Reverse engineering CRC?

Gabriel Genellina gagsl-py2 at
Tue Mar 16 07:16:54 CET 2010

En Mon, 15 Mar 2010 07:29:51 -0300, Gregory Ewing  
<greg.ewing at> escribió:

> I've solved the problem now.
> It turned out to be a very standard CRC algorithm, complicated
> by the presence of a few extra bytes of data being checked that
> didn't appear explicitly in the file anywhere.
> In the process I developed some very general techniques for
> solving this kind of problem, which I've written about here
> if anyone's interested:

A good solution to an interesting problem - and very nicely explained too!

Gabriel Genellina

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