October 2025
Intermediate to advanced
530 pages
13h 14m
German
Content preview from Linux-Treiber entwickeln
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8.7 Crypto-Subsystem
8.7.1 Kleines Einmaleins der Kryptografie
Definition
Kryptografie beschäftigt sich mit technischen Verfahren zur Informationssicherheit, insbesondere jedoch mit Verschlüsselung. Bei der Verschlüsselung wird eine Klartextnachricht mithilfe von Verschlüsselungsalgorithmen – sogenannte Cipher – und unter Zuhilfenahme eines geheimen Schlüssels in den Ciphertext gewandelt. Unter der Voraussetzung, dass sowohl Algorithmus als auch eingesetzter Schlüssel als sicher gelten, kann der Ciphertext nur von denjenigen zurückgewandelt (entschlüsselt) und interpretiert werden, die im Besitz des passenden Schlüssels sind.
Verschlüsselungsarten
Prinzipiell werden zwei Arten der Verschlüsselung unterschieden: die symmetrische Verschlüsselung ...
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