28-04-2023, 04:28 PM
Even if one knows the cipher being used then one has to consider the numerous different possible implementations of that cipher to find which one fits. This is a little bit like finding the right permutation or combination. Depending on the type of cipher there may be a small or large or huge number of possible combinations. So even if one knows the type of the cipher finding the correct combination can be very difficult. This seems to be a problem which would require some computational element in order to solve, so as to explore the solution space to find the one solution that fits precisely.