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| Construction of Zero-correlation Linear Hull for CLEFIA-like Structure with SPN Round Functions |
| Cui Ting Jin Chen-hui |
| Institution of Electronic Technology, Information Engineering University, Zhengzhou 450004, China |
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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.
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Received: 19 May 2011
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Corresponding Authors:
Cui Ting
E-mail: cuiting_1209@yahoo.com.cn
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2012, Vol. 34 
