Polyalphabetic Cipher

A polyalphabetic cipher is any cipher based on substitution, using multiple substitution alphabets. The Vigenère cipher is probably the best-known example of a polyalphabetic cipher, though it is a simplified special case. The Enigma machine is more complex but still fundamentally a polyalphabetic substitution cipher.

Read more about Polyalphabetic Cipher:  History

Other articles related to "polyalphabetic, ciphers, polyalphabetic cipher, cipher, polyalphabetic ciphers":

Substitution Cipher - Polyalphabetic Substitution
... Polyalphabetic substitution ciphers were first described in 1467 by Leone Battista Alberti in the form of disks ... In a polyalphabetic cipher, multiple cipher alphabets are used ... of choosing which alphabet to use next, defines the particular polyalphabetic cipher ...
Polyalphabetic Cipher - History
... The Alberti cipher by Leon Battista Alberti around 1467 was believed to be the first polyalphabetic cipher ... For this encipherment Alberti used a decoder device, his cipher disk, which implemented a polyalphabetic substitution with mixed alphabets ... Although Alberti is usually considered the father of polyalphabetic cipher, it has been claimed that polyalphabetic ciphers may have been developed by the Arab cryptologist Al Kindi 600 ...
Japanese Cryptology From The 1500s To Meiji - The Two-Letter, Ten-Chart Code
... This is just a code version of a polyalphabetic substitution cipher ... Polyalphabetic ciphers use several different enciphering alphabets and change between them at some interval, usually after every letter ... The strength of a polyalphabetic cipher comes from how many alphabets it uses to encipher, how often it switches between them, and how it switches between them (at random or ...

Famous quotes containing the word cipher:

    The eye is the first circle; the horizon which it forms is the second; and throughout nature this primary figure is repeated without end. It is the highest emblem in the cipher of the world.
    Ralph Waldo Emerson (1803–1882)