The Code Book: The Secret History of Codes and Code-breaking [Paperback]

With their inextricable links to history, mystery and war, codes and ciphers offer a rich seam of material for any author. The relative dearth of non-technical books on the subject may be a reflection of its technical foundations, which compel hard decisions about what to include and what to gloss over. Few are better qualified to take on the challenge than Simon Singh, the particle physicist turned science writer whose book Fermat's Last Theorem, recounting the dauntingly complex story behind the proof of this mathematical conjecture, deservedly became a No. 1 bestseller.

The Code Book contains many fascinating accounts of code-breaking in action, from its use in unmasking the Man in the Iron Mask and the defeat of the Nazis to the breaking of a modern cipher system by a world-wide army of amateurs in 1994. It is especially good on the most recent developments, such as quantum cryptology and the thorny civil liberties issues raised by the advent of very secure cipher systems over the Internet. But Singh's mathematical prowess sometimes gets the better of his journalistic instincts, leading to technical descriptions that unnecessarily disrupt the narrative flow. So buy it--and have a shot at the 10,000 pound mystery cipher--but be prepared to skip. --Robert Matthews

'Singh's account combines readability with a more meaty level of technical analysis than any other have seen. His powers of explanation are as dazzling as ever.'

'Singh has the knack of making the frightening world of number theory seem like child's play, there is more than enough here to interest the mathematically squeamish.'

‘A fascinating meander through the centuries; replete with tales of intrigue, political chicanery, military secrecy and academic rivalry.’
The Times

'(Singh tells) these stories with infectious relish. He alternates between explanation of how ciphers are constructed and can be cracked, and tales of the skulduggery surrounding them.'

The Science of Secrecy from Ancient Egypt to Quantum Cryptography

From the best-selling author of Fermat’s Last Theorem, The Code Book is a history of man’s urge to uncover the secrets of codes, from Egyptian puzzles to modern day computer encryptions.

As in Fermat’s Last Theorem, Simon Singh brings life to an anstonishing story of puzzles, codes, languages and riddles that reveals man’s continual pursuit to disguise and uncover, and to work out the secret languages of others.

Codes have influenced events throughout history, both in the stories of those who make them and those who break them. The betrayal of Mary Queen of Scots and the cracking of the enigma code that helped the Allies in World War II are major episodes in a continuing history of cryptography. In addition to stories of intrigue and warfare, Simon Singh also investigates other codes, the unravelling of genes and the rediscovery of ancient languages and most tantalisingly, the Beale ciphers, an unbroken code that could hold the key to a $20 million treasure.

Since humans began writing, they have been communicating in code. This obsession with secrecy has had dramatic effects on the outcome of wars, monarchies and individual lives.

With clear mathematical, linguistic and technological demonstrations of many of the codes, as well as illustrations of some of the remarkable personalities behind them – many courageous, some villainous – The Code Book traces the fascinating development of codes and code-breaking from military espionage in Ancient Greece to modern computer ciphers, to reveal how the remarkable science of cryptography has often changed the course of history.

Amongst many extraordinary examples, Simon Singh relates in detail the story of Mary, Queen of Scots, trapped by her own code and put to death by Elizabeth I; the strange history of the Beale Ciphers, describing the hidden location of a fortune in gold, buried somewhere in Virginia in the nineteenth century and still not found; and the monumental efforts in code-making and code-breaking that influenced the outcomes of the First and Second World Wars.

Now, with the Information Age bringing the possibility of a truly unbreakable code ever nearer, and cryptography one of the major debates of our times, Singh investigates the challenge that technology has brought to personal privacy today.

Dramatic, compelling and remarkably far-reaching, The Code Book will forever alter your view of history, what drives it and how private your last e-mail really was.

Simon Singh is a science journalist and TV producer. Having completed his PhD at Cambridge he worked from 1991 to 1997 at the BBC producing Tomorrow’s World and co-directing the BAFTA award-winning documentary Fermat’s Last Theorem for the Horizon series. In 1997, he published Fermat’s Last Theorem, which was a best-seller in Britain and translated into 22 languages.