Ken Ray kray at
Fri Jun 14 13:09:01 EDT 2002

One thing I've always thought about is using a foreign constant in the
algorithm. Something like an reversal of an animal's name (like "noil" for
"lion") that has nothing to do with the company or product would be fed into
the algorithm. It's not something that is likely to be guessed, and it would
be necessary to know in order to hack the algorithm.

Just my $0.02,

Ken Ray
Sons of Thunder Software
Email: kray at
Web Site:

----- Original Message -----
From: "Dreamscape Software" <webmaster at>
To: <use-revolution at>
Sent: Friday, June 14, 2002 12:24 PM
Subject: Re: shareware/demoware

> > Isn't that the whole point?  If you are selling by CC, they have to give
> you their CC number anyway.  What they get back is a
> > code that includes, very clearly, the same CC number by which they made
> their purchase.  You can bet, if it's a valid CC, they
> > are not going to be giving that baby away on a mailing list or PTP!
> Yes, it would make people think twice before giving out their number.  But
> in a lot of cases, the serials that are being traded around the net are
> actual "authentic" serials.  They are generated.  So unless the program is
> tied in with a completely secure 24-hour database of credit card numbers,
> really doesn't do that much for protection.
> It all comes down to the Key.  Crack the key and you've got it.  Whether
> use their Credit Card number, Telephone Number, Social Security Number or
> any other type of doesn't make a difference.  Someone will
> it.
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