April 2016
Intermediate to advanced
944 pages
27h 6m
German
Content preview from Kryptografie
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6 Der Data Encryption Standard
Nachdem wir bisher nur historisch interessante Verschlüsselungsverfahren betrachtet haben, kommen wir nun zu den Methoden, die heute verwendet werden. Natürlich werden diese vom Computer ausgeführt. Klartext, Geheimtext und Schlüssel sollten Sie sich dabei nicht als Buchstaben oder Zahlen vorstellen, sondern als Bit-Folgen. Zum Auftakt schauen wir uns ein besonders wichtiges Computer-Verschlüsselungsverfahren an, auch wenn dieses inzwischen in die Jahre gekommen ist: den Data Encryption Standard (DES).
6.1 DES-Grundlagen
Der Data Encryption Standard (DES) wurde Anfang der siebziger Jahre bei IBM in den USA entwickelt. ...
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