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http://dbpedia.org/ontology/abstract 這個從美國南北戰爭留下的密碼盤,直徑大約95mm,它由兩個同心可旋轉的盤子裝在一的中心點所組成。圓周被等分成三十等分較小的密碼盤寫著英文字母。在1470年,義大利建築師和莱昂·巴蒂斯塔·阿尔伯蒂(作者)合作開發了一個可以編碼、解碼的密碼盤。他構想出一個裝置,由兩個同心的圓盤相疊組成,較大的盤子叫"Stationary"以及較小的盤子叫"Moveable"因為較小的盤子可在較大的盤子上轉動。 , A cipher disk is an enciphering and deciphA cipher disk is an enciphering and deciphering tool developed in 1470 by the Italian architect and author Leon Battista Alberti. He constructed a device, (eponymously called the Alberti cipher disk) consisting of two concentric circular plates mounted one on top of the other. The larger plate is called the "stationary" and the smaller one the "moveable" since the smaller one could move on top of the "stationary". The first incarnation of the disk had plates made of copper and featured the alphabet, in order, inscribed on the outer edge of each disk in cells split evenly along the circumference of the circle. This enabled the two alphabets to move relative to each other creating an easy to use key. Rather than using an impractical and complicated table indicating the encryption method, one could use the much simpler cipher disk. This made both encryption and decryption faster, simpler and less prone to error.n faster, simpler and less prone to error. , O cipher disk (Disco de Cifra ou Código) eO cipher disk (Disco de Cifra ou Código) era uma ferramenta de codificar e decifrar (decodificar) desenvolvida em 1470 pelo arquiteto e autor italiano Leon Battista Alberti, que construiu um dispositivo chamado de disco cifrado de Alberti (que criou também uma cifra polialfabética) que consiste em duas placas circulares concêntricas montadas uma em cima da outra. A placa maior é chamada de "estacionária" e a menor de "móvel", uma vez que a menor poderia se mover em cima da placa "estacionária".". A primeira forma do disco tinha placas de cobre e apresentava o alfabeto em sequência tradicional inscrito na borda externa de cada disco em células divididas igualmente ao longo da circunferência do círculo. Isso permitia que os dois alfabetos se movessem em relação um ao outro, criando algo fácil de se usar. Em lugar de se usar uma tabela complicada e impraticável indicando o método de criptografia, pode-se usar o disco de criptografia muito mais simples. Isso tornou a criptografia e a descriptografia mais rápidas, mais simples e menos sujeitas a erros.as, mais simples e menos sujeitas a erros. , Eines der ersten Geräte zur VerschlüsselunEines der ersten Geräte zur Verschlüsselung war die Chiffrierscheibe. Dabei handelt es sich um zwei runde Metallscheiben, die auf einer gemeinsamen Achse sitzen und so verbunden sind, dass sich die kleinere auf der größeren drehen kann. Scheiben dieser Art gibt es seit dem 15. Jahrhundert. Die Entwicklung der ersten Chiffrierscheibe wird Leon Battista Alberti zugeschrieben. Am äußeren Rand der Scheiben sind jeweils unterschiedliche Alphabete oder Symbole angegeben. Durch Verdrehen der Scheiben gegeneinander verschieben sich diese Alphabete, was zur Verschlüsselung genutzt wird. Wenn zum Beispiel das innere B unter dem äußeren A (anders als im Bild) liegt, dann entspricht das einer Verschiebechiffre um eine Stelle, und man kann über dem inneren Klartextbuchstaben außen den Geheimtextbuchstaben (oder, wie hier im Bild, das Geheim-Symbol, beispielsweise „8818“) ablesen. Die äußere Scheibe beinhaltet hier das Geheimtext- und die innere das Klartext-Alphabet. So lässt sich nach einmaligem Einstellen der Scheiben sehr leicht eine monoalphabetische Verschlüsselung erreichen, oder, wenn man die Stellung der Scheiben zueinander während der Verschlüsselung verändert, sogar eine polyalphabetische Verschlüsselung.ar eine polyalphabetische Verschlüsselung.
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rdfs:comment Eines der ersten Geräte zur VerschlüsselunEines der ersten Geräte zur Verschlüsselung war die Chiffrierscheibe. Dabei handelt es sich um zwei runde Metallscheiben, die auf einer gemeinsamen Achse sitzen und so verbunden sind, dass sich die kleinere auf der größeren drehen kann. Scheiben dieser Art gibt es seit dem 15. Jahrhundert. Die Entwicklung der ersten Chiffrierscheibe wird Leon Battista Alberti zugeschrieben. wird Leon Battista Alberti zugeschrieben. , A cipher disk is an enciphering and deciphA cipher disk is an enciphering and deciphering tool developed in 1470 by the Italian architect and author Leon Battista Alberti. He constructed a device, (eponymously called the Alberti cipher disk) consisting of two concentric circular plates mounted one on top of the other. The larger plate is called the "stationary" and the smaller one the "moveable" since the smaller one could move on top of the "stationary".one could move on top of the "stationary". , O cipher disk (Disco de Cifra ou Código) eO cipher disk (Disco de Cifra ou Código) era uma ferramenta de codificar e decifrar (decodificar) desenvolvida em 1470 pelo arquiteto e autor italiano Leon Battista Alberti, que construiu um dispositivo chamado de disco cifrado de Alberti (que criou também uma cifra polialfabética) que consiste em duas placas circulares concêntricas montadas uma em cima da outra. A placa maior é chamada de "estacionária" e a menor de "móvel", uma vez que a menor poderia se mover em cima da placa "estacionária".". A primeira forma do disco tinha placas de cobre e apresentava o alfabeto em sequência tradicional inscrito na borda externa de cada disco em células divididas igualmente ao longo da circunferência do círculo. Isso permitia que os dois alfabetos se movessem em relação um ao outro, criando algo fáci em relação um ao outro, criando algo fáci , 這個從美國南北戰爭留下的密碼盤,直徑大約95mm,它由兩個同心可旋轉的盤子裝在一的中心點所組成。圓周被等分成三十等分較小的密碼盤寫著英文字母。在1470年,義大利建築師和莱昂·巴蒂斯塔·阿尔伯蒂(作者)合作開發了一個可以編碼、解碼的密碼盤。他構想出一個裝置,由兩個同心的圓盤相疊組成,較大的盤子叫"Stationary"以及較小的盤子叫"Moveable"因為較小的盤子可在較大的盤子上轉動。
rdfs:label Disco de cifra , Cipher disk , 密碼盤 , Chiffrierscheibe
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