Paper 2016/535

Impossible Differential Cryptanalysis of Midori

Chen Zhan and Wang Xiaoyun

Abstract

Midori is a light weight block cipher recently presented by Banik et al in ASIACRYPT 2015. There are two versions of Midori with state sizes of 64-bit and 128-bit respectively. The round function is based on Substitution-Permutation Network(SPN). In this paper, we give impossible differential cryptanalysis of Midori64. We studied the non-linear layer of the cipher and give two useful properties. We also find the first 6- round impossible differential paths with two non-zero and equal input cells and one non-zero output cell, and then mount 10-round attack. This is the first impossible differential attack on Midori.

Metadata
Available format(s)
-- withdrawn --
Category
Public-key cryptography
Publication info
Published elsewhere. Major revision. ICMAE2016
Keywords
light weight block ciphersimpossible differential cryptanalysis.
Contact author(s)
z-chen14 @ mails tsinghua edu cn
History
2018-04-18: withdrawn
2016-05-31: received
See all versions
Short URL
https://ia.cr/2016/535
License
Creative Commons Attribution
CC BY
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