You can copy the code (if set up to manually fill) or you can set up the 1Password to autofill, which completely automates the GitHub username/password and 2FA login which is pretty sweet. Here's 1Password once configured with 2FA auth:įigure 5 - Password manager integration lets you keep passwords and 2FA codes in one place You can see that in use in the screen capture at the beginning of the post.Īlternately you can also do this manually. This offers a seamless workflow that can autofill, username/password and 2FA auth code all in one quick automated pass. I use 1Password and it has integrated 2FA. Some password managers also have 2FA integration. If you're setting up on a desktop you can either use a text based Setup code, or if the tool has browser integration it sometimes can pick up a QR code off the current Web page (1Password does this). This is on a phone, so you can use the camera to scan the QR code. Alternately you can manually type in the Setup code.įigure 4 - QR Code capture with a phone camera If you click the Scan button it then brings up a camera view that lets you point at a QR code. Again here's Authy's capture screen:įigure 3 - Capturing a QR code or manually entering a Setup key. To set up a new account or site, you either scan a QR code or you can provide manual entry via a text based code. You can copy this code to the clipboard and then paste it into the application requiring Two Factor Validation code. To give you an idea, here's what Authy looks like on a phone:įigure Figure 2 - An Authenticator app - Authy - running on a phoneĪuthenticators tend to have a list of configured 'accounts' that you choose from, and a detail screen that generates a new validation code that is valid only for a short interval and updates after the interval is up. These apps are interchangeable and you can use any of them to set up accounts/site. Google Authenticator (device only, get on App store).There are many Authenticator apps available. Once installed though, you can use any Authenticator app with any site, so installation is a one time thing. If you haven't used an Authenticator app before, you have to install one first, which can also be annoying to new users. The downside is that Authenticators are still somewhat unconventional for the average computer user, and the process of using them isn't exactly obvious. Other 2FA mechanisms like SMS and phone callbacks require you to use a paid for service to initiate the request, or yet another piece of private information you have to hand over in the case of a second email address or SMS phone number. I prefer Authenticator apps because - outside of the free Authenticator app requirement - they are a fully self-contained solution: you don't need an external service to verify a validation. This post is specific to 2FA with an Authenticator app, but there are other ways to implement 2FA including a second email address, SMS messages or phone callbacks. I'll describe my integration in my own Web Store, so it's somewhat app specific, but the examples I provide are generic enough that you can easily modify them to fit into your particular application scenario.įor reference, here is the implementation I'm going to be discussing:įigure 1 - The entire workflow of two Factor Authentication with an Authenticator App (1Password) Two-Factor Authenticators In this post I'll describe how to to implement Authenticator based verification outside of the context of ASP.NET Identity, so you can add this to just about any solution. As such you still need a primary authentication provider to verify the user first, and you can use 2FA to provide additional security or provide a way to recover an account in case the passwords is lost. Two Factor Authentication is an additional bit of security that you can use on top of an existing authentication system to provide extra security, that can't be easily discovered or stolen as it uses one-time keys. Unlike using Email or SMS for the second piece of validation in 2FA, Authenticator apps don't require you give up another piece of private information or use an external service to verify an existing account. Authenticator based Two Factor Authentication (2FA) using an external app like Authy, Google or Microsoft Authenticator or one of the Two Factor Authentication (2FA) enabled password managers like 1Password are becoming more common in Web applications.
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