Sentence examples for codebooks from inspiring English sources

Cipher systems prevailed, however, for military tactical communications because of the difficulty of protecting codebooks from capture or compromise in the field.

03/05: Russian Embassy delivers package containing personal belongings requested by subject for sentimental reasons: shortwave radio, codebooks, fountain-pen laser gun, Swiss passport, airline tickets, false nose and mustache, etc. (ineptly identified by Russians as "pajamas and slippers").

In the 19th century codebooks were used not so much for secrecy as for compression, to bring down the prohibitive cost of telegraph communication.

If not for a computer scientist's hobby of collecting old telegraph codebooks, a crucial chapter in modern cryptography might have been lost to history.

On a recent trip to Washington he found himself with a free afternoon and decided to spend it at the Library of Congress, looking for codebooks that weren't in his collection.

Based on the work of a team of Polish mathematicians in 1932, and several captured machines and codebooks, the Enigma was broken at Bletchley Park on 1 June 1941.

If he is shocked by the unpatriotic inaccuracies of Blackadder, we can only imagine what Mr Gove would make of U-571 (2000), in which the British navy's 1941 capture of an Enigma machine and codebook is attributed to Americans; or Cromwell (1970), in which Old Ironsides is reinvented as a champion of freedom and democracy; or the head-explodingly incorrect historical oeuvre of Mel Gibson.

A block cipher breaks the plaintext into blocks of the same size for encryption using a common key: the block size for a Playfair cipher is two letters, and for the DES (described in the section History of cryptology: The Data Encryption Standard and the Advanced Encryption Standard) used in electronic codebook mode it is 64 bits of binary-encoded plaintext.

Somebody somewhere has got a World War II codebook like I've got a World War I codebook".

As the two men argued, Ketchum accused Leib — who occasionally consulted with the C.I.A. on chemical work — of being a spy, and blamed him for taking a secret codebook from a safe in his office.

When he first joined the bank, it had a telegraphic codebook for communicating with the head office, in Hong Kong.