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Paper Abstract and Keywords
Presentation 2026-07-31 10:00
A Proposal for a Method to Detect Spoofed Response Packets Using Mining Difficulty in the Decentralized Naming Service Handshake
Junichi Yoshida, Soramichi Akiyama (Ritsumeikan Univ.) NS2026-56
Abstract (in Japanese) (See Japanese page) 
(in English) Handshake is a blockchain-based name resolution system aimed at decentralized management of TLDs. When this system is used alongside conventional DNS in a traditional name resolution network, cache poisoning attacks become possible because the same communication protocol as conventional name resolution is used. Existing defense methods against this attack rely on a centralized trust anchor, but applying them to Handshake is not appropriate due to the decentralized nature of blockchain. Therefore, this study proposes a defense method against cache poisoning attacks that uses blockchain's Difficulty as a computational trust anchor. We evaluated the proposed method against three attack scenarios and confirmed that the attack could be prevented in all scenarios.
Keyword (in Japanese) (See Japanese page) 
(in English) BlockChain / Difficulty / Handshake / Cache poisoning attack / / / /  
Reference Info. IEICE Tech. Rep., vol. 126, no. 132, NS2026-56, pp. 47-52, July 2026.
Paper # NS2026-56 
Date of Issue 2026-07-23 (NS) 
ISSN 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 NS2026-56

Conference Information
Committee NS SeMI RISING  
Conference Date 2026-07-30 - 2026-07-31 
Place (in Japanese) (See Japanese page) 
Place (in English) NTT WEST PRISM + Online 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To NS 
Conference Code 2026-07-NS-SeMI-RISING 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) A Proposal for a Method to Detect Spoofed Response Packets Using Mining Difficulty in the Decentralized Naming Service Handshake 
Sub Title (in English)  
Keyword(1) BlockChain  
Keyword(2) Difficulty  
Keyword(3) Handshake  
Keyword(4) Cache poisoning attack  
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Keyword(6)  
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1st Author's Name Junichi Yoshida  
1st Author's Affiliation Ritsumeikan University (Ritsumeikan Univ.)
2nd Author's Name Soramichi Akiyama  
2nd Author's Affiliation Ritsumeikan University (Ritsumeikan Univ.)
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Speaker Author-1 
Date Time 2026-07-31 10:00:00 
Presentation Time 25 minutes 
Registration for NS 
Paper # NS2026-56 
Volume (vol) vol.126 
Number (no) no.132 
Page pp.47-52 
#Pages 6 
Date of Issue 2026-07-23 (NS) 

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