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De-Googling TOTP Authenticator Codes
I've been slowly removing Google apps from my life, and one of the last ones left is Authenticator. In this post I look at migrating codes out of Authenticator to a command-line OTP tool, and the steps involved.
Note that the below steps are presented just as I went through them, you may be able to find efficiencies or you may run into troubles that I didn't (especially if you're trying this exclusively on Windows); "your mileage may vary" is apt here. This tool is intelligent enough to extract any number of names and secrets from a migration URL, so you can export all your codes from Authenticator into one giant QR without needing to do each separately. I'm happy to sit with that and not require a password to generate OTPs every time, but if you're interested in adapting the wrapper script to use symmetric encryption to secure the keys, Vivek Gite[2]"Use oathtool Linux command line for 2 step verification (2FA)", Vivek Gite, updated Feb 2025 has a set of scripts which employ gpg for the job.
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