First, congratulations to the entire DESChall effort for a job well done!
Allow me to be the first to mention that there is a serious effort to
break 56-bit RC5 already underway at http://rc5.distributed.net.
If you're wondering what you should do with all your new-found idle CPU
cycles, we could certainly use them!
-David McNett
nugget@slacker.com
(If brute force doesn't work, you're just not using enough)