![]() if anyone has instructions for other OS, you are welcome to contribute. Oathtool -totp -b #YOUR_GOOGLE_AUTH_SECRET calculating the current OTP based on your secret.install OAuth toolkit: (e.g., using Homebrew).the coded string should be something of the form: otpauth://totp/?secret=.Configure authenticator app to get the QR code and scan it (easiest way would probably be with an app on your phone.).Login to Google on your computer and enter your account settings > Signing in to Google > 2-Step Verification (exact directions may change over time.).if you still don't care, read on :) Generating OTP token from your computer Doing it manually are you keeping the QR code or the secret somewhere in your inbox? that kind of nullifies the "2 factor" idea. Of course, there are ways to bypass that as well, but that's way safer. while the "secret" of the 1st step is a password chosen by the user and has all the associated vulnerabilities (and the user is required to ^explicitly^ expose it periodically), the secret of the 2nd step is only stored on the secondary device, so it is exposed only for the initial setup of the process. To wrap it up: code the secret as a QR code to allow transferring the secret to a secondary device easily and without explicitly exposing the secret to the user, and create a utility that calculates a temporary "proof", given the secret and the current time. isn't having the proof equivalent to having the password? no, because each "proof" is time-limited, and only valid for a small time-frame (30 seconds). How do you do it? never ask the user for the password, instead ask for a "proof" the user has the password! but then. The answer is: create a password without ever letting the user knowing it! so what's the point in having another password that can be cracked in the same manner? OTP-based 2-steps authentication - the 2nd step:Ī password created by the user can be cracked in many ways. Below the QR code, choose Try another way. Sign in to your Google Account on the new device. At the top of the browser, enter: g.co/verifyaccount. On a device you’re already signed in on, open a web browser, like Chrome. When you see the QR code, stay on that screen. Generating OTP token from your computer Sign in to your Google Account on the new device.How does it work? motivation (and de-motivation). ![]() Keywords: Google Authenticator app, Automatic date & time, Automcatic time zone, time correction for codes.Follow the instructions here to generate Google 2 step authentication OTP without using your mobile. Then, go to Settings->Privacy->Location Services and set it to Always use for Google Authenticator app.Īpplies to: Google Authenticator app, Two factor authentication Note: Through the Google Authenticator security option, you can also set up an authenticator application of your choice for your mobile device or desktop. Even if the Date & Time is set to Automatic, double toggle it. Note: For iOS users, go to Settings-> General-> Date & Time and set it to Automatic. Ensure that the toggles of Automatic date & time and Automatic time zone are enabled.Method 2-Enabling automatic date, time and time zone: Check whether the Two Factor Authentication is working or not.At the top-right corner, click on the action (three-dot) icon.Open Google Authenticator app on your mobile.Method 1-Syncing time correction for codes: Incorrect date and time in the mobile device.Time correction for codes is out of sync.You have enabled two-factor authentication using Google Authentication but it fails.
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