
This function manipulates the key sequence according to a mathematical algorithm and attempts to match the results to a set of valid solutions. This sequence is typically entered by the user during the installation of computer software, and is then passed to a verification function in the program.

Product keys consist of a series of numbers and/or letters. It certifies that the copy of the program is original. Product key on a Proof of License Certificate of Authenticity for Windows Vista Home PremiumĪ product key, also known as a software key, serial key or activation key, is a specific software-based key for a computer program.
