Selektiver Verschlüsselungs algorithmus für Nachrichten in drahtlosen Ad-hoc-Netzwerken
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Die Sicherheit ist eine der gr� ten Herausforderungen im Bereich der Internet- und Netzwerkanwendungen. In diesem Bereich besteht das Hauptproblem darin, die Sicherheit der Daten zu gew�hrleisten, die �ber die Kommunikationsverbindung �bertragen werden. Die Datenverschl�sselung ist die prim�re L�sung zum Schutz der Vertraulichkeit und Integrit�t der Daten zwischen beliebigen Knotenpaaren. Mit Hilfe von symmetrischen Schl�sselalgorithmen k�nnen schnelle und effiziente Kryptosysteme aufgebaut werden, da sie bedeutende Anwendungen haben. F�r ein drahtloses Ad-hoc-Netz mit eingeschr�nkten Rechenressourcen ist das auf symmetrischen Schl�sselalgorithmen basierende Kryptosystem zusammen mit anderen Sicherheitsstrategien f�r eine solche agile und dynamische Umgebung �u erst geeignet. Selektive Verschl�sselungsalgorithmen werden von drahtlosen Netzen bevorzugt, da sie f�r drahtlose Ger�te energieeffizient sind. Die probabilistischen und die vorgeschlagenen Algorithmen erm�glichen es einem Sender, eine angemessene Unsicherheit in den Prozess der Nachrichtenverschl�sselung einzubeziehen, so dass nur ein vertrauensw�rdiger Empf�nger den verschl�sselten Text entschl�sseln kann und andere nicht autorisierte Knoten keine Kenntnis von den �bertragenen Nachrichten haben.
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