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Paper Abstract and Keywords
Presentation 2023-07-25 09:00
Side-Channel Attacks on Unrolled Implementation of Trivium
Soichiro Kobayashi, Rei Ueno (Tohoku Univ.), Yosuke Todo (NTT), Naofumi Homma (Tohoku Univ.) ISEC2023-44 SITE2023-38 BioX2023-47 HWS2023-44 ICSS2023-41 EMM2023-44
Abstract (in Japanese) (See Japanese page) 
(in English) This paper describes a side-channel attack (SCA) on unrolled implementation of Trivium. Previous SCAs on Trivium, such as correlation power analysis (CPA), use side-channel information from the initial rounds (1--80 rounds) before sufficient agitation. On the other hand, the unrolled implementation which processes multiple rounds (e.g., 288 rounds) at once is mainly used from the viewpoints of latency and energy efficiency, and the previous SCAs on Trivium cannot be applied to the unrolled implementation. In this paper, we propose a method based on linearization to estimate the intermediate values using side-channel information from later rounds by a new key recovery method. We also show that the proposed method can recover the secret key of 288 rounds unrolled implementation considered the most energy-efficient one.
Keyword (in Japanese) (See Japanese page) 
(in English) Stream Cipher / Trivium / Unrolled Implementation / Side-Channel Attack / Correlation Power Analysis / / /  
Reference Info. IEICE Tech. Rep., vol. 123, no. 129, ISEC2023-44, pp. 194-201, July 2023.
Paper # ISEC2023-44 
Date of Issue 2023-07-17 (ISEC, SITE, BioX, HWS, ICSS, EMM) 
ISSN 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 ISEC2023-44 SITE2023-38 BioX2023-47 HWS2023-44 ICSS2023-41 EMM2023-44

Conference Information
Committee EMM BioX ISEC SITE ICSS HWS IPSJ-CSEC IPSJ-SPT 
Conference Date 2023-07-24 - 2023-07-25 
Place (in Japanese) (See Japanese page) 
Place (in English) Hokkaido Jichiro Kaikan 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To ISEC 
Conference Code 2023-07-EMM-BioX-ISEC-SITE-ICSS-HWS-CSEC-SPT 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Side-Channel Attacks on Unrolled Implementation of Trivium 
Sub Title (in English)  
Keyword(1) Stream Cipher  
Keyword(2) Trivium  
Keyword(3) Unrolled Implementation  
Keyword(4) Side-Channel Attack  
Keyword(5) Correlation Power Analysis  
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1st Author's Name Soichiro Kobayashi  
1st Author's Affiliation Tohoku University (Tohoku Univ.)
2nd Author's Name Rei Ueno  
2nd Author's Affiliation Tohoku University (Tohoku Univ.)
3rd Author's Name Yosuke Todo  
3rd Author's Affiliation Nippon Telegraph and Telephone Corporation (NTT)
4th Author's Name Naofumi Homma  
4th Author's Affiliation Tohoku University (Tohoku Univ.)
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Speaker Author-1 
Date Time 2023-07-25 09:00:00 
Presentation Time 20 minutes 
Registration for ISEC 
Paper # ISEC2023-44, SITE2023-38, BioX2023-47, HWS2023-44, ICSS2023-41, EMM2023-44 
Volume (vol) vol.123 
Number (no) no.129(ISEC), no.130(SITE), no.131(BioX), no.132(HWS), no.133(ICSS), no.134(EMM) 
Page pp.194-201 
#Pages 8 
Date of Issue 2023-07-17 (ISEC, SITE, BioX, HWS, ICSS, EMM) 

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