Federal Computer Week has put the NSA critique of key recovery on its Web site: http://www.fcw.com/pubs/fcw/1998/0413/web-nsareport-4-14-1998.html See a related FCW article today about it at: http://www.fcw.com/pubs/fcw/1998/0413/web-nsacdt-4-14-1998.html The blacked out portions of the diagrams await decoding.