Information: Join today and make your research activities more affordable! Technical workshop participation fees and annual registration fees are available at member rates.
Notice: [Important] Announcement of Changes to Registration Fee Payment and Manuscript Upload Procedures for IEICE Technical Meetings
IEICE Technical Committee Submission System
Conference Paper's Information		 Online Proceedings
[Sign in]
Tech. Rep. Archives
 Go Top Page Go Previous   [Japanese] / [English] 

Paper Abstract and Keywords
Presentation 2018-07-25 09:55
Truly Efficient Robust Secret Sharing for the Real World
Yohei Watanabe (UEC), Kazuma Ohara (UEC/NEC), Mitsugu Iwamoto, Kazuo Ohta (UEC) ISEC2018-13 SITE2018-5 HWS2018-10 ICSS2018-16 EMM2018-12
Abstract (in Japanese) (See Japanese page) 
(in English) Robust secret sharing is secret sharing with the following robustness property: An original message can be recovered even if the (predetermined) number of shares are maliciously modified. At EUROCRYPT 2012, Cevallos, Fehr, Ostrovsky, and Rabani (CFOR) proposed a robust secret sharing scheme secure against maximal corruption, and estimated that $O(kappa + n)$ bits of a share size are required for the scheme, where $kappa$ is a security parameter and $n$ is the number of players. In this paper, we first unveil a flaw in the original security proof, and show how to fix it. Unfortunately, the fixed proof gives $O(kappa + n^2)$ bits of a share size, which is definitely larger than originally estimated. We then give a new proof by improving Cevallos et al.'s approach, and show that the CFOR scheme actually achieves $O(kappa +n)$ bits of a share size. Although a more efficient scheme exists in an asymptotic sense, the share size estimated in this paper is the most efficient among all existing schemes in the sense of concrete parameters, even if we consider a robust secret sharing scheme where billions of players participate.
Keyword (in Japanese) (See Japanese page) 
(in English) Robust secret sharing / Maximal corruption / Security analysis / / / / /  
Reference Info. IEICE Tech. Rep., vol. 118, no. 151, ISEC2018-13, pp. 1-8, July 2018.
Paper # ISEC2018-13 
Date of Issue 2018-07-18 (ISEC, SITE, HWS, ICSS, EMM) 
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 ISEC2018-13 SITE2018-5 HWS2018-10 ICSS2018-16 EMM2018-12

Conference Information
Committee HWS ISEC SITE ICSS EMM IPSJ-CSEC IPSJ-SPT  
Conference Date 2018-07-25 - 2018-07-26 
Place (in Japanese) (See Japanese page) 
Place (in English) Sapporo Convention Center 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Security, etc. 
Paper Information
Registration To ISEC 
Conference Code 2018-07-HWS-ISEC-SITE-ICSS-EMM-CSEC-SPT 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Truly Efficient Robust Secret Sharing for the Real World 
Sub Title (in English)  
Keyword(1) Robust secret sharing  
Keyword(2) Maximal corruption  
Keyword(3) Security analysis  
Keyword(4)  
Keyword(5)  
Keyword(6)  
Keyword(7)  
Keyword(8)  
1st Author's Name Yohei Watanabe  
1st Author's Affiliation The University of Electro-Communications (UEC)
2nd Author's Name Kazuma Ohara  
2nd Author's Affiliation The University of Electro-Communications/NEC Corporation (UEC/NEC)
3rd Author's Name Mitsugu Iwamoto  
3rd Author's Affiliation The University of Electro-Communications (UEC)
4th Author's Name Kazuo Ohta  
4th Author's Affiliation The University of Electro-Communications (UEC)
5th Author's Name  
5th Author's Affiliation ()
6th Author's Name  
6th Author's Affiliation ()
7th Author's Name  
7th Author's Affiliation ()
8th Author's Name  
8th Author's Affiliation ()
9th Author's Name  
9th Author's Affiliation ()
10th Author's Name  
10th Author's Affiliation ()
11th Author's Name  
11th Author's Affiliation ()
12th Author's Name  
12th Author's Affiliation ()
13th Author's Name  
13th Author's Affiliation ()
14th Author's Name  
14th Author's Affiliation ()
15th Author's Name  
15th Author's Affiliation ()
16th Author's Name  
16th Author's Affiliation ()
17th Author's Name  
17th Author's Affiliation ()
18th Author's Name  
18th Author's Affiliation ()
19th Author's Name  
19th Author's Affiliation ()
20th Author's Name  
20th Author's Affiliation ()
21st Author's Name  
21st Author's Affiliation ()
22nd Author's Name  
22nd Author's Affiliation ()
23rd Author's Name  
23rd Author's Affiliation ()
24th Author's Name  
24th Author's Affiliation ()
25th Author's Name  
25th Author's Affiliation ()
26th Author's Name / /
26th Author's Affiliation ()
()
27th Author's Name / /
27th Author's Affiliation ()
()
28th Author's Name / /
28th Author's Affiliation ()
()
29th Author's Name / /
29th Author's Affiliation ()
()
30th Author's Name / /
30th Author's Affiliation ()
()
31st Author's Name / /
31st Author's Affiliation ()
()
32nd Author's Name / /
32nd Author's Affiliation ()
()
33rd Author's Name / /
33rd Author's Affiliation ()
()
34th Author's Name / /
34th Author's Affiliation ()
()
35th Author's Name / /
35th Author's Affiliation ()
()
36th Author's Name / /
36th Author's Affiliation ()
()
Speaker Author-1 
Date Time 2018-07-25 09:55:00 
Presentation Time 25 minutes 
Registration for ISEC 
Paper # ISEC2018-13, SITE2018-5, HWS2018-10, ICSS2018-16, EMM2018-12 
Volume (vol) vol.118 
Number (no) no.151(ISEC), no.152(SITE), no.153(HWS), no.154(ICSS), no.155(EMM) 
Page pp.1-8 
#Pages 8 
Date of Issue 2018-07-18 (ISEC, SITE, HWS, ICSS, EMM) 

[Return to Top Page]

[Return to IEICE Web Page]
The Institute of Electronics, Information and Communication Engineers (IEICE), Japan