Kryptologie by Albrecht Beutelspacher - Bookswagon
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Kryptologie

Kryptologie


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About the Book

Aut prodesse volunt aut delectare poetae aut simul et iucunda et idonea dicere vitae. (Horaz) Solange es mit Sprache begabte Lebewesen gibt, solange gibt es auch schon vertrauliche Mitteilungen, also Mitteilungen, die nur fur eine einzige Person oder nur fur einen ganz begrenzten Personenkreis gedacht sind, und von denen aile ubrigen Personen keine Kenntnis erhalten sollen. Wie kann man eine Nachricht 'sicher' ubermitteln, d.h. so, daB kein Unbefugter Kenntnis vom Inhalt dieser Nachricht erhalt? Eine damit zusammenhangende, fast noch wichtigere Frage ist: Wie kann man erreichen, daB die Nachricht wirklich beim Empfanger ankommt, und zwar genauso, wie man sie losgeschickt hat? Traditionell gibt es zwei M6glichkeiten, diese Probleme zu 16sen: - Einmal kann man die Existenz der Nachricht verheimlichen. Man k6nnte die ver- trauliche Nachricht zum Beispiel mit unsichtbarer Tinte schreiben. - Man kann aber auch die Mitteilung durch eine vertrauenswurdige Person uber- mitteln lassen. Dies haben zu allen Zeiten heimlich Verliebte versucht - und fast aile klassischen Trag6dien zeugen vom letztlichen Scheitern dieser Bemuhungen. Eine ganz andersartige Methode besteht darin, vertrauliche Nachrichten zu ver- schliisseln. In diesem Fall verheimlicht man nicht ihre Existenz. 1m Gegenteil: Man ubermittelt die Nachricht uber einen 'unsicheren Kanal', aber so 'chiffriert', daB niemand - auBer dem wirklichen Empfanger - die Nachricht 'dechiffrieren' kann.


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Product Details
  • ISBN-13: 9783528089900
  • Sub Title: Eine Einführung in Die Wissenschaft Vom Verschlüsseln, Verbergen Und Verheimlichen. Ohne Alle Geheimniskrämerei, Aber Nicht Ohne Hinterlistigen Scha
  • ISBN-10: 3528089903


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