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Known-key distinguishers on 15-round 4-branch type-2 generalised Feistel networks with single substitution–permutation functions and near-collision attacks on its hashing modes

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Known-key distinguishers on 15-round 4-branch type-2 generalised Feistel networks with single substitution–permutation functions and near-collision attacks on its hashing modes

Content Provider	IET Digital Library
Author	Dong, Le Wang, Yanling Wu, Wenling Zou, Jian
Abstract	Generalised Feistel network (GFN) is a popular design for block ciphers and hash functions. The round function of the network often chooses a substitution–permutation (SP) transformation (consists of a subkey XOR, an S-boxes layer and a linear layer). In 2011, Bogdanov and Shibutani provided another choice to build round functions, namely the double SP-functions, which has two SP-layers in series. They showed that a 4-branch type-2 GFN with double SP-functions was stronger than the one with single SP-function in terms of the number of active S-boxes in a differential or linear cryptanalysis, but some subsequent results showed that the double SP-function is the weaker one in some known-key scenarios and hashing modes. In this study, the authors present a new result of the 4-branch type-2 GFN, whose round function is a single SP-function. They show some 15-round truncated differential distinguishers for this network with four usual parameters by utilising some rebound attack techniques. Based on these distinguishers, they construct some 15-round near-collision attacks on the Matyas–Meyer–Oseas and Miyaguchi–Preneel compression function modes in which the 4-branch type-2 GFN with the single SP-function is used.
Starting Page	277
Ending Page	283
Page Count	7
ISSN	17518709
Volume Number	9
e-ISSN	17518717
Issue Number	Issue 5, Sep (2015)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-ifs/9/5
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-ifs.2014.0402
Journal	IET Information Security
Publisher Date	2015-02-18
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	15-round 4-branch Type-2 Generalised Feistel Networks 15-round Near-collision Attacks 4-branch Type-2 GFN Block Ciphers Cryptography Data Security Differential Cryptanalysis Double SP-functions File Organisation Hash Function Hashing Mode Known-key Distinguisher Linear Cryptanalysis Linear Layer Matyas–Meyer–Oseas Miyaguchi–Preneel Compression Function Modes Near-collision Attack Rebound Attack Technique S-boxes Layer Single SP-function Single Substitution Permutation Function SP Transformation SP-Layer Subkey XOR Substitution Permutation Transformation
Content Type	Text
Resource Type	Article
Subject	Computer Networks and Communications Information Systems Software

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