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Paper Abstract and Keywords
Presentation 2022-03-08 15:30
Secure Computation Using Secret Sharing Scheme that can be Configured on a Single Server and is Safe from Malicious Adversaries and Cheaters in the TTP
Keiichi Iwamura, Ryoya Kudo (TUS), Masaki Inamura (Hiroshima City Univ.) ICSS2021-81
Abstract (in Japanese) (See Japanese page) 
(in English) A secret sharing scheme that can be executed on a single server using TTP has been proposed. In this method, the entire computation process on the server can be made public if random numbers corresponding to the key can be managed securely, and since it can be executed on a single server, no communication occurs and very fast secret computation can be realized. However, this method is designed for semi-honest adversaries and not for malicious adversaries. In addition, although TTPs are generally assumed to be trustworthy, if there is a malicious adversary in the TTP and he can learn the computation process in the server, the secret information and the computation results will be leaked. In this paper, we propose a secure computation using secret sharing scheme, that can be configured on a single server and is safe from malicious adversaries and cheaters in the TTP. In order to achieve this, we combine TTP and TEE, but we assume that the server discloses the entire computation process, which means that the server and the programs installed in the TEE are public and can be verified by anyone. Thus, if the server and its TEEs are legitimate, this can protect confidential information from unauthorized persons in the TTP. As a result, a single server can realize secure secret computation against malicious adversaries and cheaters in the TTP, and also maintain high-speed processing.
Keyword (in Japanese) (See Japanese page) 
(in English) TTP / Secure Computation / Secret Sharing Scheme / MPC / malicious / Single Server / High-speed Processing /  
Reference Info. IEICE Tech. Rep., vol. 121, no. 410, ICSS2021-81, pp. 135-140, March 2022.
Paper # ICSS2021-81 
Date of Issue 2022-02-28 (ICSS) 
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)
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Conference Information
Committee ICSS IPSJ-SPT  
Conference Date 2022-03-07 - 2022-03-08 
Place (in Japanese) (See Japanese page) 
Place (in English) Online 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Security, Trust, etc. 
Paper Information
Registration To ICSS 
Conference Code 2022-03-ICSS-SPT 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Secure Computation Using Secret Sharing Scheme that can be Configured on a Single Server and is Safe from Malicious Adversaries and Cheaters in the TTP 
Sub Title (in English)  
Keyword(1) TTP  
Keyword(2) Secure Computation  
Keyword(3) Secret Sharing Scheme  
Keyword(4) MPC  
Keyword(5) malicious  
Keyword(6) Single Server  
Keyword(7) High-speed Processing  
Keyword(8)  
1st Author's Name Keiichi Iwamura  
1st Author's Affiliation Tokyo University of Science (TUS)
2nd Author's Name Ryoya Kudo  
2nd Author's Affiliation Tokyo University of Science (TUS)
3rd Author's Name Masaki Inamura  
3rd Author's Affiliation Hiroshima City University (Hiroshima City Univ.)
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Speaker Author-2 
Date Time 2022-03-08 15:30:00 
Presentation Time 20 minutes 
Registration for ICSS 
Paper # ICSS2021-81 
Volume (vol) vol.121 
Number (no) no.410 
Page pp.135-140 
#Pages
Date of Issue 2022-02-28 (ICSS) 


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