Porta table cipher

См. также в других словарях:

• Autokey cipher — An autokey cipher (also known as the autoclave cipher) is a cipher which incorporates the message (the plaintext) into the key. There are two forms of autokey cipher: key autokey and text autokey ciphers. A key autokey cipher uses previous… …   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

• Vigenère cipher — The Vigenère cipher is a method of encrypting alphabetic text by using a series of different Caesar ciphers based on the letters of a keyword. It is a simple form of polyalphabetic substitution.The Vigenère (pronEng|ˌviːdʒɪˈnɛəɹ, veedj ih nair )… …   Wikipedia

• табличный шифр Порта — — [[http://www.rfcmd.ru/glossword/1.8/index.php?a=index d=23]] Тематики защита информации EN Porta table cipher …   Справочник технического переводчика

• Giovan Battista Bellaso — (Brescia 1505–...) was an Italian cryptologist.BiographyBellaso was born of a distinguished family in 1505. His father was Piervincenzo, a patrician of Brescia, owner since the 15th century of a house in town and a suburban estate in Capriano, in …   Wikipedia

• cryptology — cryptologist, n. cryptologic /krip tl oj ik/, cryptological, adj. /krip tol euh jee/, n. 1. cryptography. 2. the science and study of cryptanalysis and cryptography. [1635 45; < NL cryptologia. See CRYPTO , LOGY] * * * Introduction …   Universalium

• Cryptanalysis — Close up of the rotors in a Fialka cipher machine Cryptanalysis (from the Greek kryptós, hidden , and analýein, to loosen or to untie ) is the study of methods for obtaining the meaning of encrypted information, without access to the secret… …   Wikipedia

• Polygraphic substitution — A polygraphic substitution is a cipher in which a uniform substitution is performed on blocks of letters. When the length of the block is specifically known, more precise terms are used: for instance, a cipher in which pairs of letters are… …   Wikipedia

• Histoire De La Cryptologie — Cet article résume l histoire de la cryptographie de l Antiquité à aujourd hui. La cryptographie est la science du codage des messages à l aide de codes secrets ou de clés. Le codage des messages vise à en assurer la confidentialité, l… …   Wikipédia en Français

• Histoire de la cryptographie — Cet article résume l histoire de la cryptographie de l Antiquité à aujourd hui. La cryptographie est la science du codage des messages à l aide de codes secrets ou de clés. Le codage des messages vise à en assurer la confidentialité, l… …   Wikipédia en Français

• Histoire de la cryptologie — Cet article résume l histoire de la cryptographie de l Antiquité à aujourd hui. La cryptographie est la science du codage des messages à l aide de codes secrets ou de clés. Le codage des messages vise à en assurer la confidentialité, l… …   Wikipédia en Français