Cryptanalysis: A Study of Ciphers and Their SolutionCourier Corporation, 1956 - 237 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. |
Otras ediciones - Ver todas
Elementary Cryptanalysis: A Study of Ciphers and Their Solution Helen Fouché Gaines Vista de fragmentos - 1942 |
Términos y frases comunes
American Cryptogram Association autokey Beaufort cipher beginning cells CHAPTER cipher alphabet cipher disk columnar columnar transposition columns consider consonant-line consonants contacts contains cryptanalysis crypto cryptogram cryptogram-letter decipher decipherment decryptment decryptor device diagonals digits enciphered encipherment block exactly examination Figure five letters follow four frequency count graph grille group-length high-frequency horizontal included interval key-fragments key-length key-letters key-numbers key-square key-word length llll lllll method mixed alphabet Nihilist Nihilist cipher normal alphabet nulls Ohaver original pairs Parker Hitt period Piccola plaintext alphabet plaintext letters Playfair cipher Porta positions possible prepared present probable word repeated sequences represent reversed segment serial numbers series of numbers set-up sheet short shown in Fig shows simple substitution single letters square standing strips substitution cipher tableau taken taking tion transposition trigrams unit usually vertical Vigenère Vigenère cipher vowels writing written