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SkullCheck v3.60 Key Generator v1.0, written in 1994 by Danny K. of -=>YuK<=-
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Hello!
It took me about 5 hours to understand all calculations and stuff of the
key registration checks. Then, when I was almost finished with writing the key
generator, I needed a conversion routine. I remembered I had written such a
routine some time ago, so I searched all my key generator sources.
And there! In a very old EastTag key generator, I found all the routines I
needed. But hey... this one really looked like the thing I just wrote!
And yeah... after some inspection, I had to come to the conclusion that I had
worked about 5 hours for nothing! This key registration check is just a
stupid Turbo Pascal Unit which was also used by the author of EastTag.
Hmm... let's inspect some parts of the .DOC file of the EastTag key generator:
>EASTTAG wasn't an easy one to do. It took about 2 hours to completely analyse
>and regenerate the calculations. But it sure was worth the work. This program
>is almost worth registration!
Hmm... I can't believe I ever said that EastTag is worth registration...
But look! Here it only took me 2 hours to check out the registration stuff.
I think I'm losing my experience...
>Anyway, the keyfile has 3 checks in it. I can understand the first 2 of them,
>but the 3rd one is a real mystery. It's just an encrypted number or something
>and has to be in the keyfile in order to work well. This number is 123477789.
>But now... create a file called LAURENCE in the directory of your EASTTAG
>and enter the options menu in the setup program. This number appears again!
>Strange, strange, strange... what does the number mean, and who is Laurence!?
This 'LAURENCE' thing also works for SkullCheck. I think the key registration
unit was written by a guy named Laurence. And if he wants a valid key for
one of the programs which use his unit, he just creates a file called Laurence
and makes his own key with the number showed by the program. Smart guy...
I guess this was it again...
Danny K.