Keygen - Keygen A keygen (truncation of "key generator") is a small program that will generate a key or serial/registration number for a piece of software. It is typically used as an adjunct to software piracy. The advantage of using a keygen (as opposed to just finding a serial on the web) is that the generated key will be unique, (as it is generated on the spot using the same methods as the software vendor) and not traceable or in use by the legitimate owner. These are usually written by cryptology enthusiasts..
Serial number - serial numbers can be recorded and stolen goods can be identified. Many computer programs come with serial numbers, often called "CD keys," and the installers often require the user to enter a valid serial number to continue. These numbers are verified using a certain algorithm to avoid usage of counterfeit keys. Some warez organizations supply lists of known valid serial numbers. Others will often develop a "keygen"; a program that creates a random serial number by running the installer's verification algorithm in reverse, fooling it into allowing the user to install the software without a valid licence. Serial numbers also help track down counterfeit currency, because in some countries each banknote has a unique serial number. See also: unique identifier.
