TOTP based Two-Factor Authentication for Passport and Node.js

Passport strategy for Two-factor authenticating with a username, password and TOTP code. This module lets you authenticate using a username, password and TOTP code in your Node.js applications. By plugging into Passport, 2FA TOTP authentication can be easily and unobtrusively integrated into any application or framework that supports Connect-style middleware, including Express. You can use any TOTP code generators to generate one-time passwords, for example Google Authenticator.