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Cryptanalysis : a Study of Ciphers and Their Solution.

Author: Helen F Gaines
Publisher: Newburyport : Dover Publications, 2014.
Edition/Format:   eBook : Document : EnglishView all editions and formats
Summary:
Thorough, systematic introduction to serious cryptography, especially strong in modern forms of cipher solution used by experts. Nihilist, grille, U.S. Army, key-phrase, multiple-alphabet, Gronsfeld, Porta, Beaufort, periodic ciphers, and more. Simple and advanced methods. 166 specimens to solve - with solutions.
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Genre/Form: Electronic books
Additional Physical Format: Print version:
Gaines, Helen F.
Cryptanalysis : A Study of Ciphers and Their Solution.
Newburyport : Dover Publications, ©2014
Material Type: Document, Internet resource
Document Type: Internet Resource, Computer File
All Authors / Contributors: Helen F Gaines
ISBN: 9780486800592 0486800598
OCLC Number: 1058349572
Description: 1 online resource (525 pages)
Contents: Cover; Title; Copyright; Dedication; PREFACE; Contents; I. GENERAL INFORMATION; II. CONCEALMENT DEVICES; III. TRANSPOSITION TYPES; IV. GEOMETRICAL TYPES- THE NIHILIST TRANSPOSITION; V. GEOMETRICAL TYPES- THE TURNING GRILLE; VI. IRREGULAR TYPES- COLUMNAR TRANSPOSITION .; VII. GENERAL METHODS- MULTIPLE ANAGRAMMING, ETC; VIII. SUBSTITUTION TYPES; IX. SIMPLE SUBSTITUTION- FUNDAMENTALS; X. THE CONSONANT-LINE SHORT CUT; A METHOD FOR ATTACKING DIFFICULT CASES (BY GEORGE C. LAMB); XI. SIMPLE SUBSTITUTION WITH COMPLEXITIES; XII. MULTIPLE-ALPHABET CIPHERS- THE VIGENèRE. XIII. THE GRONSFELD, PORTA, AND BEAUFORT CIPHERSXIV. THE KASISKI METHOD FOR PERIODIC CIPHERS; XV. MISCELLANEOUS PHASES OF VIGENèRE DECRYPTMENT; XVI. AUTO-ENCIPHERMENT; XVII. SOME PERIODIC NUMBER-CIPHERS; XVIII. PERIODIC CIPHERS WITH MIXED ALPHABETS; XIX. POLYALPHABETICAL ENCIPHERMENT APPLIED BY GROUPS; XX. VIGENÈRE WITH KEY-PROGRESSION; XXI. POLYGRAM SUBSTITUTION- THE PLAYFAIR CIPHER.; XXII. HIGHLIGHTS OF FRACTIONAL SUBSTITUTION; XXIII. INVESTIGATING THE UNKNOWN CIPHER; APPENDIX; ENGLISH FREQUENCY AND SEQUENCE DATA; COMPARATIVE TABLE OF SINGLE-LETTER FREQUENCIES. CHART SHOWING NORMAL CONTACT PERCENTAGES (BY F.R. CARTER)CHART SHOWING FREQUENCIES OF ENGLISH DIGRAMS (BY O. PHELPS MEAKER); SOME FOREIGN LANGUAGE DATA; BIBLIOGRAPHY (BY W.D. WITT); THE COMMONEST ENGLISH WORDS (BY FRANK R. FRAPRIE); ENGLISH TRIGRAMS (BY FRANK R. FRAPRIE); ENGLISH DIGRAMS (BY FRANK R. FRAPRIE); SOLUTIONS; INDEX.

Abstract:

Thorough, systematic introduction to serious cryptography, especially strong in modern forms of cipher solution used by experts. Nihilist, grille, U.S. Army, key-phrase, multiple-alphabet, Gronsfeld, Porta, Beaufort, periodic ciphers, and more. Simple and advanced methods. 166 specimens to solve - with solutions.

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