS, Android and as a web app.Yandex.Key provides users with a secure digital vault to store sensitive information such as:Passwords for websites...
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