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 2026-07-14 11:30
Access Control for Latent Diffusion Models Using the Covariance Matrix of Noise Distribution as Secret Keys
Temma Tanaka, Kazuaki Nakamura (Tokyo Univ. of Science) ISEC2026-34 SITE2026-30 BioX2026-57 HWS2026-30 ICSS2026-49 EMM2026-41
Abstract (in Japanese) (See Japanese page) 
(in English) To defend against the misuse of image generation AI, this paper proposes an access control method for latent diffusion models (LDMs) that allows only authorized users with a secret key to generate high-quality images. LDMs cannot generate high-quality images unless the same initial noise distribution is used during both training and generation phases. Based on this characteristic, the proposed method formulates the noise distribution as a Gaussian with a non-diagonal covariance matrix and uses it as a secret key. Specifically, we design the obfuscated covariance matrix by applying an orthogonal transformation to a masked diagonal matrix, where the mask and the transformation matrix are used as secret keys. Our experiments on a face image dataset show that our method sufficiently suppresses the quality of generated images even when 95% of the secret key information is leaked, demonstrating its effectiveness and robustness.
Keyword (in Japanese) (See Japanese page) 
(in English) latent diffusion models / access control / initial noise distribution / non-diagonal covariance matrix / / / /  
Reference Info. IEICE Tech. Rep., vol. 126, no. 112, EMM2026-41, pp. 146-151, July 2026.
Paper # EMM2026-41 
Date of Issue 2026-07-06 (ISEC, SITE, BioX, HWS, ICSS, EMM) 
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 ISEC2026-34 SITE2026-30 BioX2026-57 HWS2026-30 ICSS2026-49 EMM2026-41

Conference Information
Committee BioX HWS ISEC SITE ICSS EMM IPSJ-CSEC IPSJ-SPT 
Conference Date 2026-07-13 - 2026-07-15 
Place (in Japanese) (See Japanese page) 
Place (in English) Sapporo Convention Center 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To EMM 
Conference Code 2026-07-BioX-HWS-ISEC-SITE-ICSS-EMM-CSEC-SPT-SEC 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Access Control for Latent Diffusion Models Using the Covariance Matrix of Noise Distribution as Secret Keys 
Sub Title (in English)  
Keyword(1) latent diffusion models  
Keyword(2) access control  
Keyword(3) initial noise distribution  
Keyword(4) non-diagonal covariance matrix  
Keyword(5)  
Keyword(6)  
Keyword(7)  
Keyword(8)  
1st Author's Name Temma Tanaka  
1st Author's Affiliation Tokyo University of Science (Tokyo Univ. of Science)
2nd Author's Name Kazuaki Nakamura  
2nd Author's Affiliation Tokyo University of Science (Tokyo Univ. of Science)
3rd Author's Name  
3rd Author's Affiliation ()
4th Author's Name  
4th Author's Affiliation ()
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 2026-07-14 11:30:00 
Presentation Time 25 minutes 
Registration for EMM 
Paper # ISEC2026-34, SITE2026-30, BioX2026-57, HWS2026-30, ICSS2026-49, EMM2026-41 
Volume (vol) vol.126 
Number (no) no.107(ISEC), no.108(SITE), no.109(BioX), no.110(HWS), no.111(ICSS), no.112(EMM) 
Page pp.146-151 
#Pages 6 
Date of Issue 2026-07-06 (ISEC, SITE, BioX, HWS, ICSS, EMM) 

[Return to Top Page]

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