Title: | quadratic equations from a kind of s-boxes |
Author: | Xie Jia
; Cao Weiwei
; Wang TianZe
|
Source: | Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
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Conference Name: | 10th International Workshop on Information Security Applications
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Conference Date: | AUG 25-27,
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Issued Date: | 2009
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Conference Place: | Busan, SOUTH KOREA
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Keyword: | algebraic attack
; Trace form representation
; APN functions
; power functions
|
Publisher: | INFORMATION SECURITY APPLICATIONS
|
Publish Place: | HEIDELBERGER PLATZ 3, D-14197 BERLIN, GERMANY
|
Indexed Type: | istp,ei
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ISSN: | 0302-9743
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ISBN: | 978-3-642-10837-2
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Department: | Xie, Jia Chinese Acad Sci, State Key Lab Informat Securt, Inst Software, Beijing 100790, Peoples R China.
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Sponsorship: | Elect & Telecommun Res Inst, Korea Internet & Security Agcy, Minist Public Adm & Security, Korea Commun Commiss, ST Ltd
|
English Abstract: | Algebraic attack studies ciphers from the point of view of solving equations. It is important to measure the security of block ciphers how many linearly independent bi-affine or quadratic equations they satisfy. As the S-box is the main nonlinear part of block ciphers, it really makes sense to get the number of linearly independent bi-affine and quadratic equations that an S-box satisfies to analyse the security of block ciphers. The article answers this question for two S-boxes based on APN power functions, and shows how to find out the equations by two toy examples. The techniques can be generalized to other S-boxes constructed by power functions. According to these conclusions, we can estimate the safety of such kind of block ciphers. |
Language: | 英语
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Content Type: | 会议论文
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URI: | http://ir.iscas.ac.cn/handle/311060/8218
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Appears in Collections: | 中科院软件所图书馆_2009年期刊/会议论文
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Recommended Citation: |
Xie Jia,Cao Weiwei,Wang TianZe. quadratic equations from a kind of s-boxes[C]. 见:10th International Workshop on Information Security Applications. Busan, SOUTH KOREA. AUG 25-27,.
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