to write a message in cipher

См. также в других словарях:

• cipher — [sī′fər] n. [ME cifre < OFr cyfre < ML cifra < Ar ṣifr, ṣefr, a cipher, nothing < ṣafara, to be empty] 1. the symbol 0, indicating a value of zero 2. a person or thing of no importance or value 3. a) a system of secret writing based… …   English World dictionary

• cipher — cipherable, adj. cipherer, n. /suy feuhr/, n. 1. zero. 2. any of the Arabic numerals or figures. 3. Arabic numerical notation collectively. 4. something of no value or importance. 5. a person of no influence; nonentity. 6. a secret method of… …   Universalium

• cipher — ci•pher [[t]ˈsaɪ fər[/t]] n. 1) math. zero 2) math. any of the Arabic numerals or figures 3) a person or thing of no value or importance; nonentity 4) crp a) a secret method of writing, as by code b) writing done by such a method; a coded message …   From formal English to slang

• write in code — verb convert ordinary language into code We should encode the message for security reasons • Syn: ↑code, ↑encipher, ↑cipher, ↑cypher, ↑encrypt, ↑inscribe • Derivationally related forms: ↑ …   Useful english dictionary

• Classical cipher — A cipher is a means of concealing a message, where letters of the message are substituted or transposed for other letters, letter pairs, and sometimes for many letters. In cryptography, a classical cipher is a type of cipher that was used… …   Wikipedia

• Transposition cipher — In cryptography, a transposition cipher is a method of encryption by which the positions held by units of plaintext (which are commonly characters or groups of characters) are shifted according to a regular system, so that the ciphertext… …   Wikipedia

• Alberti cipher — The Alberti Cipher was one of the first polyalphabetic ciphers. Leon Battista Alberti Created in the 15th century (1466/67) by Leon Battista Alberti, it was the peak of cryptography at that time.Its inventor was Leon Battista Alberti, an… …   Wikipedia

• Caesar cipher — The action of a Caesar cipher is to replace each plaintext letter with one fixed number of places down the alphabet. This example is with a shift of three, so that a B in the p …   Wikipedia

• Running key cipher — In classical cryptography, the running key cipher is a type of polyalphabetic substitution cipher in which a text, typically from a book, is used to provide a very long keystream. Usually, the book to be used would be agreed ahead of time, while… …   Wikipedia

• The Alphabet Cipher — Lewis Carroll published The Alphabet Cipher in 1868, possibly in a children s magazine. It describes what is known as a Vigenère cipher, a well known scheme in cryptography. While Carroll calls this cipher unbreakable , Kasiski had published a… …   Wikipedia

• ADFGVX cipher — In cryptography, the ADFGVX cipher was a field cipher used by the German Army during World War I. ADFGVX was in fact an extension of an earlier cipher called ADFGX. Invented by Colonel Fritz Nebel and introduced in March 1918, the cipher was a… …   Wikipedia