2010 | OriginalPaper | Buchkapitel
Impossible Differential Cryptanalysis of ARIA Reduced to 7 Rounds
verfasst von : Chenghang Du, Jiazhe Chen
Erschienen in: Cryptology and Network Security
Verlag: Springer Berlin Heidelberg
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This paper studies the security of the block cipher ARIA against impossible differential cryptanalysis. We find a new impossible differential property of ARIA, and propose an attack against ARIA-256 reduced to 7 rounds based on this property, while previous attacks can only attack ARIA up to 6 rounds. Our new attack needs 2
125
chosen plaintexts and 2
238
7-round encryptions. This is the best result for impossible differential cryptanalysis of ARIA known so far.