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Paper Abstract and Keywords
Presentation 2012-07-20 10:55
A New Higher Order Differential Property of Hierocrypt
Tetsuhiro Takahashi, Toshinobu Kaneko (TUS) ISEC2012-30 SITE2012-26 ICSS2012-32 EMM2012-22
Abstract (in Japanese) (See Japanese page) 
(in English) Hierocrypt is a family of block ciphers with SPN structure proposed by Toshiba. Hierocrypt-L1 is for 64-bit block length, and Hierocrypt-3 is for 128-bit block length. For higher order differential property, it has been shown 8-th order differential characteristic for one round (two S-box layers) and 32-nd order differential characteristic for two rounds (four S-box layers). We searched for 8$n$-th to 32-nd order differential property comprehensively for Hierocrypt-L1 and Hierocrypt-3. As a result, we found new higher order differential characteristics for three S-box layers of 16-th and 24-th order differential property. We show that these characteristics are based on the structure of permitation matrixes $mds_{\rm L}$ and $MDS_{\rm H}$.
Keyword (in Japanese) (See Japanese page) 
(in English) Block Cipher / Hierocrypt-L1 / Hierocrypt-3 / Higher Order Differential Characteristics / Saturation Characteristics / / /  
Reference Info. IEICE Tech. Rep., vol. 112, no. 126, ISEC2012-30, pp. 151-158, July 2012.
Paper # ISEC2012-30 
Date of Issue 2012-07-12 (ISEC, SITE, ICSS, EMM) 
ISSN Print edition: ISSN 0913-5685  Online edition: ISSN 2432-6380
All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (No. 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034)
Download PDF ISEC2012-30 SITE2012-26 ICSS2012-32 EMM2012-22

Conference Information
Conference Date 2012-07-19 - 2012-07-20 
Place (in Japanese) (See Japanese page) 
Place (in English)  
Topics (in Japanese) (See Japanese page) 
Topics (in English) Security 
Paper Information
Registration To ISEC 
Conference Code 2012-07-EMM-ISEC-SITE-ICSS-CSEC-SPT 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) A New Higher Order Differential Property of Hierocrypt 
Sub Title (in English)  
Keyword(1) Block Cipher  
Keyword(2) Hierocrypt-L1  
Keyword(3) Hierocrypt-3  
Keyword(4) Higher Order Differential Characteristics  
Keyword(5) Saturation Characteristics  
1st Author's Name Tetsuhiro Takahashi  
1st Author's Affiliation Tokyo University of Science (TUS)
2nd Author's Name Toshinobu Kaneko  
2nd Author's Affiliation Tokyo University of Science (TUS)
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Date Time 2012-07-20 10:55:00 
Presentation Time 25 
Registration for ISEC 
Paper # IEICE-ISEC2012-30,IEICE-SITE2012-26,IEICE-ICSS2012-32,IEICE-EMM2012-22 
Volume (vol) IEICE-112 
Number (no) no.126(ISEC), no.127(SITE), no.128(ICSS), no.129(EMM) 
Page pp.151-158 
#Pages IEICE-8 
Date of Issue IEICE-ISEC-2012-07-12,IEICE-SITE-2012-07-12,IEICE-ICSS-2012-07-12,IEICE-EMM-2012-07-12 

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