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Differential Cryptanalysis on Block Cipher Skinny with MILP Program

机译:核心计划块密码瘦的差分密码分析

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摘要

With the widespread use of RFID technology and the rapid development of Internet of Things, the research of lightweight block cipher has become one of the hot issues in cryptography research. In recent years, lightweight block ciphers have emerged and are widely used, and their security is also crucial. Skinny-64/192 can be used to protect data security such as the applications of wireless multimedia and wireless sensor networks. In this paper, we use the new method to verify the security of Skinny-64/192. The method is called mixed-integer linear programming (MILP) which can characterize precisely the linear operation and nonlinear operation in a round function. By applying MILP program, we can automatically find a 11-round differential characteristic for Skinny-64/192 with the minimum number of active s-boxes. The probability of differential trail is 2-147, that is, far greater than 2-192 which is the probability of success for an exhaustive search. In addition, comparing this method with the one proposed by Sun et al., we also have a great improvement; that is, no new variables will be added in ShiftRows operation. It can reduce greatly the number of variables and improve the running speed of the computer. Besides, the experimental result proves that Skinny-64/192 is safe on 11-round differential analysis and validates the effectiveness of the MILP method.
机译:随着RFID技术的广泛使用和互联网的快速发展,轻量级块密码的研究已成为密码学研究中的热点问题之一。近年来,已经出现了轻量级块密码,广泛使用,其安全性也至关重要。 Skinny-64/192可用于保护无线多媒体和无线传感器网络的应用等数据安全性。在本文中,我们使用新方法来验证Skinny-64/192的安全性。该方法称为混合整数线性编程(MILP),其可以在圆形功能中精确地表征线性操作和非线性操作。通过应用MILP计划,我们可以自动为Skinny-64/192找到11次差分特性,最小数量的活动S箱。差分跟踪的概率为2-147,即远远大于2-192,这是穷举搜索成功的概率。此外,将此方法与Sun等人提出的方法进行比较,我们也有一个很好的改善;也就是说,在Shiftrows操作中没有添加新的变量。它可以大大减少变量的数量并提高计算机的运行速度。此外,实验结果证明,Skinny-64/192在11次差异分析上是安全的,验证MILP方法的有效性。

著录项

  • 作者

    Pei Zhang; Wenying Zhang;

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  • 年度 2018
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  • 原文格式 PDF
  • 正文语种 eng
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