Using this retro-looking tutorial on Vigenènere cipher for my infosec homework.

Made by a Professor from the Department of Computer Science in Michigan Technological University. I doubt they expected their website would help an underslept student from the Department of System Analysis in Kazan Volga Region Federal University.

It's 2024 - do you know where your post-quantum cryptography is?

Q-day is in 10 years max.