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| A Construction Method of Impossible Difference for (2n,r,t)_GFNSP Overall Structure |
| Cui Ting Jin Chen-hui |
| Electronic Technology Institute, Information Engineering University, Zhengzhou 450004, China |
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Abstract Impossible differential attack should be launched with the construction of impossible difference. This paper investigates the construction method of impossible differences for (2n,r,t)_GFNSP overall structure. A kind of (4n+1)-round impossible differences and the construct method with computation complexity O(n2r10) are presented. And this paper provides the structure of (4n+1)-round impossible differences against the DSM strategy which is proposed by Shirai et al..
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Received: 20 November 2009
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Corresponding Authors:
Cui Ting
E-mail: cuiting_1209@yahoo.com.cn
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2011, Vol. 33 
