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Äquivalente Schlüssel

In: Das DDR-Chiffriergerät T-310

Author

Listed:
  • Wolfgang Killmann

  • Winfried Stephan

Abstract

Zusammenfassung Äquivalente Schlüssel sehen wir als eines der wichtigsten, jedoch auch als eines der schwierigsten Probleme an. Für die Bestimmung des Zeitschlüssels durch Angreifer ist es ausreichend, nur einen zum verwendeten Zeitschlüssel äquivalenten Zeitschlüssel zu bestimmen, der die gleiche Verschlüsselung bewirkt. Das Kapitel enthält sowohl Ergebnisse, die bis 1990 erzielt wurden, als auch neuere Ergebnisse. Die Ergebnisse können heute insbesondere unter Verwendung der Ergebnisse zur Periodizität weiterentwickelt werden. Es wird gezeigt, dass der Chiffrieralgorithmus T-310 mindestens 0 ,8 $$\cdot 2^{115}$$ · 2 115 nicht äquivalente Zeitschlüssel in Bezug auf die Substitutionsfolge besitzt. Damit ist die Anwendung der Totalen Probier-Methode ausgeschlossen.

Suggested Citation

  • Wolfgang Killmann & Winfried Stephan, 2023. "Äquivalente Schlüssel," Springer Books, in: Das DDR-Chiffriergerät T-310, edition 2, chapter 0, pages 189-211, Springer.
    • Handle: RePEc:spr:sprchp:978-3-662-67584-7_11
    DOI: 10.1007/978-3-662-67584-7_11
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