Differential analysis of MIBS-64 and evaluation under quantum model

Abstract

MIBS is a lightweight block cipher with 32-round Feistel structure and 64 bit block length, including 64 bit and 80 bit master key versions. Based on the 12-round differential characteristics and the characteristics of key arrangement algorithm, this paper proposes 15-round differential analysis for MIBS-64 algorithm for the first time. This article also evaluates the differential analysis of the MIBS algorithm under the quantum model.