Anzeige
Erschienen in:
2012 | OriginalPaper | Buchkapitel
New Insights on Impossible Differential Cryptanalysis
verfasst von : Charles Bouillaguet, Orr Dunkelman, Pierre-Alain Fouque, Gaëtan Leurent
Erschienen in: Selected Areas in Cryptography
Verlag: Springer Berlin Heidelberg
Aktivieren Sie unsere intelligente Suche, um passende Fachinhalte oder Patente zu finden.
Wählen Sie Textabschnitte aus um mit Künstlicher Intelligenz passenden Patente zu finden. powered by
Markieren Sie Textabschnitte, um KI-gestützt weitere passende Inhalte zu finden. powered by
Since its introduction, impossible differential cryptanalysis has been applied to many ciphers. Besides the specific application of the technique in various instances, there are some very basic results which apply to generic structures of ciphers, e.g., the well known 5-round impossible differential of Feistel ciphers with bijective round functions.
In this paper we present a new approach for the construction and the usage of impossible differentials for Generalized Feistel structures. The results allow to extend some of the previous impossible differentials by one round (or more), answer an open problem about the ability to perform this kind of analysis, and tackle, for the first time the case of non-bijective round functions.