Writing style
Direct · Journalistic · Technical

Simon Singh traces the long contest between people who conceal messages and those determined to expose them. Moving from ancient Egyptian writing and Arabic cryptography to mechanized codebreaking, the Enigma machine, and secure internet commerce, he explains how codes and ciphers have altered wars, nations, and individual lives. Portraits of influential creators and breakers keep the technical history connected to human motives, while accessible explanations show why each innovation provoked a new method of attack. Later chapters follow the development of public-key cryptography and consider PGP, quantum computing, and quantum cryptography. The book presents secrecy as a continuing intellectual arms race, linking puzzles from the ancient world to the mathematical systems on which modern privacy and communication depend.
Collected’s assessment, not reader ratings. Complexity runs from 1 (least demanding) to 5 (most demanding).
Direct · Journalistic · Technical
Moderate
Cerebral · Earnest · Suspenseful
Chronological nonfiction
Ideas · Information
2 / 5
For the print edition listed above.
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