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Paper Abstract and Keywords
Presentation 2015-07-02 10:15
Attribute-Based Two-Tier Signatures
Hiroaki Anada (ISIT), Seiko Arita (IISEC), Kouichi Sakurai (Kyushu University) ISEC2015-9 SITE2015-7 ICSS2015-19 EMM2015-17
Abstract (in Japanese) (See Japanese page) 
(in English) An attribute-based signature scheme is a digital signature scheme proposed in 2008 by Maji et al.,
in which a message is associated with a signing policy,
where the signing policy is described as a boolean formula over a signers' attributes.
Only when a signer's attributes satisfy the signing policy, the signer can make a legitimate signature on the message.
On the other hand, a two-tier signature scheme is a digital signature scheme proposed in 2007 by Bellare et al.,
in which a signer receives two tiered secret keys sequentially,
the latter of which is served as a one-time signing key at the timing of signing.
Accordingly, two tiered public keys are issued sequentially.
These two-tier keys fit the Fiat-Shamir signature and enables it to achieve security in the standard model.
In this paper, we construct an attribute-based two-tier signature scheme
that possesses the functions and features of both schemes.
We start with constructing a $Sgm$-protocol for a boolean formula on a bundled witness.
Then we construct a signature bundle scheme
that is existentially unforgeable against chosen-message attacks under the Strong RSA assumption.
Combining these building blocks, we obtain an attribute-based identification scheme.
Finally, by applying the two-tiered keys method, we attain an ABTTS scheme
that is existentially unforgeable against chosen-message attacks
in the standard model under the Strong RSA assumption.
Keyword (in Japanese) (See Japanese page) 
(in English) digital signature / attribute-based / two-tier key / strong RSA assumption / standard model / / /  
Reference Info. IEICE Tech. Rep., vol. 115, no. 119, ISEC2015-9, pp. 1-8, July 2015.
Paper # ISEC2015-9 
Date of Issue 2015-06-25 (ISEC, SITE, ICSS, EMM) 
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 ISEC2015-9 SITE2015-7 ICSS2015-19 EMM2015-17

Conference Information
Conference Date 2015-07-02 - 2015-07-03 
Place (in Japanese) (See Japanese page) 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To ISEC 
Conference Code 2015-07-CSEC-ISEC-SITE-ICSS-EMM-SPT 
Language English 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Attribute-Based Two-Tier Signatures 
Sub Title (in English)  
Keyword(1) digital signature  
Keyword(2) attribute-based  
Keyword(3) two-tier key  
Keyword(4) strong RSA assumption  
Keyword(5) standard model  
1st Author's Name Hiroaki Anada  
1st Author's Affiliation Institute of Systems, Information Technologies and Nanotechnologies (ISIT)
2nd Author's Name Seiko Arita  
2nd Author's Affiliation Institute of Information Security (IISEC)
3rd Author's Name Kouichi Sakurai  
3rd Author's Affiliation Faculty of Information Science and Electrical Engineering, Kyushu University (Kyushu University)
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Date Time 2015-07-02 10:15:00 
Presentation Time 25 
Registration for ISEC 
Paper # IEICE-ISEC2015-9,IEICE-SITE2015-7,IEICE-ICSS2015-19,IEICE-EMM2015-17 
Volume (vol) IEICE-115 
Number (no) no.119(ISEC), no.120(SITE), no.121(ICSS), no.122(EMM) 
Page pp.1-8 
#Pages IEICE-8 
Date of Issue IEICE-ISEC-2015-06-25,IEICE-SITE-2015-06-25,IEICE-ICSS-2015-06-25,IEICE-EMM-2015-06-25 

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