How product key works?

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Hi all,

I read somewhere that the product key and licensing of applications is working based on some encrypting algorithms(RC4,SH-1).I have a doubt regarding this, if I installed one software in one system using a product key say "01gh4657", then I try to install the same in another system with same product key means it will show "product key not valid". How the setup is detecting that the product key is already used in some other system ?
-Manuprasad M

Posted 31-Mar-15 0:18am

Manu Prasad

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Afzaal Ahmad Zeeshan 31-Mar-15 6:36am

They store the usage information of product keys on their systems; probably databases.

Manu Prasad 31-Mar-15 6:46am

If I am not used the online activation?

Afzaal Ahmad Zeeshan 31-Mar-15 6:50am

But indirectly you did use some sort of online activation process which led them to this.

King Fisher 31-Mar-15 6:37am

They can catch your system information and what product key you have used while installation.

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CPallini · Answer 1 · 2015-03-31T00:27:00

Solution 1

How does Google work[^]?

Posted 31-Mar-15 0:27am

CPallini

Comments

Manu Prasad 31-Mar-15 6:39am

Already I searched in Google for that, but I have just one doubt. How the same setup detecting the product key is used or not?

Sergey Alexandrovich Kryukov 31-Mar-15 7:33am

Yes, this is how it works, 5ed.
—SA