Richard E. Smith works for Secure Computing Corporation where he provides consulting services in network security to commercial and government organizations, including the National Security Agency. He has also served as principal systems engineer for military network guard systems and the Sidewinder Internet Firewall. He frequently lectures, writes, and conducts seminars on cryptography and computer security. He holds an M.S. and Ph.D. in computer science from the University of Minnesota and a B.S. in engineering from Boston University.