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Micron Document

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</style><div role="note" class="hatnote navigation-not-searchable">This article is about the Simon Singh book. For other uses, see <a href="Codebook_(disambiguation)" class="mw-disambig" title="Codebook (disambiguation)">Codebook (disambiguation)</a>.</div>

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</style><table class="infobox ib-book vcard"><caption class="infobox-title">The Code Book </caption><tbody><tr><td colspan="2" class="infobox-image"><div class="infobox-caption">First edition (UK)</div></td></tr><tr><th scope="row" class="infobox-label">Author</th><td class="infobox-data">Simon Singh</td></tr><tr><th scope="row" class="infobox-label">Language</th><td class="infobox-data">English</td></tr><tr><th scope="row" class="infobox-label">Genre</th><td class="infobox-data">Factual</td></tr><tr><th scope="row" class="infobox-label">Publisher</th><td class="infobox-data"><a href="Fourth_Estate_(imprint)" class="mw-redirect" title="Fourth Estate (imprint)">Fourth Estate</a> (UK)<br><a href="Doubleday_(publisher)" title="Doubleday (publisher)">Doubleday</a> (US)</td></tr><tr><th scope="row" class="infobox-label"><div style="display: inline-block; line-height: 1.2em; padding: .1em 0;">Publication date</div></th><td class="infobox-data">1999</td></tr><tr><th scope="row" class="infobox-label">Publication place</th><td class="infobox-data">United Kingdom</td></tr><tr><th scope="row" class="infobox-label">Pages</th><td class="infobox-data">416 (first edition)</td></tr><tr><th scope="row" class="infobox-label"><a href="ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a></th><td class="infobox-data"><style data-mw-deduplicate="TemplateStyles:r1238218222">

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</style><bdi>978-1-85702-879-9</bdi></td></tr><tr><th scope="row" class="infobox-label"><a href="OCLC_(identifier)" class="mw-redirect" title="OCLC (identifier)"><abbr title="Online Computer Library Center number">OCLC</abbr></a></th><td class="infobox-data"><a rel="nofollow" class="external text" href="https://www.worldcat.org/oclc/59459928">59459928</a></td></tr></tbody></table>

<p><i><b>The Code Book: The Science of Secrecy from Ancient Egypt to Quantum Cryptography</b></i> is a book by <a href="Simon_Singh" title="Simon Singh">Simon Singh</a>, published in 1999 by <a href="Fourth_Estate_(imprint)" class="mw-redirect" title="Fourth Estate (imprint)">Fourth Estate</a> and <a href="Doubleday_(publisher)" title="Doubleday (publisher)">Doubleday</a>.

</p><p><i>The Code Book</i> describes some illustrative highlights in the history of <a href="Cryptography" title="Cryptography">cryptography</a>, drawn from both of its principal branches, <a href="Code" title="Code">codes</a> and <a href="Cipher" title="Cipher">ciphers</a>. Thus the book's title should not be misconstrued as suggesting that the book deals only with codes, and not with ciphers; or that the book is in fact a <a href="Codebook" title="Codebook">codebook</a>.<sup id="cite_ref-1" class="reference"><a href="#cite_note-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup>

</p>

<div class="mw-heading mw-heading2"><h2 id="Contents">Contents</h2></div>

<p><i>The Code Book</i> covers diverse historical topics including the <a href="Man_in_the_Iron_Mask" title="Man in the Iron Mask">Man in the Iron Mask</a>, <a href="Arabic_language" class="mw-redirect" title="Arabic language">Arabic</a> cryptography, <a href="Charles_Babbage" title="Charles Babbage">Charles Babbage</a>, the mechanisation of cryptography, the <a href="Enigma_Machine" class="mw-redirect" title="Enigma Machine">Enigma machine</a>, and the decryption of <a href="Linear_B" title="Linear B">Linear B</a> and other ancient writing systems.<sup id="cite_ref-2" class="reference"><a href="#cite_note-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-3" class="reference"><a href="#cite_note-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup>

</p><p>Later sections cover the development of <a href="Public_key_cryptography" class="mw-redirect" title="Public key cryptography">public-key cryptography</a>. Some of this material is based on interviews with participants, including persons who worked in secret at <a href="GCHQ" title="GCHQ">GCHQ</a>.

</p><p>The book concludes with a discussion of "<a href="Pretty_Good_Privacy" title="Pretty Good Privacy">Pretty Good Privacy</a>" (PGP), <a href="Quantum_computer" class="mw-redirect" title="Quantum computer">quantum computing</a>, and <a href="Quantum_cryptography" title="Quantum cryptography">quantum cryptography</a>.

</p><p>The book announced a "cipher challenge" of a series of ten progressively harder ciphers, with a cash prize of £10,000, which has since been won.<sup id="cite_ref-4" class="reference"><a href="#cite_note-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup>

</p><p>The book is not footnoted but has a "Further Reading" section at the end, organized by chapter.

