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Paper Abstract and Keywords
Presentation 2014-07-04 11:30
Quantitative Evaluation of the Key Information That is Learned through Timing Attack -- The Contribution of Bucketing Technique for RSA Cryptosystem --
Yasuyuki Kobayashi, Yuichi Kaji (NAIST), Hiroyuki Seki (Nagoya Univ.), Minoru Ito (NAIST) ISEC2014-35 SITE2014-30 ICSS2014-39 EMM2014-35
Abstract (in Japanese) (See Japanese page) 
(in English) Timing attacks are regarded as serious threats to many practical cryptographic algorithms, but it is difficult to estimate the risk of the attack because we cannot predict the ability and the behavior of attackers. To tackle this issue, Köpf et al. focus on the mutual information between a secret key and timing observations that an attacker acquires. The discussion of this approach gives a certain upper-bound on the risk of timing attacks. Köpf et al. adopted this approach to evaluate the contribution of a bucketing technique that was proposed by themselves, but the mathematical discussion therein needs more improvement. The purpose of this study is to refine the discussion of Köpf.
We assume that element distribution of the running time polynomial distribution, and give the upper-bound of the mutual information that is tighter than the conventional method. Furthermore, Simulation results suggest that proposed method give more precise understanding of the contribution of the bucketing technique.
Keyword (in Japanese) (See Japanese page) 
(in English) Timing Attack / Side-channel Attack / Bucketing of Running Time / Information Theory / Quantitative Information Flow Analysis / Multinomial Distribution / /  
Reference Info. IEICE Tech. Rep., vol. 114, no. 115, ISEC2014-35, pp. 253-258, July 2014.
Paper # ISEC2014-35 
Date of Issue 2014-06-26 (ISEC, SITE, ICSS, EMM) 
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)
Download PDF ISEC2014-35 SITE2014-30 ICSS2014-39 EMM2014-35

Conference Information
Committee ICSS ISEC SITE EMM IPSJ-CSEC IPSJ-SPT  
Conference Date 2014-07-03 - 2014-07-04 
Place (in Japanese) (See Japanese page) 
Place (in English) San-Refure Hakodate 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Security 
Paper Information
Registration To ISEC 
Conference Code 2014-07-ICSS-ISEC-SITE-EMM-CSEC-SPT 
Language English (Japanese title is available) 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Quantitative Evaluation of the Key Information That is Learned through Timing Attack 
Sub Title (in English) The Contribution of Bucketing Technique for RSA Cryptosystem 
Keyword(1) Timing Attack  
Keyword(2) Side-channel Attack  
Keyword(3) Bucketing of Running Time  
Keyword(4) Information Theory  
Keyword(5) Quantitative Information Flow Analysis  
Keyword(6) Multinomial Distribution  
Keyword(7)  
Keyword(8)  
1st Author's Name Yasuyuki Kobayashi  
1st Author's Affiliation Nara Institute of Science and Technology (NAIST)
2nd Author's Name Yuichi Kaji  
2nd Author's Affiliation Nara Institute of Science and Technology (NAIST)
3rd Author's Name Hiroyuki Seki  
3rd Author's Affiliation Nagoya University (Nagoya Univ.)
4th Author's Name Minoru Ito  
4th Author's Affiliation Nara Institute of Science and Technology (NAIST)
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Speaker Author-1 
Date Time 2014-07-04 11:30:00 
Presentation Time 25 minutes 
Registration for ISEC 
Paper # ISEC2014-35, SITE2014-30, ICSS2014-39, EMM2014-35 
Volume (vol) vol.114 
Number (no) no.115(ISEC), no.116(SITE), no.117(ICSS), no.118(EMM) 
Page pp.253-258 
#Pages 6 
Date of Issue 2014-06-26 (ISEC, SITE, ICSS, EMM) 

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