| 释义 |
Playfair|ˈpleɪfɛə(r)|
The name of Lyon Playfair, 1st Lord Playfair (1818–98), British chemist and administrator, used attrib. and absol. to designate a cipher in which successive pairs of letters are replaced by pairs chosen in a prescribed manner from a matrix of 25 letters, usu. arranged in accordance with a key-word.
1922J. C. H. Macbeth Langie's Cryptography iv. 166 M. Langie has omitted to give any reference to the ‘Playfair’ cipher, which has been extensively used for military purposes. This cipher is one of the substitution variety, and may be operated with one or more key-words. 1932D. L. Sayers Have his Carcase xxvi. 344 Here's a cipher message. Probably Playfair. 1966M. R. D. Foot SOE in France iv. 105 As simple as a Playfair code based on a single word. 1974Encycl. Brit. Micropædia X. 643/3 He [sc. Sir Charles Wheatstone]..invented the Playfair cipher, which is based on substituting different pairs of letters for paired letters in the message. 1979Listener 18 Jan. 131/1, I see that I have to encipher my answers to other [crossword] clues in Playfair without knowing the keyword... I have a friend who could solve two Playfair squares before breakfast. |