A friend of mine called my attention to two interesting articles on cryptography in the March 2000 Notices of the American Mathematical Society: A review by Jim Reeds of Simon Singh's "The Code Book" which takes the author to task for a large number inaccuracies. http://www.ams.org/notices/200003/rev-reeds.pdf And a survey article on DES by Susan Landau that includes succinct technical summaries of differential and linear cryptanalysis. http://www.ams.org/notices/200003/fea-landau.pdf Arnold Reinhold