@TrollDecker @squirrel @Elizafox A quick run-down:

"input" is a list of values that correspond to positions in the "confusion" list.

When you run the Forward() function, it fills the "output" list with the values that the "input" list refers to in "confusion". Then it does some bitwise math on them to generate a new list of values, assigns this to the "input" list, and clears the "output" list.

It does this 256 times.

It then does more bitwise math and converts the result to a string.

@Elizafox @squirrel @TrollDecker It's like: imagine you have a list of numbers from 1-26, corresponding to letters in the alphabet.

The function takes each number in the list, converts it to a letter, does some math to turn it /back/ into a /different/ number from 1-26, and puts it back in the list. It does that 256 times and then returns the sequence of letters that the final list represents.

@noelle @TrollDecker @squirrel @Elizafox Honestly, for most of us it'd be quicker to just brute force the bastard, and there are 4*10^26 combinations so that'd take a little while