Tweet | ## The Mathematics of Secrets: |

Holden begins by looking at substitution ciphers, built by substituting one letter or block of letters for another. Explaining one of the simplest and historically well-known ciphers, the Caesar cipher, Holden establishes the key mathematical idea behind the cipher and discusses how to introduce flexibility and additional notation. Holden goes on to explore polyalphabetic substitution ciphers, transposition ciphers, including one developed by the Spartans, connections between ciphers and computer encryption, stream ciphers, and ciphers involving exponentiation. He also examines public-key ciphers, where the methods used to encrypt messages are public knowledge, and yet, intended recipients are still the only ones who are able to read the message. He concludes with a look at the future of ciphers and where cryptography might be headed. Only basic mathematics up to high school algebra is needed to understand and enjoy the book. With a plethora of historical anecdotes and real-world examples,
"A fascinating tour of the mathematics behind cryptography, showing how its principles underpin the ways that different codes and ciphers operate. . . . While it’s all about maths, [ "For anyone with an interest in cryptography." "Any book on cryptography written for a more-or-less lay audience must inevitably face comparisons to
"Suitable for anyone with a basic understanding of high school math,
| |||||||

### For ebooks:
| |||||||

| |||||||

| |||||||

Questions and comments to: webmaster@press.princeton.edu |

Send me emails about new books in: | |

Popular Science | |

Computer Science | |

Mathematics | |

More Choices |