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Paper Abstract and Keywords
Presentation 2026-03-17 13:30
Design of an Efficient AES-Based Authenticated Encryption with Associated Data
Taichi Nagoya (UoH), Takuro Shiraya, Tatsuya Ishikawa (UOsaka), Kosei Sakamoto (MELCO/UOsaka), Ito Ryoma (NICT/UOsaka), Subhadeep Banik (USI), Takanori Isobe (UOsaka/NICT) IT2025-136 ISEC2025-144 WBS2025-118 RCC2025-117
Abstract (in Japanese) (See Japanese page) 
(in English) This study designs an Authenticated Encryption with Associated Data (AEAD) based on the AES-based AEAD Rocca-S.
Specifically, it aims to increase the amount of data that can be processed and improve processing speed by extending the input data length to the round function by 1.5 times while improving the ciphertext output function.
Therefore, speed experiments clarify the timing and number of times additional cryptographic operations such as XOR and AES can be performed, determining the design policy for round functions that can be executed efficiently.
Next, we evaluate the resistance to forgery attacks at the byte level for candidate improvements based on this design principle to narrow down the options.
Generally, forgery attacks are not inherently accelerated even when using quantum computers. Therefore, from a practical standpoint, this study sets the security benchmark for candidate selection at 128-bit security.
Subsequently, we narrow down the candidates through speed evaluations on Intel, AMD, and ARM CPUs to determine candidates that are both secure and fast.
As a result, we propose a scheme that guarantees 128-bit security,
achieves a 1.31x speedup in ARM software implementations, and further reduces power consumption by 25.40% in hardware implementations.
Keyword (in Japanese) (See Japanese page) 
(in English) SAT solver / differential cryptanalysis / / / / / /  
Reference Info. IEICE Tech. Rep., vol. 125, no. 405, ISEC2025-144, pp. 376-383, March 2026.
Paper # ISEC2025-144 
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 IT2025-136 ISEC2025-144 WBS2025-118 RCC2025-117

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) Design of an Efficient AES-Based Authenticated Encryption with Associated Data 
Sub Title (in English)  
Keyword(1) SAT solver  
Keyword(2) differential cryptanalysis  
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1st Author's Name Taichi Nagoya  
1st Author's Affiliation University of Hyogo (UoH)
2nd Author's Name Takuro Shiraya  
2nd Author's Affiliation The University of Osaka (UOsaka)
3rd Author's Name Tatsuya Ishikawa  
3rd Author's Affiliation The University of Osaka (UOsaka)
4th Author's Name Kosei Sakamoto  
4th Author's Affiliation Mitsubishi Elecrtric Corporation/The University of Osaka (MELCO/UOsaka)
5th Author's Name Ito Ryoma  
5th Author's Affiliation National Institute of Information and Communications Technology/The University of Osaka (NICT/UOsaka)
6th Author's Name Subhadeep Banik  
6th Author's Affiliation University of Lugano (USI)
7th Author's Name Takanori Isobe  
7th Author's Affiliation The University of Osaka/National Institute of Information and Communications Technology (UOsaka/NICT)
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Speaker Author-1 
Date Time 2026-03-17 13:30:00 
Presentation Time 25 minutes 
Registration for ISEC 
Paper # IT2025-136, ISEC2025-144, WBS2025-118, RCC2025-117 
Volume (vol) vol.125 
Number (no) no.404(IT), no.405(ISEC), no.406(WBS), no.407(RCC) 
Page pp.376-383 
#Pages 8 
Date of Issue 2026-03-09 (IT, ISEC, WBS, RCC) 

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