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Paper Abstract and Keywords
Presentation 2015-03-04 09:25
Scalar Multiplication Algorithm with Resistance for Side-channel Attacks
Keisuke Kito (JAIST), Atsuko Miyaji (JAIST/JST CREST), Ryota Takahashi (JAIST) ICSS2014-77
Abstract (in Japanese) (See Japanese page) 
(in English) Elliptic curve cryptosystems require shorter key length than traditional cryptosystems. It is good that scalar multiplication algorithm has small computational cost and resistance for side-channel attacks. Regular scalar multiplication has SPA and SEA resistance and is proposed by Marc Joye.
In this paper, we propose more efficient scalar multiplication algorithms with resistance for side-channel attacks on affine coordinate. Computational cost can be reduced by scanning scalar $k$ with 2-bit simultaneously. And to keep resistance for side-channel attacks, we use a fact that computational cost of double-add and triple arithmetic on affine coordinate are same under $S=M$.
Keyword (in Japanese) (See Japanese page) 
(in English) Elliptic curve cryptosystems / Scalar Multiplication / Side-channel Attacks / SPA-type Attacks / SEA / / /  
Reference Info. IEICE Tech. Rep., vol. 114, no. 489, ICSS2014-77, pp. 85-90, March 2015.
Paper # ICSS2014-77 
Date of Issue 2015-02-24 (ICSS) 
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. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034)
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Conference Information
Committee ICSS  
Conference Date 2015-03-03 - 2015-03-04 
Place (in Japanese) (See Japanese page) 
Place (in English) Meio Univiersity 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Communication Security, etc. 
Paper Information
Registration To ICSS 
Conference Code 2015-03-ICSS 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Scalar Multiplication Algorithm with Resistance for Side-channel Attacks 
Sub Title (in English)  
Keyword(1) Elliptic curve cryptosystems  
Keyword(2) Scalar Multiplication  
Keyword(3) Side-channel Attacks  
Keyword(4) SPA-type Attacks  
Keyword(5) SEA  
1st Author's Name Keisuke Kito  
1st Author's Affiliation Japan Advanced Institute of Science and Technology (JAIST)
2nd Author's Name Atsuko Miyaji  
2nd Author's Affiliation Japan Advanced Institute of Science and Technology/JST CREST (JAIST/JST CREST)
3rd Author's Name Ryota Takahashi  
3rd Author's Affiliation Japan Advanced Institute of Science and Technology (JAIST)
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Date Time 2015-03-04 09:25:00 
Presentation Time 25 
Registration for ICSS 
Paper # IEICE-ICSS2014-77 
Volume (vol) IEICE-114 
Number (no) no.489 
Page pp.85-90 
#Pages IEICE-6 
Date of Issue IEICE-ICSS-2015-02-24 

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