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Break the Code: Cryptography for Beginners

By Bud Johnson
Paperback
$8.99
By Bud Johnson

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Veteran cryptographer's simply and clearly written how-to book provides youngsters 8 and up with all the information needed to decipher 56 secret messages. Funny cartoons, easy-to-follow instructions explain how to break six different codes, including simple letter grouping, reverse trail, shift code, key word code, date shift code and twisted path code. Examples and solutions.

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Science & TechnologyComputersMathematicsComputers - General & MiscellaneousCryptographyComputer Science & CombinatoricsComputer Security