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Erschienen in:
2010 | OriginalPaper | Buchkapitel
Integral Cryptanalysis of ARIA
verfasst von : Ping Li, Bing Sun, Chao Li
Erschienen in: Information Security and Cryptology
Verlag: Springer Berlin Heidelberg
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This paper studies the security of the block cipher ARIA against integral attack. The designers believe that determining whether any given byte position is balanced or not after 3 rounds of encryption is not possible. However, by determining the times that each element of the output of the second round appears is an even integer, we find some 3-round integral distinguishers of ARIA in this paper, which may lead to possible attacks on 4, 5 and 6-round ARIA. Both the data and time complexities of 4-round attack are 2
25
; the data and time complexities of 5-round attack are 2
27.2
and 2
76.7
, respectively; the data and time complexities of 6-round attack are 2
124.4
and 2
172.4
, respectively. Moreover, the 4 and 5-round attacks have the lowest data and time complexities compared to existing attacks on ARIA. Our results also show that the choice of S-box and different order of S-boxes do have influence on integral attacks.