02094oam 2200481 450 991015864580332120190911103516.01-5081-7313-3(OCoLC)967983818(MiFhGG)GVRL07YB(EXLCZ)99371000000101002720160707h20172017 uy 0engurun|---uuuuatxtrdacontentcrdamediacrrdacarrierFamous cryptographers /Jeri FreedmanFirst edition.New York :Rosen Publishing,2017.�20171 online resource (64 pages) color illustrations, portraitsCryptography : code making and code breaking1-5081-7312-5 Includes bibliographical references and index.Polybius : Roman war correspondence -- Blaise de Vigenè̀re : the Vigenè̀re cipher -- Anson Stager : Civil War cryptography -- Agnes Meyer Driscoll, aka Madame X -- Elizabeth Friedman : gangsters and spies -- Alan Turing : solving Enigma -- Whitfield Diffie and Martin Hellman : public-key cryptography.This book tells the stories of individuals who have shaped cryptography. Readers will learn about Polybius and his cipher (the Polybius square), Julius Caesar and his secret military ciphers, diplomat Blaise de Vigen�ere and his polyalphabetic cipher, Anson Stager and Civil War cryptography, cryptanalyst Agnes Meyer Driscoll, codenamed Madame X, who decrypted radio codes for the US government, and more.Cryptography: code making and code breaking.CryptographersBiographyCryptographyHistoryCiphersHistoryCryptographersCryptographyHistory.CiphersHistory.652/.80922BFreedman Jeri1244404MiFhGGMiFhGGBOOK9910158645803321Famous cryptographers2887777UNINA