Similarity Property and Slide Attack of Block Cipher FESH

This paper focuses on similarity properties and extension of the classical slide property of block ciphers. Taking FESH, an award-winning block cipher of the National Cryptographic Algorithm Design Competition 2019, as an example, similarity properties of the encryption and key transformation are fo...

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Main Authors: Yafei Zheng, Wenling Wu
Format: Article
Language:English
Published: Hindawi-IET 2023-01-01
Series:IET Information Security
Online Access:http://dx.doi.org/10.1049/2023/7171600
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author Yafei Zheng
Wenling Wu
author_facet Yafei Zheng
Wenling Wu
author_sort Yafei Zheng
collection DOAJ
description This paper focuses on similarity properties and extension of the classical slide property of block ciphers. Taking FESH, an award-winning block cipher of the National Cryptographic Algorithm Design Competition 2019, as an example, similarity properties of the encryption and key transformation are found, owing to the similar structures that the encryption and key transformation adopted, and the constants generation. Based on the similarity properties, extended slide properties can be constructed for FESH. Slide attacks of FESH are then proposed. The similarity properties and extended slide property are immune to the increasing of iterated rounds, i.e., it cannot be avoided by increasing the round number of FESH. Furthermore, extended slide property helps relaxing the strict requirements of the subkeys in slide attacks. Taking Feistel and SPN structures as examples, frameworks of slide attacks based on the extended slide properties are presented. Slide attack of FESH is exactly a concrete example of SPN structure.
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spelling doaj.art-cfcefa6c30fe4eccb98a5d11c64647ac2023-12-22T00:00:32ZengHindawi-IETIET Information Security1751-87172023-01-01202310.1049/2023/7171600Similarity Property and Slide Attack of Block Cipher FESHYafei Zheng0Wenling Wu1Trusted Computing and Information Assurance LaboratoryTrusted Computing and Information Assurance LaboratoryThis paper focuses on similarity properties and extension of the classical slide property of block ciphers. Taking FESH, an award-winning block cipher of the National Cryptographic Algorithm Design Competition 2019, as an example, similarity properties of the encryption and key transformation are found, owing to the similar structures that the encryption and key transformation adopted, and the constants generation. Based on the similarity properties, extended slide properties can be constructed for FESH. Slide attacks of FESH are then proposed. The similarity properties and extended slide property are immune to the increasing of iterated rounds, i.e., it cannot be avoided by increasing the round number of FESH. Furthermore, extended slide property helps relaxing the strict requirements of the subkeys in slide attacks. Taking Feistel and SPN structures as examples, frameworks of slide attacks based on the extended slide properties are presented. Slide attack of FESH is exactly a concrete example of SPN structure.http://dx.doi.org/10.1049/2023/7171600
spellingShingle Yafei Zheng
Wenling Wu
Similarity Property and Slide Attack of Block Cipher FESH
IET Information Security
title Similarity Property and Slide Attack of Block Cipher FESH
title_full Similarity Property and Slide Attack of Block Cipher FESH
title_fullStr Similarity Property and Slide Attack of Block Cipher FESH
title_full_unstemmed Similarity Property and Slide Attack of Block Cipher FESH
title_short Similarity Property and Slide Attack of Block Cipher FESH
title_sort similarity property and slide attack of block cipher fesh
url http://dx.doi.org/10.1049/2023/7171600
work_keys_str_mv AT yafeizheng similaritypropertyandslideattackofblockcipherfesh
AT wenlingwu similaritypropertyandslideattackofblockcipherfesh