</p>

<ul><li><a href="Cipher" title="Cipher">Cipher</a></li>

<li><a href="Codebook" title="Codebook">Codebook</a></li></ul>

<div class="mw-heading mw-heading2"><h2 id="References">References</h2></div>

<li id="cite_note-1"><span class="mw-cite-backlink"><b><a href="#cite_ref-1">^</a></b></span> <span class="reference-text">In contemporary <a href="English_language" title="English language">English</a>-language jargon, the word "code" is often used for any sort of secret communication, whether or not that communication is actually performed using a code in the strict sense. Some other languages, e.g., <a href="Polish_language" title="Polish language">Polish</a>, tend to do the opposite and refer to both principal types of <a href="Cryptography" title="Cryptography">cryptography</a> as "cipher", as in "<i><a href="Biuro_Szyfr%C3%B3w" class="mw-redirect" title="Biuro Szyfrów">Biuro Szyfrów</a></i>" ("Cipher Bureau").</span>

</li>

<li id="cite_note-2"><span class="mw-cite-backlink"><b><a href="#cite_ref-2">^</a></b></span> <span class="reference-text"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://simonsingh.net/books/the-code-book/">"Simon Singh website"</a><span class="reference-accessdate">. Retrieved <span class="nowrap">April 14,</span> 2015</span>.</cite></span>

</li>

<li id="cite_note-3"><span class="mw-cite-backlink"><b><a href="#cite_ref-3">^</a></b></span> <span class="reference-text"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://zlibrary.to/dl/the-catcher-in-the-rye-9">"The Catcher in the Rye PDF"</a><span class="reference-accessdate">. Retrieved <span class="nowrap">April 14,</span> 2015</span>.</cite></span>

</li>

<li id="cite_note-4"><span class="mw-cite-backlink"><b><a href="#cite_ref-4">^</a></b></span> <span class="reference-text"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://archive.today/20130222033524/http://simonsingh.net/cryptography/cipher-challenge/">"Cipher Challenge"</a>. <i>simonsingh.net</i>. Archived from <a rel="nofollow" class="external text" href="http://simonsingh.net/cryptography/cipher-challenge">the original</a> on 2013-02-22<span class="reference-accessdate">. Retrieved <span class="nowrap">2017-08-27</span></span>.</cite></span>

</li>

</ol></div>

<div class="mw-heading mw-heading2"><h2 id="Bibliography">Bibliography</h2></div>

<ul><li>"<a rel="nofollow" class="external text" href="http://www.timeshighereducation.co.uk/story.asp?storyCode=157869&sectioncode=1">Of Riddles Wrapped in Enigmas</a>", <a href="Whitfield_Diffie" title="Whitfield Diffie">Whitfield Diffie</a>, <i><a href="The_Times_Higher_Education_Supplement" class="mw-redirect" title="The Times Higher Education Supplement">The Times Higher Education Supplement</a></i>, September 10, 1999, p. 25. Retrieved 2009-02-19.</li>

<li>A critical review of the book: "<a rel="nofollow" class="external text" href="http://www.nku.edu/~christensen/codebookreview.pdf">The Code Book: The Evolution of Secrecy from Mary, Queen of Scots to Quantum Cryptography, reviewed by Jim Reeds</a>", Jim Reeds, <i><a href="Notices_of_the_American_Mathematical_Society" title="Notices of the American Mathematical Society">Notices of the American Mathematical Society</a></i>, vol. 47, no. 3, March 2000, pp. 369–372. Retrieved 2009-02-19. (61 KB PDF).</li></ul>

<div class="mw-heading mw-heading2"><h2 id="External_links">External links</h2></div>

<ul><li><a rel="nofollow" class="external text" href="http://www.simonsingh.net/The-Code-Book">"The Code Book" web page</a> at Simon Singh's site</li>

<li><a rel="nofollow" class="external text" href="https://web.archive.org/web/20001213191500/http://www.codebook.org/">The Code Book Cipher Challenge Solution Page</a>, set up by the solvers of the Ten Cipher Code Challenge in "The Code Book"]</li></ul>

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</style><div id="Works_by_Simon_Singh24" style="font-size:114%;margin:0 4em">Works by <a href="Simon_Singh" title="Simon Singh">Simon Singh</a></div></th></tr><tr><td colspan="2" class="navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em">

<ul><li><i><a href="Fermat's_Last_Theorem_(book)" title="Fermat's Last Theorem (book)">Fermat's Last Theorem</a></i> (1997)</li>

<li><i><a href="Trick_or_Treatment%3F" title="Trick or Treatment?">Trick or Treatment?</a></i> (2008)</li>

<li><i><a href="The_Simpsons_and_Their_Mathematical_Secrets" title="The Simpsons and Their Mathematical Secrets">The Simpsons and Their Mathematical Secrets</a></i> (2013)</li></ul>

</div></td></tr></tbody></table></div></div><div><div class="zim-footer">

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