substitution cryptography

См. также в других словарях:

• substitution cipher — Cryptography. a cipher that replaces letters of the plain text with another set of letters or symbols. Cf. transposition cipher. [1935 40] * * * …   Universalium

• substitution cipher — Cryptography. a cipher that replaces letters of the plain text with another set of letters or symbols. Cf. transposition cipher. [1935 40] …   Useful english dictionary

• 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

• Cryptography — Secret code redirects here. For the Aya Kamiki album, see Secret Code. Symmetric key cryptography, where the same key is used both for encryption and decryption …   Wikipedia

• Cryptography in Japan — There is not much cryptological history in Japan prior to the twentieth century, only a few simple codes were used and there seems to have been no practice of cryptanalysis at all.There seems to be almost no cryptology in Japan before the Warring …   Wikipedia

• Substitution box — In cryptography, a substitution box (or S box) is a basic component of symmetric key algorithms. In block ciphers, they are typically used to obscure the relationship between the plaintext and the ciphertext mdash; Shannon s property of confusion …   Wikipedia

• Substitution monoalphabétique — Chiffrement par substitution Le chiffrement par substitution est une technique de cryptage utilisée depuis fort longtemps puisque le chiffre de César en est un cas particulier. Sans autre précision, elle désigne en général un chiffrement par… …   Wikipédia en Français

• Substitution polyalphabétique — Chiffrement par substitution Le chiffrement par substitution est une technique de cryptage utilisée depuis fort longtemps puisque le chiffre de César en est un cas particulier. Sans autre précision, elle désigne en général un chiffrement par… …   Wikipédia en Français

• Substitution — For Wikipedia Template Substitution, see Substitution is the replacement of one thing with another. In mathematics: * Substitution rule, in calculus * Variable substitution, in first order logic * The substitution method of solving simultaneous… …   Wikipedia

• Substitution (Kryptographie) — Als Substitution (von lateinisch: substituere = „ersetzen“) bezeichnet man in der Kryptographie, also in dem Wissenschaftszweig der Kryptologie, der sich mit den Geheimschriften befasst, eine der beiden grundlegenden Verschlüsselungsklassen.[1]… …   Deutsch Wikipedia

• Substitution-permutation network — In cryptography, an SP network, or substitution permutation network (SPN), is a series of linked mathematical operations used in block cipher algorithms such as AES.These networks consist of S boxes and P boxes that transform blocks of input bits …   Wikipedia