I think I identified the attack to solve this challenge and now I try to implement the needed functions to do so. For the big number calculations I'm using InfInt, so I'm restricted to integer values. Tests of my functions with small examples give the correct results. My calculated symetric key is wrong and with my previous calculated values the key has to be a floating point number.
My questions are, is the symetric key an integer or a floating point number?
Can this challege be solved without big floating point numbers, only using big integer?
Thanks and regards