cipher square

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• cipher square — noun : vigenère tableau …   Useful english dictionary

• Square — may mean:Mathematics*Square (algebra), to multiply a number or other quantity by itself **Perfect square **Square matrix **Square number **Square root*Square (geometry), a polygon with four equal sides and angles **Unit square*Square wave, a… …   Wikipedia

• Square (cryptographie) — Square Résumé Concepteur(s) Vincent Rijmen, Joan Daemen Première publication 1997 Dérivé de Chiffrement(s) basé(s) sur cet algorithme Rijndael Ca …   Wikipédia en Français

• Square (cipher) — Infobox block cipher name = Square caption = designers = Joan Daemen, Vincent Rijmen publish date = 1997 derived from = derived to = AES, CRYPTON, Twofish, Serpent key size = 128 bits block size = 128 bits structure = substitution permutation… …   Wikipedia

• Cipher security summary — This article summarizes publicly known attacks against ciphers. Note that not all entries may be up to date. Table color key No known successful attacks Theoretical break Attack demonstrated in practice The Best attack column lists the complexity …   Wikipedia

• Cipher Block Chaining — Mode d opération (cryptographie) En cryptographie, un mode d opération est la manière de traiter les blocs de texte clairs et chiffrés au sein d un algorithme de chiffrement par bloc. Chacun des modes possède ses propres atouts. Plusieurs modes… …   Wikipédia en Français

• 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

• Two-square cipher — The Two square cipher is a manual symmetric encryption technique. It was developed to ease the cumbersome nature of the large encryption/decryption matrix used in the four square cipher while still being slightly stronger than the Playfair cipher …   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

• Four-square cipher — The Four square cipher is a manual symmetric encryption technique. It was invented by famous French cryptographer Felix Delastelle.The technique encrypts pairs of letters ( digraphs ), and thus falls into a category of ciphers known as… …   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