Codes, Ciphers and Secret Writing
“Codes, Ciphers and Secret Writing” by Martin Gardner, published by Courier Corporation in January 1984, is a 96-page exploration of the art and science of cryptography. This book invites readers to learn about various codes and methods of secret communication that have been utilized since ancient times. Gardner provides insights into the techniques used by spies and highlights famous codes that have influenced historical events, offering a blend of education and entertainment.
Readers will discover a range of cryptographic methods, from simple letter substitutions to complex polyalphabetical ciphers. The book includes practical activities, allowing young cryptanalysts and puzzle enthusiasts to experiment with different coding techniques, including those involving typewriters, playing cards, and even invisible inks. With a focus on engaging games and activities, “Codes, Ciphers and Secret Writing” serves as a resource for anyone interested in the fascinating world of secret writing and communication.
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“A fascinating, challenging book.”―”A.L.A. Booklist
“Learn to use the most important codes and methods of secret communication in use since ancient times. Cipher and decipher codes used by spies. Explore the famous codes that changed the fate of nations and political leaders. And enjoy hours of fun experimenting with cryptography―the science of secret writing.
Beginning with simple letter substitutions and transposition ciphers, world-famous science writer Martin Gardner explains how to break complicated polyalphabetical ciphers and codes worked with grids, squares, triangles, and charts. You’ll learn codes that are keyed to typewriters and telephone dials . . . even codes that use playing cards, knots, and swizzle sticks. Experiment with invisible writing―inks that glow in black light and turn red under heat―and explore the possibilities of sending messages through outer space to unknown worlds.
Using this book, you can solve the historically famous Playfair Cipher used by Australia in World War II, the Pigpen Cipher used by Confederate soldiers during the Civil War, Thomas Jefferson’s Wheel Cipher, the Beaufort system used by the British Royal Navy, codes devised by authors for heroes in literature―Sherlock Holmes, Captain Kidd, and the Shadow. And you will enjoy experimenting with bizarre methods of message sending―the Dot Code, Knot Code, Swizzle Code, and more.
Young cryptanalysts, cipher fans, and puzzlists of all ages will find hours of intrigue and challenge in “Codes, Ciphers and Secret Writing. “”A stimulating must for the intermediate cryptographer.”―”The Kirkus Reviews
“Unabridged Dover (1984) republication of the work originally published by Simon & Schuster, 1972.
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