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010   $a1-5081-7313-3
035   $a(OCoLC)967983818
035   $a(MiFhGG)GVRL07YB
035   $a(EXLCZ)993710000001010027
100   $a20160707h20172017  uy             0
101 0 $aeng
135   $aurun|---uuuua
181   $ctxt$2rdacontent
182   $cc$2rdamedia
183   $acr$2rdacarrier
200 10$aFamous cryptographers /$fJeri Freedman
205   $aFirst edition.
210  1$aNew York :$cRosen Publishing,$d2017.
210  4$d?2017
215   $a1 online resource (64 pages) $ccolor illustrations, portraits
225 1 $aCryptography : code making and code breaking
311   $a1-5081-7312-5 
320   $aIncludes bibliographical references and index.
327   $aPolybius : Roman war correspondence -- Blaise de Vigene??re : the Vigene??re 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.
330   $aThis book tells the stories of individuals who have shaped cryptography. Readers will learn about Polybius and his cipher (the Polybius square), Julius Caesar and his secret military ciphers, diplomat Blaise de Vigen?ere and his polyalphabetic cipher, Anson Stager and Civil War cryptography, cryptanalyst Agnes Meyer Driscoll, codenamed Madame X, who decrypted radio codes for the US government, and more.
410  0$aCryptography: code making and code breaking.
606   $aCryptographers$vBiography
606   $aCryptography$xHistory
606   $aCiphers$xHistory
615  0$aCryptographers
615  0$aCryptography$xHistory.
615  0$aCiphers$xHistory.
676   $a652/.80922
676   $aB
700   $aFreedman$b Jeri$01244404
801  0$bMiFhGG
801  1$bMiFhGG
906   $aBOOK
912   $a9910158645803321
996   $aFamous cryptographers$92887777
997   $aUNINA