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Paper Abstract and Keywords
Presentation 2020-07-20 16:35
A Study on Construction of Probablistic Homomorphic Encryption Using Stochastic Computing.
Ryusuke Koseki, Rei Ueno, Naofumi Homma (Tohoku Univ.) ISEC2020-23 SITE2020-20 BioX2020-26 HWS2020-16 ICSS2020-10 EMM2020-20
Abstract (in Japanese) (See Japanese page) 
(in English) In this paper, we describe a construct and evaluation of probabilistic homomorphic encryption (PHE)scheme. PHE is constructed by a combination of additive/multiplicative homomorphic encryption scheme andstochastic computing (SC), and is able to evaluate probabilistic addition and multiplication any number of timeswithout bootstrapping. On the other hand, homomorphic evaluation results contain noise owing to SC, and there-fore it is important to evaluate and suppress the noise in PHE. This paper first present a new stochastic additionfor saving the noise at the expense of computational cost/ciphertext sizes because the stochastic addition can bea major bottleneck of PHE in terms of noise. This paper then evaluates the computational performance of PHEconstructions based on major homomorphic encryption schemes, and shows that a new PHE construction usinglattice-based cryptography achieves the highest efficiency in terms of implementation cost in this evaluation.
Keyword (in Japanese) (See Japanese page) 
(in English) Homomorphic Encryption / Stochastic Computing / / / / / /  
Reference Info. IEICE Tech. Rep., vol. 120, no. 112, ISEC2020-23, pp. 61-67, July 2020.
Paper # ISEC2020-23 
Date of Issue 2020-07-13 (ISEC, SITE, BioX, HWS, ICSS, EMM) 
ISSN Online edition: ISSN 2432-6380
Copyright
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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 ISEC2020-23 SITE2020-20 BioX2020-26 HWS2020-16 ICSS2020-10 EMM2020-20

Conference Information
Committee SITE ISEC HWS EMM BioX IPSJ-CSEC IPSJ-SPT ICSS 
Conference Date 2020-07-20 - 2020-07-21 
Place (in Japanese) (See Japanese page) 
Place (in English) Online 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Security, etc. 
Paper Information
Registration To ISEC 
Conference Code 2020-07-SITE-ISEC-HWS-EMM-BioX-CSEC-SPT-ICSS 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) A Study on Construction of Probablistic Homomorphic Encryption Using Stochastic Computing. 
Sub Title (in English)  
Keyword(1) Homomorphic Encryption  
Keyword(2) Stochastic Computing  
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1st Author's Name Ryusuke Koseki  
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 Naofumi Homma  
3rd Author's Affiliation Tohoku University (Tohoku Univ.)
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Speaker Author-1 
Date Time 2020-07-20 16:35:00 
Presentation Time 25 minutes 
Registration for ISEC 
Paper # ISEC2020-23, SITE2020-20, BioX2020-26, HWS2020-16, ICSS2020-10, EMM2020-20 
Volume (vol) vol.120 
Number (no) no.112(ISEC), no.113(SITE), no.114(BioX), no.115(HWS), no.116(ICSS), no.117(EMM) 
Page pp.61-67 
#Pages 7 
Date of Issue 2020-07-13 (ISEC, SITE, BioX, HWS, ICSS, EMM) 

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