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Paper Abstract and Keywords
Presentation 2020-07-20 16:10
Short Lattice Signatures in the Standard Model with Efficient Tag Generation and Its Implementation
Kaisei Kajita, Go Ohtake, Kazuto Ogawa (NHK), Koji Nuida, Tsuyoshi Takagi (Univ. of Tokyo) ISEC2020-22 SITE2020-19 BioX2020-25 HWS2020-15 ICSS2020-9 EMM2020-19
Abstract (in Japanese) (See Japanese page) 
(in English) We propose new short signature schemes under the Ring-SIS assumption in the standard model by revisiting an existing construction in [Ducas and Micciancio, CRYPTO 2014]. We firstly construct a scheme under mild security condition that is existentially unforgeable against random message attack with auxiliary information. We then convert the mildly secure scheme to a fully secure scheme by applying a trapdoor commitment scheme.Our scheme enables the generation of tags from messages and the collision of multiple tags, which improves reduction loss. In accordance with two kinds of parameter set for tag generation, we get two signature scheme with different properties of reduction loss and verification key size. Moreover, we confirm properties of our two proposed schemes by implementations.
Keyword (in Japanese) (See Japanese page) 
(in English) Digital signatures / RIng-SIS assumption / Reductgion loss / Trapdoor commitment / Implementation / / /  
Reference Info. IEICE Tech. Rep., vol. 120, no. 112, ISEC2020-22, pp. 53-60, July 2020.
Paper # ISEC2020-22 
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 ISEC2020-22 SITE2020-19 BioX2020-25 HWS2020-15 ICSS2020-9 EMM2020-19

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) Short Lattice Signatures in the Standard Model with Efficient Tag Generation and Its Implementation 
Sub Title (in English)  
Keyword(1) Digital signatures  
Keyword(2) RIng-SIS assumption  
Keyword(3) Reductgion loss  
Keyword(4) Trapdoor commitment  
Keyword(5) Implementation  
Keyword(6)  
Keyword(7)  
Keyword(8)  
1st Author's Name Kaisei Kajita  
1st Author's Affiliation Japan Broadcasting Corporation (NHK)
2nd Author's Name Go Ohtake  
2nd Author's Affiliation Japan Broadcasting Corporation (NHK)
3rd Author's Name Kazuto Ogawa  
3rd Author's Affiliation Japan Broadcasting Corporation (NHK)
4th Author's Name Koji Nuida  
4th Author's Affiliation The Universitiy of Tokyo (Univ. of Tokyo)
5th Author's Name Tsuyoshi Takagi  
5th Author's Affiliation The Universitiy of Tokyo (Univ. of Tokyo)
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Speaker Author-1 
Date Time 2020-07-20 16:10:00 
Presentation Time 25 minutes 
Registration for ISEC 
Paper # ISEC2020-22, SITE2020-19, BioX2020-25, HWS2020-15, ICSS2020-9, EMM2020-19 
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.53-60 
#Pages 8 
Date of Issue 2020-07-13 (ISEC, SITE, BioX, HWS, ICSS, EMM) 

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