Revisited Security Evaluation on Midori-64 against Differential Cryptanalysis
Guoyong Han, Hongluan Zhao · KSII Transactions on Internet and Information Systems · 2024
In this paper, the Mixed Integer Linear Programming (MILP) model is improved for searching differential characteristics of block cipher Midori-64, and 4 search strategies of differential path are given.By using strategy IV, set 1 S-box on the top of the distinguisher to be active, and set 3 S-boxes at the bottom to be active and the difference to be the same, then we obtain a 5-round differential characteristics.Based on the distinguisher, we attack 12-round Midori-64 with data and time complexities of 2 63 and 2 103.83 , respectively.To our best knowledge, these results are superior to current ones.