Please use this identifier to cite or link to this item: http://dlib.scu.ac.ir/handle/Hannan/508161
Title: Analysis of permutation choices for enhanced generalised Feistel structure with SP-type round function
Authors: Lei Zhang;Wenling Wu
Year: 2017
Publisher: IET
Abstract: Since the proposition of improved generalised Feistel structure (GFS), many researches and applications have been published. In this study, the authors further enhance the improved GFS with SP-type round function by extending the sub-block-wise permutation to word-wise permutation which can have better diffusion and security effect. Then, they study the security effect of different permutation choices for this kind of enhanced GFS cipher with SP-type round function. By proving several propositions about the equivalent situation, they can eliminate isomorphic permutations so as to narrow down the candidate space notably and propose a method to compute the number of effective permutation candidates. Finally, they take three typical scenes as example, and for each experimental scene, they compute the number of effective permutation candidates and exhaustively evaluate their security results. They also give an optimum permutation as example for each scene.
URI: http://dl.kums.ac.ir/handle/Hannan/508161
volume: 11
issue: 3
More Information: 121,
128
Appears in Collections:2017

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Title: Analysis of permutation choices for enhanced generalised Feistel structure with SP-type round function
Authors: Lei Zhang;Wenling Wu
Year: 2017
Publisher: IET
Abstract: Since the proposition of improved generalised Feistel structure (GFS), many researches and applications have been published. In this study, the authors further enhance the improved GFS with SP-type round function by extending the sub-block-wise permutation to word-wise permutation which can have better diffusion and security effect. Then, they study the security effect of different permutation choices for this kind of enhanced GFS cipher with SP-type round function. By proving several propositions about the equivalent situation, they can eliminate isomorphic permutations so as to narrow down the candidate space notably and propose a method to compute the number of effective permutation candidates. Finally, they take three typical scenes as example, and for each experimental scene, they compute the number of effective permutation candidates and exhaustively evaluate their security results. They also give an optimum permutation as example for each scene.
URI: http://dl.kums.ac.ir/handle/Hannan/508161
volume: 11
issue: 3
More Information: 121,
128
Appears in Collections:2017

Files in This Item:
File Description SizeFormat 
7912436.pdf1.12 MBAdobe PDFThumbnail
Preview File
Title: Analysis of permutation choices for enhanced generalised Feistel structure with SP-type round function
Authors: Lei Zhang;Wenling Wu
Year: 2017
Publisher: IET
Abstract: Since the proposition of improved generalised Feistel structure (GFS), many researches and applications have been published. In this study, the authors further enhance the improved GFS with SP-type round function by extending the sub-block-wise permutation to word-wise permutation which can have better diffusion and security effect. Then, they study the security effect of different permutation choices for this kind of enhanced GFS cipher with SP-type round function. By proving several propositions about the equivalent situation, they can eliminate isomorphic permutations so as to narrow down the candidate space notably and propose a method to compute the number of effective permutation candidates. Finally, they take three typical scenes as example, and for each experimental scene, they compute the number of effective permutation candidates and exhaustively evaluate their security results. They also give an optimum permutation as example for each scene.
URI: http://dl.kums.ac.ir/handle/Hannan/508161
volume: 11
issue: 3
More Information: 121,
128
Appears in Collections:2017

Files in This Item:
File Description SizeFormat 
7912436.pdf1.12 MBAdobe PDFThumbnail
Preview File