Related‐Key Impossible Differential Cryptanalysis of LBlock
Minm Xie, Jingjing Li, Yuechuan Zang · Chinese Journal of Electronics · 2017
A related-key impossible differential attack on 24-round LBlock is constructed by using new 16-round related-key impossible differentials and adding 4 rounds 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 263 chosen plaintexts and 275.42 24-round encryptions respectively.