This is what you will need when getting one from a dealership or locksmith (the owner of the vehicle must do it) the vin #, a drivers license, a current insurance card with the owners name or title to car. They need proof that you actually own that car before they will cut a key. Some keys need to be programmed to the car, so they will need the actual car.
The people who can make your car keys are the local dealership who sells your vehicles model. They can make the key by using the original one but if it lost, then they will have to ask for vehicle identification number to check the driver's side board. Alternatively, you can consult a locksmith company in your area to help you duplicate the key.