then you can just make a program that makes your own number with those restrictions, and any key that followed those rules would be valid. Check if digit9+digit10 are equal to digit12. 4 -> 8, 7 -> 4 Check if digits 5-8, as a single number, are prime. But if you open up the program and see the following:Ĭheck if digit4 is double that of digit2, and ignore anything above the ones column. If the hackers coded the keygen right, then any code that it generates will pass the formula, so any key will be valid.įor instance, trying to guess what codes are valid is hard. They take that formula, and write a program of their own that makes keys so that formula is fulfilled. Instead of just trying to figure out the formula by guessing, they open the program up (disassemble it) and look at what it's told to do when it's given a key. Now, here's where the hackers are clever. What the program is doing is checking a predetermined formula to see if the key fulfills the formula.

However, when you put the key into the program, it somehow knows if the key is valid or not. The people who make programs try to make it hard to guess which ones are valid and which ones aren't. it's seemingly impossible to see any pattern in that. le_dom said that you acquire a small amount of keys and generate the formula based on those. This program needs a key that has 16 numbers, each one 0 to 9. Alright, for this explanation, let us assume that we have a program that you want to 'try'.

Little Big Planet Keygen