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Paper Abstract and Keywords
Presentation 2018-03-09 09:00
A Note on Security Notions of Anonymity in Identity-Based Encryption -- Case of ID-CCA2 Security --
Honomu Ohtomo, Taroh Sasaki, Atsushi Fujioka (Kanagawa Univ.) IT2017-139 ISEC2017-127 WBS2017-120
Abstract (in Japanese) (See Japanese page) 
(in English) Identity-Based Encryption (IBE) is a type of Public-Key Encryption. The IND security (indistinguishability) and the ANO security (anonymity) have been proposed as the security in IBE. The anonymity is defined using a game between an adversary and a challenger. Abdalla et al. propose the ANO-LOR-ATK model however no other models have been proposed. Therefore, the ANO-SW-ATK model, the ANO-ROR-ATK model and the ANO-PR-ATK model are proposed in ISEC 2016-71, and then a part of relations among the anonymity defnitions in the case of ID-CCA2 are clarifid in ISEC 2017-85. This paper clarifies all relations, and show that the SW-ATK model is the best among them.
Keyword (in Japanese) (See Japanese page) 
(in English) Identity-Based Encryption / Anonymity / / / / / /  
Reference Info. IEICE Tech. Rep., vol. 117, no. 488, ISEC2017-127, pp. 213-218, March 2018.
Paper # ISEC2017-127 
Date of Issue 2018-03-01 (IT, ISEC, WBS) 
ISSN Print edition: ISSN 0913-5685    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 IT2017-139 ISEC2017-127 WBS2017-120

Conference Information
Committee WBS IT ISEC  
Conference Date 2018-03-08 - 2018-03-09 
Place (in Japanese) (See Japanese page) 
Place (in English) Katsusika Campas, Tokyo University of Science 
Topics (in Japanese) (See Japanese page) 
Topics (in English) joint meeting of IT, ISEC, and WBS 
Paper Information
Registration To ISEC 
Conference Code 2018-03-WBS-IT-ISEC 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) A Note on Security Notions of Anonymity in Identity-Based Encryption 
Sub Title (in English) Case of ID-CCA2 Security 
Keyword(1) Identity-Based Encryption  
Keyword(2) Anonymity  
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1st Author's Name Honomu Ohtomo  
1st Author's Affiliation Kanagawa University (Kanagawa Univ.)
2nd Author's Name Taroh Sasaki  
2nd Author's Affiliation Kanagawa University (Kanagawa Univ.)
3rd Author's Name Atsushi Fujioka  
3rd Author's Affiliation Kanagawa University (Kanagawa Univ.)
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Speaker Author-1 
Date Time 2018-03-09 09:00:00 
Presentation Time 25 minutes 
Registration for ISEC 
Paper # IT2017-139, ISEC2017-127, WBS2017-120 
Volume (vol) vol.117 
Number (no) no.487(IT), no.488(ISEC), no.489(WBS) 
Page pp.213-218 
#Pages 6 
Date of Issue 2018-03-01 (IT, ISEC, WBS) 

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