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Home » Visual Basic » Article
Generate License Keys (such as CD keys on Microsoft software)
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| Article by: | Brian Gillham (8/26/2002) |
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| Sponsored by: | FindMyHosting - Web Hosting Search |
| Summary: | This class allows you to generate license keys, such as the CD keys on the case of most Microsoft software |
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| Viewed: 260415 times |
Rating (356 votes): |
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4.5 out of 5 |
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Generate License Keys (such as CD keys on Microsoft software)
Download Now 11Kb
It has come to our attention that many visitors have found this page from a search engine, and
expect to find a whole bunch of pirate licence keys. Let me say from the outset, you won't find them here!
This is a piece of software for VB programmers who want to create a Licence Key for their own programs, before they
allow them out into the world. Sorry guys- no Microsoft hacks here!
This class is loosely based on the one by Phil Fresle at http://www.freevbcode.com/ShowCode.ASP?ID=1639. Phil's class allows you to generate license keys, such as the CD keys on the case of most Microsoft software. The major difference in this implementation is that it includes an expiration date. In addition the KEYCODE is generated on the fly using the Soundex of the Username AND the Date.
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View highlighted Comments
 User Comments on 'Generate License Keys (such as CD keys on Microsoft software)'
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Posted by :
 mad_hatter at 09:58 on Saturday, January 31, 2004
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Sorry if this is not the area to post queries but new to this site! Used the code to successfully generate licence keys but then bought a new computer. Copied all the files across and installed vb.net but now I get an error 'System.Runtime.InteropServices.COMException' occurred in system.windows.forms.dll'
I'm fairly new to .net and would appreciate it if someone can point out what is obviously the numpty's error that I've made!
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Posted by :
leonard_van_onselen at 06:11 on Sunday, October 31, 2004
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I was unable to get the expiry date to work with any date other than the maximum future date possible. Any suggestions?
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Posted by :
BillyColl at 03:51 on Friday, May 12, 2006
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It is not enough to only generate license keys it is necessary to protect them from cracks. In my opinion it's better to use copy protectors. Sometimes they have built-in license generating and managing schemes (example is ExeCryptor from www.strongbit.com )
The main reason is that a license generation/protection has not to be based on a open-source scheme because then it becomes vulnerable.
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Posted by :
TR at 20:43 on Saturday, May 13, 2006
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to BillyColl.
What about using something like openpgp http://www.openpgp.org/ . IT is an open-source encryption scheme.
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