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A related-key impossible differential attack on 24-round LBlock is constructed by using new 16-round related-key impossible differentials and adding 4rounds at the top and 4 rounds at the bottom of these 16-round related-key impossible differential paths. The data and time complexities are about 2~(63) chosen plaintexts and2~(75.42)24-round encryptions respectively.
A related-key impossible differential attack on 24-round LBlock is constructed by using new 16-round related-key impossible differentials and adding 4rounds at the top and 4 rounds at the bottom of these 16-round related-key impossible differential paths. data and time complexities are about 2 ~ (63) chosen plaintexts and2 ~ (75.42) 24-round encryptions respectively.