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Use oathtool Linux command line for 2 step verification (2FA)
- war1025 6y agoI've been very resistant to set up two factor authentication since I often don't have my phone with me and dislike having to wait for sms codes. The other day I was forced to enable 2fa for one of my bank accounts, which led me on a journey to find if I could generate these codes from my computer. Turns out it's just a standardized algorithm that combines an initial token with the current time. That means you don't need a special app from Google or whoever else. There is a small utility `oathtool` [1] that you can use from the command line to generate the correct code using the form: `oathtool -b --totp "<secret token>"` From there, I integrated that into pass [2] using an extension to generate the codes as needed. There is actually an existing extension [3] for otp codes in pass, but I just wrote a much simpler one line script that just pulls the token out of pass, runs it through oathtool, and copies it to the clipboard. Anyway, I thought this was really neat and wanted to share. [1] https://www.nongnu.org/oath-toolkit/ https://www.nongnu.org/oath-toolkit/ [2] https://www.passwordstore.org/ https://www.passwordstore.org/ [3] https://github.com/tadfisher/pass-otp#readme https://github.com/tadfisher/pass-otp#readme