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

The Two-square cipher, also called double Playfair, is a manual symmetric encryption technique. It was developed to ease the cumbersome nature of the...

succeeded by Hymn Playfair Project TS Playfair, a Canadian sail training vessel Playfair's axiom named after John Playfair Playfair cipher, a manual encryption...

bigram plaintext statistics. Other ciphers by Delastelle: four-square cipher (related to Playfair) trifid cipher (similar to bifid) "Practical Cryptography"...

practical digraphic cipher (pairwise substitution), was the so-called Playfair cipher, invented by Sir Charles Wheatstone in 1854. In this cipher, a 5 x 5 grid...

attempt to uncover the ciphertext matrices. Unlike the Playfair cipher, a four-square cipher will not show reversed ciphertext digraphs for reversed...

ciphers, some of these ciphers are the Hill Cipher and Playfair Cipher. Homophonic ciphers can be decrypted to multiple messages. Ciphers that include multiple...

Other practical "pencil-and-paper" polygraphic ciphers include: Playfair cipher Bifid cipher Trifid cipher Lester S. Hill, Cryptography in an Algebraic...

said to have rejected the Playfair cipher because, even if school boys could cope successfully as Wheatstone and Playfair had shown, "our attachés could...

1897. Playfair is also remembered for promoting a new cipher system invented by Charles Wheatstone, now known as the Playfair cipher. Lord Playfair died...

substitution cipher: the unit of substitution is a sequence of two or more letters rather than just one (e.g., Playfair cipher) Transposition cipher: the ciphertext...

The Vigenère cipher (French pronunciation: [viʒnɛːʁ]) is a method of encrypting alphabetic text where each letter of the plaintext is encoded with a different...

falling into enemy hands. In 1854, Charles Wheatstone came up with the Playfair cipher, a keyword-based system that could be performed on paper in the field...

polygraphic substitution ciphers included the trifid and four-square ciphers. The last of these is a variant on the earlier Playfair cipher: Delastelle may have...

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...

stereoscope (a device for displaying three-dimensional images), and the Playfair cipher (an encryption technique). However, Wheatstone is best known for his...

substitution ciphers, including the Bacon cipher and Polybius square, before moving on to transposition ciphers, Playfair ciphers and polyalphabetic ciphers such...

Playfair cipher Polyalphabetic substitution Polybius square ROT13, ROT47 Scytale Steganography Substitution cipher Tabula recta Transposition cipher Vigenère...

message copied into Booth's diary. Thomas recognizes the message as a Playfair cipher, and translates it while Booth departs for Ford's Theatre to assassinate...

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

Jim Lyon Playfair, 1st Baron Playfair (1818–1898), promoter of the Playfair cipher, manual symmetric encryption technique Sir Nigel Playfair (1874–1934)...

double Transposition cipher (German: Doppelwürfel) 4-S-40 This system was used until 1926 or 1927 The Playfair cipher in Single Playfair (German: Kastenschlüssel)...

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...

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

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...

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...

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

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

Bell Labs. In 1914 he published the first recorded solution of the Playfair cipher. Mauborgne became a Major General in the United States Army, and from...

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...