Oh, I almost missed that little part at the end with the sprintf...

   DWORD generated_check=(rand()<<16) | rand();
   char gcheck[64];
   sprintf(gcheck, "%x", generated_check);
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My C, as I said, is marginal, but if this is doing what I think it's doing, ...

   $gcheck = printf "%x", ((rand() << 16) | rand());
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I'm assuming here that the C << operator is a left shift just like in Perl, but that's a wild guess. I'm also assuming that rand with no args in C does the same thing as in Perl, which is also a guess. Like I said, my knowledge of C leaves something to be desired. I know what the Perl code does. (It prints "0" every time.) I'm guessing at the C code. Probably guessing wrong.

$;=sub{$/};@;=map{my($a,$b)=($_,$;);$;=sub{$a.$b->()}}
split//,".rekcah lreP rehtona tsuJ";$\=$ ;->();print$/
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