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Nick bailey
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Software license protection with NSIS?

How can I use NSIS to enforce some form of copy or license protection for the software being installed?
Is it possible? (eg, limit the number of installations, or some such thing.)

Any ideas, suggestions, etc would be greatly appreciated. Thank you.

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Old Post 04-11-2006 02:51 PM
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goldy1064
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Registered: Jun 2005
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If you had some sort of licensing database that the installer could connect to via internet, then you could only allow n number of installations before it becomes invalidated. If the installer can't connect to the internet, display a warning and then exit the installer.

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goldy1064 is offline Old Post 04-11-2006 04:11 PM
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Afrow UK
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Registered: Nov 2002
From: Shropshire, England

Anything is possible. You just need to find a way to do it with the tools available. Just give it a good thinking.

You could store the number of installations in a temporary file in an unrelated folder, or perhaps better would be to store it in a database online under an IP address or something.

-Stu

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Afrow UK is offline Old Post 04-11-2006 04:11 PM
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Red Wine
Forum King

Registered: Mar 2006
From: Ath. GR

quote:
Anything is possible. You just need to find a way to do it with the tools available. Just give it a good thinking.

That's right Stu! You opened the door!
Please test the attached example. Try to run the installer more than three times.

Attachment: test.zip
This has been downloaded 730 time(s).

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Red Wine is offline Old Post 04-11-2006 07:09 PM
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eyeinthesky43
Junior Member

Registered: May 2005
From:

quote:
Originally posted by Red Wine
That's right Stu! You opened the door!
Please test the attached example. Try to run the installer more than three times.


Your test works correctly and you can't run it after the third time, however if you re-extract the files from the zip you can run it again....

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eyeinthesky43 is offline Old Post 04-11-2006 09:20 PM
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Red Wine
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Registered: Mar 2006
From: Ath. GR

It is most likely that it has bugs. This is a first step on that request, possible could not get deeper and that's the reason I am not providing the code yet.
However, here is a new version, now runs only 3 times, download it and test it.

Attachment: test.02.zip
This has been downloaded 775 time(s).

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Red Wine is offline Old Post 04-11-2006 09:44 PM
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Anders
Major Dude

Registered: Jun 2002
From: N/A

Stuffing something in sys32 is not exactly protection, everything you do on the local system can (and will) get broken (something on a server can get cracked aswell so thats not the point)

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Anders is offline Old Post 04-11-2006 11:15 PM
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Red Wine
Forum King

Registered: Mar 2006
From: Ath. GR

I think the point is a research based on this:

quote:
Anything is possible. You just need to find a way to do it with the tools available. Just give it a good thinking.

Besides the fact that there is not uncracked software on the market, (even if they implement expensive protection schemes), the control of the usage on more than one machines, could be done only by a kind of an activation scheme. Any other protection is stuck on the local machine. The installer is not the "end user's software", is just the container, so the reasonable solution should be a kind of "user name-serial number" protection. Though, stick in "find a way to do it with the tools available", just carry out an experiment. An installer who counts the run times and expires after n times. No doubt that every user on this forum could easily break that scheme. Moreover, who really needs something like this? I think as a subject matter, has a point. With the tools available this is what I can do. In fact all the job is dependent on decrypt dll. And here comes where I end up. Download it and try it if you like. Probably, I'll post the code on wiki for reference.
regards

P.S. even a system snapshot before/after is enough to break it.

Attachment: test.03.zip
This has been downloaded 691 time(s).

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Red Wine is offline Old Post 04-12-2006 12:55 PM
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Red Wine
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Registered: Mar 2006
From: Ath. GR

Just in case someone is really interested the code ia at wiki.
Find it here :-)

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Red Wine is offline Old Post 04-13-2006 08:39 PM
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Anders
Major Dude

Registered: Jun 2002
From: N/A

what about users without write access to $windir and HKLM ?

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Anders is offline Old Post 04-13-2006 09:34 PM
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Red Wine
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Registered: Mar 2006
From: Ath. GR

you need admin rights to install this software, have you ever seen that before? :-)

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Red Wine is offline Old Post 04-13-2006 09:40 PM
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sissy
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Registered: Mar 2006
From:

redwine nice work there, its not something i would use but its good to see away of doing stuff and certainly gives ideas.

thanks.

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Red Wine
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Registered: Mar 2006
From: Ath. GR

quote:
redwine nice work there, its not something i would use but its good to see away of doing stuff and certainly gives ideas.

thanks.

Thank you too! :-)

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Red Wine is offline Old Post 04-14-2006 02:46 PM
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