Reverse engineering CRC?

[geremy condra]

On Mon, Mar 15, 2010 at 6:29 AM, Gregory Ewing
<greg.ewing at canterbury.ac.nz> wrote:
> 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:
>
> http://www.cosc.canterbury.ac.nz/greg.ewing/essays/CRC-Reverse-Engineering.html
>
> Thanks for everyone's help,
> Greg

Nice writeup, thanks.

Geremy Condra