Abstract:Zero-correlation linear cryptanalysis is a newly proposed attack of block ciphers. The first step of this cryptanalysis is to construct a zero-correlation linear hull whose correlation value is 0. This paper investigates the construction of zero-correlation linear hull for CLEFIA-like structure with Substitution-Permutation (SP)-type round function. And a new method of finding (4n+1) round zero-correlation linear hull of this structure is proposed. By the proposed method, large amount of zero-correlation linear hulls of 9 round CLEFIA are obtained.
崔霆, 金晨辉. 嵌套代替-扩散网络的CLEFIA结构零相关线性逼近的构造[J]. 电子与信息学报, 2012, 34(1): 227-230.
Cui Ting, Jin Chen-Hui. Construction of Zero-correlation Linear Hull for CLEFIA-like Structure with SPN Round Functions. , 2012, 34(1): 227-230.