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shareware techniques : looking for algorithmes

Hi,

        I wrote some days ago a question regarding shareware techniques and I was
answered several web sites where I found advice and so on. But the point is
that I'm a beginner so, I would like to learn algorithms or techniques
(with delphi source) in order to know how to crypt/decrypt or how to store
the datas, how to make a keygen an so on. COuld u help me?

Thaks a lot

 

Re:shareware techniques : looking for algorithmes


Quote
>         I wrote some days ago a question regarding shareware
> techniques and I was answered several web sites where I found advice
> and so on. But the point is
> that I'm a beginner so, I would like to learn algorithms or techniques
> (with delphi source) in order to know how to crypt/decrypt or how to
> store the datas, how to make a keygen an so on. COuld u help me?

> Thaks a lot

Yes, but you have to use assembler for real crypt,
and the code has to be spreaded into whole program,
becourse in other case it's too easy to crack it.

About keys:
it can be very simple like it was for Microsoft products
(modulo of sum of all digits must be 0)
or you can use user name to make it.

But, in any case - if your program is realy interesting,
it will be cracked in several days! :)

Regards,
Anatoly

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