Behind the 6-digit code: Building HOTP and TOTP from scratch

Thanks for the read, I learnt something about HOTP/TOTP today.

I would like to know why the clocks are all weird though - the numbers aren't in the right places. Were the images in this blog post "AI" generated?

Nope not AI generated, I have used excalidraw. Only the cover page is AI generated.

Clock drawing was an asset, I didn't really spent time trying to match the time on clock to the time mentioned by the actors.