化约圆矩形的积分攻击

2015 IEEE 2nd International Conference on Cyber Security and Cloud Computing Pub Date : 2015-11-03 DOI:10.1109/CSCloud.2015.15

Haruhisa Kosuge, Hidema Tanaka, Keisuke Iwai, T. Kurokawa

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引用次数: 4

摘要

RECTANGLE是由Zhang等人(轻量级密码学研讨会2015)提出的64位分组密码，密钥长度为80和128位。积分攻击是分组密码的典型评估工具之一。设计师展示了7轮整体区分器。另一方面，利用我们提出的搜索积分区分符的方法，我们找到了具有平衡列的8轮积分区分符。本文给出了化约圆矩形的第一个积分攻击。基于8轮区分符，利用部分和技术攻击计算复杂度为2^109.98的12轮RECTANGLE-128。此外，我们还可以攻击计算复杂度为270.08的10圆矩形-80。

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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Integral Attack on Reduced-Round Rectangle

RECTANGLE is a 64-bit block cipher with 80 and 128-bit key length proposed by Zhang et al(Lightweight Cryptography Workshop 2015). Integral attack is one of the typical evaluation tools of block cipher. The designers showed 7-round integral distinguisher. On the other hand, we find 8-round integral distinguisher which has balanced columns by our proposal search method of integral distinguisher. In this paper, we present the first integral attack on reduced-round RECTANGLE. Based on 8-round distinguisher, we can attack 12-round RECTANGLE-128 with computational complexity 2^109.98 with partial sum technique. Also, we can attack 10-round RECTANGLE-80 with computational complexity 270.08.

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2015 IEEE 2nd International Conference on Cyber Security and Cloud Computing

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