文章基本信息

标题：Distinguishing Attack on CPB-Based Cipher COSB-128
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作者：Tran Song Dat Phuc ; Changhoon Lee
期刊名称：International Journal of Security and Its Applications
印刷版ISSN：1738-9976
出版年度：2016
卷号：10
期号：1
页码：355-360
DOI：10.14257/ijsia.2016.10.1.32
出版社：SERSC
摘要：COSB-128 is a type of fast controllable permutation block (CPB), which is designed to ensure a high speed of data transformation and high stability to differential analysis. In this paper, we present the possibility to distinguish between a 10-round COSB-128 and a 128-bit random permutation through a full 10-round related-key difference characteristic by proposing a distinguishing attack with high probability on this cipher. This attack is another result from previous study of related-key attack on COSB-128 [2]. From that point, it reveals the potential to extend to the related-key recovery attack on this algorithm in the future.
关键词：Controllable permutation block (CPB); Controllable operational ; substitution block (COSB); Distinguishing Attack; Cryptanalysis