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Paper Abstract and Keywords
Presentation 2024-02-29 16:20
[Memorial Lecture] Logic Locking over TFHE for Securing User Data and Algorithms
Kohei Suemitsu, Kotaro Matsuoka, Takashi Sato, Masanori Hashimoto (Kyoto Univ.) VLD2023-118 HWS2023-78 ICD2023-107
Abstract (in Japanese) (See Japanese page) 
(in English) This paper proposes the application of logic locking over TFHE to protect both user data and algorithms, such as input user data and models in machine learning inference applications. With the proposed secure computation protocol, algorithm evaluation can be performed distributively on honest-but-curious user computers while keeping the algorithm secure. To achieve this, we combine conventional logic locking for untrusted foundries with TFHE to enable secure computation. By encrypting the logic locking key using TFHE, the key is secured with the degree of TFHE. We implemented the proposed secure protocols for combinational logic neural networks and decision trees using LUT-based obfuscation. Regarding the security analysis, we subjected them to the SAT attack and evaluated their resistance based on the execution time. We successfully configured the proposed secure protocol to be resistant to the SAT attack in all machine learning benchmarks. Also, the experimental result shows that the proposed secure computation involved almost no TFHE runtime overhead in a test case with thousands of gates.
Keyword (in Japanese) (See Japanese page) 
(in English) secure computation / logic locking / LUT-based obfuscation / TFHE / / / /  
Reference Info. IEICE Tech. Rep., vol. 123, no. 390, VLD2023-118, pp. 100-100, Feb. 2024.
Paper # VLD2023-118 
Date of Issue 2024-02-21 (VLD, HWS, ICD) 
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 VLD2023-118 HWS2023-78 ICD2023-107

Conference Information
Committee VLD HWS ICD  
Conference Date 2024-02-28 - 2024-03-02 
Place (in Japanese) (See Japanese page) 
Place (in English)  
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To VLD 
Conference Code 2024-02-VLD-HWS-ICD 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Logic Locking over TFHE for Securing User Data and Algorithms 
Sub Title (in English)  
Keyword(1) secure computation  
Keyword(2) logic locking  
Keyword(3) LUT-based obfuscation  
Keyword(4) TFHE  
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1st Author's Name Kohei Suemitsu  
1st Author's Affiliation Kyoto University (Kyoto Univ.)
2nd Author's Name Kotaro Matsuoka  
2nd Author's Affiliation Kyoto University (Kyoto Univ.)
3rd Author's Name Takashi Sato  
3rd Author's Affiliation Kyoto University (Kyoto Univ.)
4th Author's Name Masanori Hashimoto  
4th Author's Affiliation Kyoto University (Kyoto Univ.)
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Speaker Author-1 
Date Time 2024-02-29 16:20:00 
Presentation Time 25 minutes 
Registration for VLD 
Paper # VLD2023-118, HWS2023-78, ICD2023-107 
Volume (vol) vol.123 
Number (no) no.390(VLD), no.391(HWS), no.392(ICD) 
Page p.100 
#Pages 1 
Date of Issue 2024-02-21 (VLD, HWS, ICD) 

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