Customer Reviews for

The Code Book: The Science of Secrecy from Ancient Egypt to Quantum Cryptography

Average Rating 4.5
( 31 )
Rating Distribution

5 Star


4 Star


3 Star


2 Star


1 Star


Your Rating:

Your Name: Create a Pen Name or

Barnes & Review Rules

Our reader reviews allow you to share your comments on titles you liked, or didn't, with others. By submitting an online review, you are representing to Barnes & that all information contained in your review is original and accurate in all respects, and that the submission of such content by you and the posting of such content by Barnes & does not and will not violate the rights of any third party. Please follow the rules below to help ensure that your review can be posted.

Reviews by Our Customers Under the Age of 13

We highly value and respect everyone's opinion concerning the titles we offer. However, we cannot allow persons under the age of 13 to have accounts at or to post customer reviews. Please see our Terms of Use for more details.

What to exclude from your review:

Please do not write about reviews, commentary, or information posted on the product page. If you see any errors in the information on the product page, please send us an email.

Reviews should not contain any of the following:

  • - HTML tags, profanity, obscenities, vulgarities, or comments that defame anyone
  • - Time-sensitive information such as tour dates, signings, lectures, etc.
  • - Single-word reviews. Other people will read your review to discover why you liked or didn't like the title. Be descriptive.
  • - Comments focusing on the author or that may ruin the ending for others
  • - Phone numbers, addresses, URLs
  • - Pricing and availability information or alternative ordering information
  • - Advertisements or commercial solicitation


  • - By submitting a review, you grant to Barnes & and its sublicensees the royalty-free, perpetual, irrevocable right and license to use the review in accordance with the Barnes & Terms of Use.
  • - Barnes & reserves the right not to post any review -- particularly those that do not follow the terms and conditions of these Rules. Barnes & also reserves the right to remove any review at any time without notice.
  • - See Terms of Use for other conditions and disclaimers.
Search for Products You'd Like to Recommend

Recommend other products that relate to your review. Just search for them below and share!

Create a Pen Name

Your Pen Name is your unique identity on It will appear on the reviews you write and other website activities. Your Pen Name cannot be edited, changed or deleted once submitted.

Your Pen Name can be any combination of alphanumeric characters (plus - and _), and must be at least two characters long.

Continue Anonymously
Sort by: Showing all of 6 review with 4 star rating   See All Ratings
Page 1 of 1
  • Posted April 16, 2011

    highly recommended

    Fascinating historical and mathematical progression in relation to "codes" and "codebreaking". I enjoyed how he tied in ancient languages. Overall, highly recommended.

    Was this review helpful? Yes  No   Report this review
  • Posted November 12, 2009

    more from this reviewer

    How cipher-men won the wars and were generally awesome

    Quite a good job at making crypto accessible, with fascinating anecdotes on everything from lost civilizations to fainting frenchmen. And, as with Fermat's Last Theorem, Singh has a knack of bringing out the depth and color of the people and crises in espionage and modern tech.

    The book mostly follows wars, and is not shy to report the more gruesome fates befalling those who trusted their spy code tricks. The geniuses and the subterfuge they wreak are actually fun to follow and Singh gently explains how their magic actually worked.

    Criticisms: Some of the claims about perfect security in the last chapter seemed premature. The flow between some chapters is disjointed, but it's entertaining and covers a very broad subject in satisfying depth.

    My day job is modifying security software and it was very cool to read the story behind DH key exchange. DH was completely mind-blowing when I first understood it. Singh put me in the room as the college kids were discovering it. And that was thrilling to me.

    Almost every chapter in this book weaves a good story, connecting you to the protagonists and spectating over their epic battles of mind against mind. Singh has put a lot of time and research into this book and it shows admirably.

    I liked it.

    Was this review helpful? Yes  No   Report this review
  • Anonymous

    Posted January 12, 2007

    Awesome, yet a little confusing.

    The book goes into great detail about the past, present, and future of codes and cryptography. When he talks about the actual process of the different machines and ways to make codes, it gets a little confusing. Great book though.

    Was this review helpful? Yes  No   Report this review
  • Anonymous

    Posted January 2, 2001

    Great Historical Perspective

    The Code Book is an enjoyable read that covers a fairly decent range of history regarding codes and cryptography. However, it is not all encompassing and does not cover all aspects of history or modern innovations. I found the history of Germany's Enigma and the efforts to defeat it quite detailed and very interesting.

    Was this review helpful? Yes  No   Report this review
  • Anonymous

    Posted September 3, 2000

    Very Frank Look at our world and our data, thoughts and ideas

    I work with computers and sensitive data day in and day out. Having been a student of codes and ciphers as a youth, I was reminded sharply of the needs for protection of data in our modern world. My company's customers work with sensitive data that must be shared with their customers and regulatory and public agencies. After reading this book, I foresee a need for process and plant data to be protected by some sort of secure transaction layer.

    Was this review helpful? Yes  No   Report this review
  • Anonymous

    Posted October 27, 2008

    No text was provided for this review.

Sort by: Showing all of 6 review with 4 star rating   See All Ratings
Page 1 of 1