on May 9, 2003
This book is a little out of date and a little too basic. It is for the beginner and is not an advanced text. The best thing that it is short. Because it is so short, it had to be packed densely with information, no wordiness. I've never had enough time to read The Codebreakers book, too big. Here I got informed in minimal time and the book is much less expensive -- it's got a better cost to read ratio and cost to information ratio.
on July 3, 1999
Very well written. This book offers an introduction to "crypto-stuff" such as mono/polyalphabetic substitutions and grille methods. It doesn't go into much of anything else in huge detail, but it offers many methods including "how to build" your own encoding/decoding tools. If you're looking for some fun reading, I highly recommend it. If you're serious about learning though, check out "the code breakers" by kahn.