Just because they can't be cracked publicly, doesn't mean that there isn't a way to do it. There could be any number of weaknesses in any algorithm that mean th

Just because they can't be cracked publicly, doesn't mean that there isn't a way to do it. There could be any number of weaknesses in any algorithm that mean that the computation time can be drastically reduced. WEP is a prime example, which you should probably be familiar with.