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Re: project license [message #59991 is a reply to message #59990]

Wed, 23 April 2008 14:54

natha
Messages: 482
Registered: October 2007

Senior Member

On Apr 23, 5:25 pm, Jean H <jghas...@DELTHIS.ucalgary.ANDTHIS.ca>
wrote:
>> If one user wants to crack the license only needs to change the clock
>> of his computer.
>
> to complete my previous post, you can have your program to write the
> date of the last time the software was used. If the current date is
> before the last date, or before the start date, then void the license.
>
> Jean

If I save the date or any other parameter in a sav file this could be
cracked.
Using a large amount of random numbers and a few numbers at known
position that hold the starting date of the
license is a good idea. I think I'll use that !

Similarly I can store the date of the last time the software was used.
Also I could use another kind of "cryptgraphy" but I think this is
more dificult.

Thanks

Bernat

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[Message index]

		Re: project license By: David Fanning on Thu, 24 April 2008 09:18
		Re: project license By: David Fanning on Thu, 24 April 2008 06:47
		Re: project license By: David Fanning on Thu, 24 April 2008 06:41
		Re: project license By: Vince Hradil on Thu, 24 April 2008 06:35
		Re: project license By: b_gom on Wed, 23 April 2008 15:57
		Re: project license By: David Fanning on Wed, 23 April 2008 14:56
		Re: project license By: natha on Wed, 23 April 2008 14:54
		Re: project license By: Jean H. on Wed, 23 April 2008 14:25
		Re: project license By: R.G. Stockwell on Wed, 23 April 2008 14:34
		Re: project license By: natha on Wed, 23 April 2008 14:29
		Re: project license By: Bob[3] on Wed, 23 April 2008 14:09
		Re: project license By: Jean H. on Wed, 23 April 2008 13:42
		Re: project license By: David Fanning on Wed, 23 April 2008 13:54
		Re: project license By: natha on Wed, 23 April 2008 13:46
		Re: project license By: David Fanning on Wed, 23 April 2008 13:20
		Re: project license By: b_gom on Thu, 24 April 2008 10:24

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