

Neat, yeah Wikipedia says steam cipher approximate one time pads but can also be completely insecure.
I think it would take one hell of an effort to crack, it would be like 3MB encryption right? Or if they guessed the scheme they could try all mp3s ever torrented XOR’ed in every possible combination.
Idk I think there’s something workable there but I only having a casual knowledge
Also I think OP wanted pen and paper so maybe use a book instead digital files.
So how does generating a one time pad from mutually accessible data fit into this scheme. Is the pad the cipher or the key?
If two people agreed that the pad would be the output of a particular pRNG given the 3rd paragraph of the second article on the third page of that day’s newspaper as a seed.
The attack vector would be shortcomings in the pRNG I guess? Which could result in the possibility of some sort of statistical language attack?
Or the attacker could guess the newspaper text & algorithm.