Simon Singh has not only written a fascinating book, he has done it in a way which will engage even those readers who imagine themselves not even mildly interested in the subject. Clearly and methodically, he explains the making and breaking of codes from earliest times to the present day. Using illustrations, examples and a remarkable talent for writing simple explanations of complex concepts, he manages not only to enlighten but also to entertain. This is a book that is not easy to put down. Codemaking and codebreaking have changed the course of history. But perhaps the most remarkable aspect of this book is the fact that it's all true. The following is an excerpt from the opening chapter which demonstrates Mr. Singh's talent for presenting cryptography in a historical context.

"Not for the first time, a life hung on the strength of a cipher."

Simon Singh's Website