The Hash Function Is Taking

The hash function is essentially a way to generate random numbers. In the interactive version of the Sudoku one, you have like if Alice and Bob are standing next to each other, Alice is trying to prove that she has the solution. You can use the output of this hash function to choose your first challenge. And then you respond, you hash the response, then you get a new pseudo random number,. Use that as the challenge for the next input and so on. Eventually you'll have like a long challenge response cycle that you can send off to someone.