cipher
91Hasty Pudding cipher — Infobox block cipher name = Hasty Pudding Cipher caption = designers = Richard Schroeppel publish date = 1998 ndash;06 derived from = derived to = related to = certification = key size = Variable block size = Variable structure = rounds =… …
92Book cipher — A book cipher is a cipher in which the key is some aspect of a book or other piece of text; books being common and widely available in modern times, users of book ciphers take the position that the details of the key is sufficiently well hidden… …
93Pigpen cipher — The pigpen cipher uses graphical symbols assigned according to a key similar to the above diagram.[1] The pigpen cipher (sometimes referred to as the masonic cipher, Freemason s cipher, Rosicrucian cipher, or Tic tac toe cipher) …
94Playfair 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… …
95Cryptomeria cipher — The Feistel function of the Cryptomeria cipher. General Designers 4C Entity First published …
96National Cipher Challenge — The National Cipher Challenge is an annual cryptographic competition organised by the University of Southampton School of Mathematics. Competitors attempt to break cryptograms published on the competition website. In the 2007/08 challenge, 1301… …
97Polyalphabetic 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… …
98Dorabella Cipher — The text of the Dorabella Cipher, in Elgar s handwriting The Dorabella Cipher is an enciphered letter written by Edward Elgar to Miss Dora Penny, which was accompanied by another dated July 14, 1897. Penny was never able to decipher it and its… …
99ADFGVX 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… …
100Mercy (cipher) — This article is about the block cipher. For other uses, see Mercy (disambiguation). Mercy General Designers Paul Crowley First published April 2000[1] Derived from WAKE …
