Distinguishing attack on CPB-based cipher COSB-128

Tran Song Dat Phuc; Changhoon Lee

doi:10.14257/ijsia.2016.10.1.32

Distinguishing attack on CPB-based cipher COSB-128

Tran Song Dat Phuc, Changhoon Lee

Dept. of Computer Science and Engineering

Seoul National University of Science and Technology (SNUST)

Research output: Contribution to journal › Article › peer-review

Abstract

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.

Original language	English
Pages (from-to)	355-360
Number of pages	6
Journal	International Journal of Security and its Applications
Volume	10
Issue number	1
DOIs	https://doi.org/10.14257/ijsia.2016.10.1.32
State	Published - 2016

Keywords

Controllable operational substitution block (COSB)
Controllable permutation block (CPB)
Cryptanalysis
Distinguishing Attack

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10.14257/ijsia.2016.10.1.32

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abstract = "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.",

keywords = "Controllable operational substitution block (COSB), Controllable permutation block (CPB), Cryptanalysis, Distinguishing Attack",

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AB - 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.

KW - Controllable operational substitution block (COSB)

KW - Controllable permutation block (CPB)

KW - Cryptanalysis

KW - Distinguishing Attack

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JO - International Journal of Security and its Applications

JF - International Journal of Security and its Applications

IS - 1

ER -

Distinguishing attack on CPB-based cipher COSB-128

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Keywords

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