Ebook: Cryptanalysis: A Study of Ciphers and Their Solution

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.;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.