Revisited Security Evaluation on Midori-64 against Differential Cryptanalysis

• Guoyong Han,
• Hongluan Zhao,

Vol. 18, No. 2, February 29, 2024
10.3837/tiis.2024.02.011, Download Paper (Free):

• Midori-64
• block cipher
• Mixed Integer Linear Programming
• Differential Distinguisher
• differential cryptanalysis

Abstract

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 263 and 2103.83, respectively. To our best knowledge, these results are superior to current ones.

Statistics

Cite this article