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Paper Abstract and Keywords
Presentation 2014-03-28 15:10
Higher Order Differential Property of LBlock(II)
Naoki Shibayama (Japan Air Self-Defense Force), Toshinobu Kaneko (Tokyo Univ. of Science) ICSS2013-94
Abstract (in Japanese) (See Japanese page) 
(in English) LBlock is a block cipher with 64-bit block length and 80-bit key length, which was proposed by Wu et.al in 2011.It has been reported that LBlock has two kinds of 15-round saturation characteristics, in which 24 bits of the output of 15-th round 60-th order differential equals to zero.By using these characteristics, it is possible to apply the higher order differential attack to 21-round LBlock.This paper shows a new higher order differential property of LBlock.We found six kinds of new 15-round saturation characteristics using 60-th order differential, and estimates the costs of attack exploiting the characteristics.
Keyword (in Japanese) (See Japanese page) 
(in English) Block Cipher / LBlock / Higher Order Differential Propery / Cryptanalysis / / / /  
Reference Info. IEICE Tech. Rep., vol. 113, no. 502, ICSS2013-94, pp. 237-242, March 2014.
Paper # ICSS2013-94 
Date of Issue 2014-03-20 (ICSS) 
ISSN Print edition: ISSN 0913-5685    Online edition: ISSN 2432-6380
Copyright
and
reproduction		 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. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034)
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Conference Information
Committee ICSS IPSJ-SPT  
Conference Date 2014-03-27 - 2014-03-28 
Place (in Japanese) (See Japanese page) 
Place (in English) Meio Univiersity 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Communication Security, Security Psychology & Trust, etc. 
Paper Information
Registration To ICSS 
Conference Code 2014-03-ICSS-SPT 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Higher Order Differential Property of LBlock(II) 
Sub Title (in English)  
Keyword(1) Block Cipher  
Keyword(2) LBlock  
Keyword(3) Higher Order Differential Propery  
Keyword(4) Cryptanalysis  
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1st Author's Name Naoki Shibayama  
1st Author's Affiliation Japan Air Self-Defense Force (Japan Air Self-Defense Force)
2nd Author's Name Toshinobu Kaneko  
2nd Author's Affiliation Tokyo University of Science (Tokyo Univ. of Science)
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Speaker Author-1 
Date Time 2014-03-28 15:10:00 
Presentation Time 25 minutes 
Registration for ICSS 
Paper # ICSS2013-94 
Volume (vol) vol.113 
Number (no) no.502 
Page pp.237-242 
#Pages 6 
Date of Issue 2014-03-20 (ICSS) 

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