SMS4分组密码分析的一些结果

Int. J. Appl. Cryptogr. Pub Date : 2010-07-01 DOI:10.1504/IJACT.2010.033799

Wentao Zhang, Bozhan Su, Wenling Wu, D. Feng

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引用次数: 2

摘要

SMS4是中国无线网络WAPI标准中使用的128位分组密码。在过去的几年里，这个密码引起了很多关注。本文由两部分组成。第一部分是SMS4的线性扩散层L的设计。对L的一些观察，在很大程度上揭示了L和此类类函数的设计原理。第二部分是针对SMS4的差分攻击。提出了一种有效的19轮差分特性。然后，给出了一种针对23轮SMS4的简单差分攻击，这是迄今为止最著名的针对SMS4的攻击。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Some results on cryptanalysis of SMS4 block cipher

SMS4 is a 128-bit block cipher used in the WAPI standard in wireless networks in China. The cipher has attracted much attention in the past several years. This paper consists of two parts. The first part is on the design of the linear diffusion layer L of SMS4. Some observations on L are present, which open out the design rationales of L and such class functions to a great extent. The second part is on the differential attack against SMS4. An effective 19-round differential characteristic is presented. Then, a simple differential attack on 23-round SMS4 is given, which is the best known attack on SMS4 so far.

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Int. J. Appl. Cryptogr.

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