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Elementary cryptanalysis
Helen Fouché Gaines
· How_To · 20 章
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目录
CHAPTER III Transposition Types
CHAPTER V Geometrical Types — The Turning Grille
CHAPTER VI Irregular Types — Columnar Transposition
CHAPTER VII General Methods — Multiple Anagramming, Etc.
CHAPTER IX Simple Substitution — Fundamentals
CHAPTER X The Consonant-Line Short Cut
CHAPTER XII Multiple-Alphabet Ciphers — The Vigenère
CHAPTER XIII The Gronsfeld, Porta, and Beaufort Ciphers
CHAPTER XIV The Kasiski Method for Periodic Ciphers
CHAPTER XVI Auto-Encipherment
CHAPTER XVII Some Periodic Number-Ciphers
CHAPTER XVIII Periodic Ciphers with Mixed Alphabets
CHAPTER XX Vigenère with Key-Progression
CHAPTER XXI Polygram Substitution — The Playfair Cipher
APPENDIX
ENGLISH TRIGRAMS
INDEX
Chapter 18
Chapter 19
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