Not at all, I can simply reverse the jump hence effectively breaking into
your program. Even if you put checksum in your programs I'll still be able
to break into it as whole of the decrypting algo. goes with your executable
(I can see the password or the salts in the debugger). Please, remember it's
not worth the effort to protect you program against the crackers. The more
difficult is the algo. the more fun they will get cracking it. Use human
engineering to protect your programs rather than any code. Code is bound to
be broken. A lot of discussion has been done on this forum regarding
cracking/software piracy. You should consult the paper of Mr. Ardrii (I
think you can get it from his web site) and take lesson from the conclusion
:-D no need to reinvent the wheel.
Regards,
Khurram+
----- Original Message -----
From: RedStar <[EMAIL PROTECTED]>
To: Palm Developer Forum <[EMAIL PROTECTED]>
Sent: Monday, July 02, 2001 5:11 PM
Subject: Palm soft guard
> Hello All,
>
> I think about subj and find next solution:
> 1. Soft generated same serial number N1 (ex. rnd). User send this N1 to me
> 2. I convert N1 to N2 (ex. RSA) and send to user.
> 3. User put N2 to Palm
> 4. Soft compare N1 & N2, and if their right - palm unlock
>
> Q:
> 1. This is portect effective?
> 2. What the optimal place, where i can store N1,N2
>
> best regards, RedStar
> Palm Alef System Co. ltd
>
>
>
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