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Paper Abstract and Keywords
Presentation 2020-11-06 11:20
Speeding Up a Revocable Group Signature Scheme for Crowdsensing
Yuto Nakazawa, Toru Nakanishi (Hiroshima Univ.) ISEC2020-34 SITE2020-31 LOIS2020-14
Abstract (in Japanese) (See Japanese page) 
(in English) In crowdsensing, many users carrying mobile terminals send environmental data and congestion status to the server together with the user’s location information, and the server analyzes the data to perform environmental monitoring and congestion forecast at the city level. In crowdsensing, in order to realize efficient user authentication with privacy protection, a revocable group signature scheme has been proposed, where the burden on the user side is reduced and the revocation check is performed at high speed.However,in this previous scheme,there is a problem in signature generation and verification times because the zero-knowledge proof is performed by two certificates.Therefore, in this research, we speed up the signature generation and verification processes by extending it so that the zero-knowledge proof can be performed with a single certificate.Then, its effectiveness is shown by expetriments based on an implementation on a PC.
Keyword (in Japanese) (See Japanese page) 
(in English) Crowdsensing / Revocable Group Signature / Verifier-Local Revocation / Pairing / / / /  
Reference Info. IEICE Tech. Rep., vol. 120, no. 224, ISEC2020-34, pp. 13-18, Nov. 2020.
Paper # ISEC2020-34 
Date of Issue 2020-10-30 (ISEC, SITE, LOIS) 
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 ISEC2020-34 SITE2020-31 LOIS2020-14

Conference Information
Committee LOIS ISEC SITE  
Conference Date 2020-11-06 - 2020-11-06 
Place (in Japanese) (See Japanese page) 
Place (in English) Online 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To ISEC 
Conference Code 2020-11-LOIS-ISEC-SITE 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Speeding Up a Revocable Group Signature Scheme for Crowdsensing 
Sub Title (in English)  
Keyword(1) Crowdsensing  
Keyword(2) Revocable Group Signature  
Keyword(3) Verifier-Local Revocation  
Keyword(4) Pairing  
1st Author's Name Yuto Nakazawa  
1st Author's Affiliation Hiroshima University (Hiroshima Univ.)
2nd Author's Name Toru Nakanishi  
2nd Author's Affiliation Hiroshima University (Hiroshima Univ.)
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Date Time 2020-11-06 11:20:00 
Presentation Time 25 
Registration for ISEC 
Paper # IEICE-ISEC2020-34,IEICE-SITE2020-31,IEICE-LOIS2020-14 
Volume (vol) IEICE-120 
Number (no) no.224(ISEC), no.225(SITE), no.226(LOIS) 
Page pp.13-18 
#Pages IEICE-6 
Date of Issue IEICE-ISEC-2020-10-30,IEICE-SITE-2020-10-30,IEICE-LOIS-2020-10-30 

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