The Alberti cipher, created in 1467 by Italian architect Leon Battista Alberti, was one of the first polyalphabetic ciphers. In the opening pages of his...

polyalphabetic ciphers may have been developed by the Arab cryptologist Al Kindi (801–873) centuries earlier. The Alberti cipher by Leon Battista Alberti around...

A cipher disk is an enciphering and deciphering tool developed in 1470 by the Italian architect and author Leon Battista Alberti. He constructed a device...

keyboard instrument Alberti cipher, an early polyalphabetic cipher (late 15th century) Alberti (family), Florentine political family Albertis (disambiguation)...

Leon Battista Alberti (Italian: [leombatˈtista alˈbɛɾti]; 14 February 1404 – 25 April 1472) was an Italian Renaissance humanist author, artist, architect...

substitution ciphers trace their origins to the Italian humanist Leon Battista Alberti, born on February 14, 1404, in Genoa, Italy. Alberti, the illegitimate...

places instead of one. The irregular pattern of rotation produced an Alberti cipher. The vulnerability of Japanese code systems was made public in 1931...

In cryptography, a substitution cipher is a method of encrypting in which units of plaintext are replaced with the ciphertext, in a defined manner, with...

polyalphabetic cipher was by Leon Battista Alberti around 1467 and used a metal cipher disk to switch between cipher alphabets. Alberti's system only switched...

the tabula recta to define a polyalphabetic cipher, which was equivalent to Leon Battista Alberti's cipher disk except that the order of the letters in...

Bacon's cipher or the Baconian cipher is a method of steganographic message encoding devised by Francis Bacon in 1605. In steganography, a message is...

invention of polyalphabetic ciphers came more sophisticated aids such as Alberti's own cipher disk, Johannes Trithemius' tabula recta scheme, and Thomas Jefferson's...

mid-18th century. The so-called 'Port-Lesney' music cipher uses a mechanical device known as an Alberti cipher disk There are two rotating disks: the outer disk...

The Enigma machine is a cipher device developed and used in the early- to mid-20th century to protect commercial, diplomatic, and military communication...

pigpen cipher (alternatively referred to as the masonic cipher, Freemason's cipher, Rosicrucian cipher, Napoleon cipher, and tic-tac-toe cipher) is a geometric...

In cryptography, a Caesar cipher, also known as Caesar's cipher, the shift cipher, Caesar's code, or Caesar shift, is one of the simplest and most widely...

In cryptography, a transposition cipher (also known as a permutation cipher) is a method of encryption which scrambles the positions of characters (transposition)...

Vigenère cipher, the Autokey cipher and the Alberti cipher. In the later stages of the competition, the ADFGVX cipher, the Solitaire cipher, the Double...

descendants of the cipher disk developed in the 15th century by Leon Battista Alberti. Rather than the complex polyalphabetic Alberti cipher method, the decoders...

Enigma Cipher Centre Fragment of the permanent exposition Fragment of the permanent exposition, replica of the Rejewski cryptologic bomb Alberti cipher Zygalski...

substitution ciphers. Leone Battista Alberti, polymath/universal genius, inventor of polyalphabetic substitution (more specifically, the Alberti cipher), and...

In cryptography, a classical cipher is a type of cipher that was used historically but for the most part, has fallen into disuse. In contrast to modern...

A book cipher is a cipher in which each word or letter in the plaintext of a message is replaced by some code that locates it in another text, the key...

The Playfair cipher or Playfair square or Wheatstone–Playfair cipher is a manual symmetric encryption technique and was the first literal digram substitution...

The rail fence cipher (also called a zigzag cipher) is a classical type of transposition cipher. It derives its name from the manner in which encryption...

null cipher, also known as concealment cipher, is an ancient form of encryption where the plaintext is mixed with a large amount of non-cipher material...

rendered ineffective by the polyalphabetic cipher, described by al-Qalqashandi (1355–1418) and Leon Battista Alberti (in 1465), which varied the substitution...

letters in a ciphertext. The method is used as an aid to breaking classical ciphers. Frequency analysis is based on the fact that, in any given stretch of...

(Hebrew: אתבש; also transliterated Atbaš) is a monoalphabetic substitution cipher originally used to encrypt the Hebrew alphabet. It can be modified for use...

used as a basic cipher called the Polybius cipher. This cipher is quite insecure by modern standards, as it is a substitution cipher with characters being...