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Paper Abstract and Keywords
Presentation 2015-03-02 10:30
Accelerating QUAD Stream Cipher using Optimal Extension Field on GPU
Satoshi Tanaka (ISIT/Kyushu Univ.), Chen-Mou Cheng (Kyushu Univ.), Takanori Yasuda (ISIT), Kouichi Sakurai (ISIT/Kyushu Univ.) IT2014-62 ISEC2014-75 WBS2014-54
Abstract (in Japanese) (See Japanese page) 
(in English) Evaluating non-linear multivariate polynomial systems over finite
fields is an important subroutine for QUAD stream cipher.
The security of QUAD definitely becomes lower if a larger field is used instead of $GF(2)$ given the same number of bits in the key.
However, we still would like to use larger fields because QUAD tends to run faster at the same level of security if a larger field is used.
In this paper, we substitute Optimal Extension Fields (OEF) for $text{GF}({2}^{32})$ to a finite field of multivariate quadratic polynomials.
QUAD over $text{GF}({2}^{32}-5)$ with 64 polynomials in 32 variables is 9 times faster than over $text{GF}({2}^{32})$ on GPU.
Keyword (in Japanese) (See Japanese page) 
(in English) GPGPU / stream cipher / multivariate public-key cryptography / optimal extension field / / / /  
Reference Info. IEICE Tech. Rep., vol. 114, no. 471, ISEC2014-75, pp. 1-4, March 2015.
Paper # ISEC2014-75 
Date of Issue 2015-02-23 (IT, ISEC, WBS) 
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)
Download PDF IT2014-62 ISEC2014-75 WBS2014-54

Conference Information
Committee ISEC IT WBS  
Conference Date 2015-03-02 - 2015-03-03 
Place (in Japanese) (See Japanese page) 
Place (in English) The University of Kitakyushu 
Topics (in Japanese) (See Japanese page) 
Topics (in English) joint meeting of IT, ISEC, and WBS 
Paper Information
Registration To ISEC 
Conference Code 2015-03-ISEC-IT-WBS 
Language English (Japanese title is available) 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Accelerating QUAD Stream Cipher using Optimal Extension Field on GPU 
Sub Title (in English)  
Keyword(1) GPGPU  
Keyword(2) stream cipher  
Keyword(3) multivariate public-key cryptography  
Keyword(4) optimal extension field  
1st Author's Name Satoshi Tanaka  
1st Author's Affiliation Institute of Systems, Information Technologies and Nanotechnologies/Kyushu University (ISIT/Kyushu Univ.)
2nd Author's Name Chen-Mou Cheng  
2nd Author's Affiliation Kyushu University (Kyushu Univ.)
3rd Author's Name Takanori Yasuda  
3rd Author's Affiliation Institute of Systems, Information Technologies and Nanotechnologies (ISIT)
4th Author's Name Kouichi Sakurai  
4th Author's Affiliation Institute of Systems, Information Technologies and Nanotechnologies/Kyushu University (ISIT/Kyushu Univ.)
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Date Time 2015-03-02 10:30:00 
Presentation Time 25 
Registration for ISEC 
Paper # IEICE-IT2014-62,IEICE-ISEC2014-75,IEICE-WBS2014-54 
Volume (vol) IEICE-114 
Number (no) no.470(IT), no.471(ISEC), no.472(WBS) 
Page pp.1-4 
#Pages IEICE-4 
Date of Issue IEICE-IT-2015-02-23,IEICE-ISEC-2015-02-23,IEICE-WBS-2015-02-23 

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