cipher out a scheme

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• Intel Cascade Cipher — Infobox block cipher name = Intel Cascaded Cipher caption = designers = Ernie Brickell, Gary Graunke publish date = derived from = AES, Serpent derived to = related to = certification = key size = 128 bits block size = 128 bits structure = AES… …   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

• Substitution cipher — In cryptography, a substitution cipher is a method of encryption by which units of plaintext are replaced with ciphertext according to a regular system; the units may be single letters (the most common), pairs of letters, triplets of letters,… …   Wikipedia

• Block cipher modes of operation — This article is about cryptography. For method of operating , see modus operandi. In cryptography, modes of operation is the procedure of enabling the repeated and secure use of a block cipher under a single key.[1][2] A block cipher by itself… …   Wikipedia

• Hill cipher — Hill s cipher machine, from figure 4 of the patent In classical cryptography, the Hill cipher is a polygraphic substitution cipher based on linear algebra. Invented by Lester S. Hill in 1929, it was the first polygraphic cipher in which it was… …   Wikipedia

• Playfair cipher — The Playfair cipher or Playfair square is a manual symmetric encryption technique and was the first literal digraph substitution cipher. The scheme was invented in 1854 by Charles Wheatstone, but bears the name of Lord Playfair who promoted the… …   Wikipedia

• Vigenère cipher — The Vigenère cipher is a method of encrypting alphabetic text by using a series of different Caesar ciphers based on the letters of a keyword. It is a simple form of polyalphabetic substitution.The Vigenère (pronEng|ˌviːdʒɪˈnɛəɹ, veedj ih nair )… …   Wikipedia

• 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

• 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

• QUAD (cipher) — Infobox block cipher name = QUAD caption = designers = Côme Berbain, Henri Gilbert and Jacques Patarin publish date = May 28, 2006 (at Eurocrypt) derived from = derived to = related to = certification = key size = 80 bits structure = multivariate …   Wikipedia

• ci´pher|a|ble — ci|pher «SY fuhr», noun, verb. –n. 1. secret writing or code. A cipher transposes the letters of a message according to a set pattern, or replaces the proper letters with substitutes called for in the system used, or combines both methods. »Part… …   Useful english dictionary