In article <4b9e0c1f.9020...@canterbury.ac.nz>, Gregory Ewing <greg.ew...@canterbury.ac.nz> wrote: > >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
Excellent essay! -- Aahz (a...@pythoncraft.com) <*> http://www.pythoncraft.com/ "Many customs in this life persist because they ease friction and promote productivity as a result of universal agreement, and whether they are precisely the optimal choices is much less important." --Henry Spencer -- http://mail.python.org/mailman/listinfo/python-list
