Zero-correlation linear attack on reduced-round SKINNY |
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Authors: | Yi ZHANG Ting CUI Congjun WANG |
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Affiliation: | Department of Applied Mathematics, PLA SSF Information Engineering University, Zhengzhou 450000, China |
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Abstract: | At ToSC 2019, Ankele et al. proposed a novel idea for constructing zero-correlation linear distinguishers in a related-tweakey model. This paper further clarifies this principle and gives a search model for zero-correlation distinguishers. As a result, for the first time, the authors construct 15-round and 17-round zero-correlation linear distinguishers for SKINNY-- and SKINNY--, respectively, which are both two rounds longer than Anekele et al.’s. Based on these distinguishers, the paper presents related-tweakey zero-correlation linear attacks on 22-round SKINNY-- and 26-round SKINNY--, respectively. |
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Keywords: | tweakable block cipher zero-correlation related-tweakey SKINNY |
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