Related-key impossible differential cryptanalysis of full-round HIGHT

Abstract

The HIGHT algorithm is a 64-bit block cipher with 128-bit key length, at CHES'06 as a lightweight cryptographic algorithm. In this paper, a new related-key impossible differential attack on the full-round algorithm is introduced. Our cryptanalysis requires time complexity of 2<sup>127.276</sup> HIGHT evaluations which is slightly faster than exhaustive… (More)

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