For those who haven't managed yet to solve the new GCHQ crypto challenge on http://www.gchq.gov.uk/challenge.html I have quickly written up the solution we found yesterday on http://www.cl.cam.ac.uk/~mgk25/gchq-challenge.html As GCHQ is surely able to log and trace accurately who accesses the above URL on our server, it would be best not to look at it if you want to apply and impress their recruiters with finding your own solution. Markus -- Markus G. Kuhn, Computer Laboratory, University of Cambridge, UK Email: mkuhn at acm.org, WWW: <http://www.cl.cam.ac.uk/~mgk25/>
