Re: Back to cracking the Signature...

From: James S. Bright <james_at_quarterarcade.com>
Date: Fri Jun 20 2003 - 09:29:48 EDT

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<DIV><FONT face=Arial size=2>Yes, my current working theory is that it starts
with the seed and then runs through a loop and performs various algebraic
expressions on the data as it reads it. It may be similar to a CRC calculation,
but not exactly like it. </FONT></DIV>
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<DIV><FONT face=Arial size=2>The seed that we have was derived from empirical
tests (somewhat a long process, but we've been able to decode signatures up to
17 bytes... almost 18 bytes).&nbsp;A good friend of mine who is an experienced
software archiecture is helping me--when we were initialize analyzing the
initial data he was decoding it quick that I could capture test cases. At any
rate, s</FONT><FONT face=Arial size=2>ince the seed that we're using were
calculated from the raw empirical data, it might not be the actual number in the
code. There are likely other initializations that occur. </FONT></DIV>
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<DIV><FONT face=Arial size=2>It doesn't suprise me that 01 00 00 00 ... 08
doesn't have the same signature as 08 00 00 .. 01.... depends on exactly how the
calculations are done.</FONT></DIV>
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<DIV>JB</DIV>
<DIV><FONT face=Arial size=2></FONT>&nbsp;</DIV>
<DIV>--James Bright<BR><A
href="http://www.QuarterArcade.com">www.QuarterArcade.com</A><BR>Restored Arcade
Games for your Home</DIV>
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Received on Fri Jun 20 08:03:31 2003

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