![]() ![]() I can't say I recommend my solution, but it works. We look at Base32, QR codes, and the respective RFCs for. This might have been adequate reason to fire me, but I didn't particularly care and I was never caught. How does Authy work Whats HOTP and TOTP Whats multi factor Authentication and Two factor 2FA. I did, and I certainly violated the trust of my employer by doing so. The exported QR codes from authentication apps can be captured by camera, read from images, or read from text files. Ideally, you should therefore never even see your secret, and certainly not confine it to memory (or even worse, write it down). Extract one time password (OTP) secrets from QR codes exported by two-factor authentication (2FA) apps such as 'Google Authenticator'. A correct code in those cases absolutely require physical control over a key. If, however, the secret is properly installed on a yubikey or similar, then it cannot be recovered, ever. Now, I feel the need to emphasize that this is a horrible solution which circumvents the entire purpose of the TOTP-scheme: If someone installs a key logger on your computer, observes what you type, tortures you, or even just browses through your machine if they get access to it, then they will get the secret - just as if it was a regular password, which is basically what the secret in the above case has been reduced to. However, if you want it really simple, then you can even do this interactively in the python shell with available libraries: In : import pyotp As for the one time code, the algorithm for TOTP is fairly simple and can be implemented in C or similar without much hassle. ![]() If you want to get started right away, visit your account settings. TOTP uses a secret (not a key) to generate the 6 digit codes, and those codes change every 30 seconds. You arent required to use it, you can use other programs. My secret was just 32 characters, so it was just another password to remember. Since the very beginning, Cloudflare has offered two-factor authentication with Authy, and starting today we are expanding your options to keep your account safe with Google Authenticator and any Time-based One Time Password (TOTP) app of your choice. You are required to use TOTP, and Google Authenticator is a common application to generate them. punch in the key whenever you need a one time code.The sync only affects the internal time of your Google. To sign in, you can use your verification codes. On the next screen, the app confirms the time is synced. In the top right, select More Time correction for codes Sync now. write a program for TOTP-codes in your favorite language If your code is still incorrect, sync your Android device: On your Android device, open the Google Authenticator app.It wasn't pretty and head of security would have gone ballistic if they got word of it, but fortunately they never did. I was in a similar situation: My employer required TOTP for some purposes and I refused to acquire a smart phone for this. ![]()
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