Cryptanalysis: A Study of Ciphers and Their SolutionDover Publications, 1956 - 256 páginas Gaines's Cryptanalysis (formerly published as Elementary Cryptanalysis) is a standard elementary and intermediate text for persons seriously interested in modern science methods for enciphering and deciphering cryptograms. It does not simply repeat older material, but contains much about modern cryptanalysis that is not generally known except to experts. It is especially strong in modern forms of cipher solution. This clear and thorough text also provides the reader with 166 specimen codes to solve. This edition for the first time also includes solutions. A special appendix includes final letters, sequence charts, digram, trigram tables, most common words in English and frequencies in English, German, French, Italian, Spanish, and Portuguese. |
Contenido
GENERAL INFORMATION | 1 |
CONCEALMENT DEVICES | 4 |
TRANSPOSITION TYPES | 9 |
Derechos de autor | |
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Elementary Cryptanalysis: A Study of Ciphers and Their Solution Helen Fouché Gaines Vista de fragmentos - 1942 |
Términos y frases comunes
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z American Cryptogram Association autokey Beaufort cipher beginning cells cipher alphabet Cipher Disk columnar transposition columns considered consonant-line consonants contacts contains cryptanalysis crypto decipher decipherment decryptment decryptor device diagonals digits enciphered encipherment block exactly examination Figure five follow four frequency count grille group-length high-frequency horizontal interval key-fragments key-length key-letters key-numbers key-square key-word length method mixed alphabet Nihilist normal alphabet null cipher nulls Ohaver original pairs Parker Hitt period PICCOLA plaintext alphabet plaintext letters Playfair cipher Porta positions possible prepared probable word repeated sequences represent reversed segment serial numbers set-up shown in Fig shows simple substitution single letters square standing strips substitution cipher tableau taken tion transposition cipher trigrams unit usually Vigenère cipher vowels written