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Paper Abstract and Keywords
Presentation 2026-03-16 11:40
Full-Board Leakage Assessment for Efficient Electromagnetic Side-Channel Attacks -- Hotspot Visualization and Countermeasure Impact Analysis through Automated Scanning --
Ryo Murase (Nagasaki Univ) IT2025-141 ISEC2025-149 WBS2025-123 RCC2025-122
Abstract (in Japanese) (See Japanese page) 
(in English) Previous studies have visualized electromagnetic (EM) waves leaking from cryptographic implementations on circuit boards, demonstrating that the leakage distribution strongly depends on the implementation structure.
However, the focus has traditionally been on visualization itself, and frameworks connecting this to attack evaluation and countermeasure effectiveness verification have not been sufficiently organized.
This paper integrates a low-cost device suite (3D printer stage, H-field probe, ChipWhisperer)
to construct an evaluation pipeline that automatically raster scans the entire board surface to visualize EM hotspots.
Continuous captures are performed for a fixed duration at each measurement point. Online statistics estimate the average waveform and variance to calculate a pseudo SNR score,
which is saved as a score map (PNG) and numerical data (CSV).
Furthermore, based on summary information such as peak intensity and peak position (Top-$K$),
changes in the leakage distribution due to simple countermeasures (modifying power wiring connection points, shielding) are compared.
Keyword (in Japanese) (See Japanese page) 
(in English) side channel attack / electromagnetic wave attack / hot spot / visualization / automatic scanning / Countermeasure evaluation / /  
Reference Info. IEICE Tech. Rep., vol. 125, no. 405, ISEC2025-149, pp. 412-419, March 2026.
Paper # ISEC2025-149 
Date of Issue 2026-03-09 (IT, ISEC, WBS, RCC) 
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 IT2025-141 ISEC2025-149 WBS2025-123 RCC2025-122

Conference Information
Committee IT WBS ISEC RCC  
Conference Date 2026-03-16 - 2026-03-17 
Place (in Japanese) (See Japanese page) 
Place (in English) Nagano Campus, Shinshu University 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Joint Workshop of ISEC, IT, RCC, and WBS 
Paper Information
Registration To ISEC 
Conference Code 2026-03-IT-WBS-ISEC-RCC 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Full-Board Leakage Assessment for Efficient Electromagnetic Side-Channel Attacks 
Sub Title (in English) Hotspot Visualization and Countermeasure Impact Analysis through Automated Scanning 
Keyword(1) side channel attack  
Keyword(2) electromagnetic wave attack  
Keyword(3) hot spot  
Keyword(4) visualization  
Keyword(5) automatic scanning  
Keyword(6) Countermeasure evaluation  
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Keyword(8)  
1st Author's Name Ryo Murase  
1st Author's Affiliation University of Nagasaki (Nagasaki Univ)
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Speaker Author-1 
Date Time 2026-03-16 11:40:00 
Presentation Time 25 minutes 
Registration for ISEC 
Paper # IT2025-141, ISEC2025-149, WBS2025-123, RCC2025-122 
Volume (vol) vol.125 
Number (no) no.404(IT), no.405(ISEC), no.406(WBS), no.407(RCC) 
Page pp.412-419 
#Pages 8 
Date of Issue 2026-03-09 (IT, ISEC, WBS, RCC) 

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