The Code Book: The Secrets Behind Codebreaking

I liked the history and stories associated with cryptography in this book. It's a good read to find out about the processes of geniuses to secure a message. Completely out of box thinking by them I would say. Overall interesting book, nicely written.

Interesting for all ages....

This is essentially "The Code Book" minus a few photographs. A very detailed and logical description of the various ciphers used over the centuries and the clever techniques adopted in decrypting them. It explains for the first time in the public domain the UK contribution to the science of modern cryptography and gives credit to those involved who would otherwise have gone unrecognised for their revolutionary discoveries.Very well written and very readable for the interested, intelligent layman.

Absolutely fabulous book, if you like cracking codes/ciphers/puzzles, now my expertise has gone up at least 3 levels, and much more enjoyment too, well written in simple easy to understand language

Very good book to read about cryptology in Second World War (Europe, not Pacific). It is focus in the Enigma cipher and how it was broken. The good thing about it, it talks about the Polish contribution and not only about the British final unscramble of the cipher. Enjoyable.

Great book. I bought this for my son who is into computer security.

A very easy to read book, ideal for year 7 onwards. It explains why codes are necessary, provides a lot of history about how they were used, covers the Enigma machine, the development of RSA coding, and touches on quantum coding.