Heeey!,If you know what KeyGen is then I have to say something to you.
Here you have a information about KeyGen by Wikipedia
Problems with Keygens
See also: Product activation
Legal issues aside, there are two major issues in using keygens: Product activation and online key verification.
Keys generated with a key generator may not work with software that is used online, including downloading software updates. This is because the user must confirm their serial number every time the software connects to the server, and the key may be invalid for various reasons.
One reason is that the cracker may have misinterpreted the original algorithm, creating a key that was "good enough" to let the software be installed, but not letting all possible future generated keys be valid.
Another reason may be that the software developers only accept keys that they know were distributed with the media during production, or had been issued with an online registration, causing a cryptographically correct key to still be denied.
A third reason could be a secondary unpublished algorithm that is used by the vendor, e.g., to extend the previous example, the characters 0, 7, 9, C, and K are never allowed. The software that confirms the key on the user's machine does not know these numbers and characters are not allowed, and will accept the keygen output, but the online confirmation fails.
Keys for massively multiplayer online games are different; usually each key is uniquely generated by the producer and included with the product, usually in a tamper-proof medium such as a scratch card or tamper-proof envelope. These keys will usually become uniquely linked to a certain game account upon usage and are rendered "useless" by this process. Therefore, MMOGs are not usually subject to piracy.
Keygens may also contain viruses (depending on whom they are downloaded from). When the program is opened, instead of providing a valid key, the program may install harmful software on the computer on which it was installed.
BE CAREFUL!




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(I also do not really, have the patience nor the concintration todo so)





