Abstract

The security of ARIA against integral attack is analyzed in this paper. First we modify the 3-round integral distinguishers proposed by Li et al., and by analyzing the property of the diffusion layer of ARIA we present new 4-round integral distinguishers. Moreover, based on the 4-round integral distinguishers and the partial sum technique we improve integral attack result on 6-round ARIA and propose integral attack on 7-round ARIA. The results are the best integral attack results on reduced-round ARIA so far.

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