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Paper Abstract and Keywords
Presentation 2023-03-15 13:25
Generalized Unicity Distance and its Application to Y-00 Quantum Stream Cipher
Masaki Sohma (Tamagawa Univ.), Osamu Hirota (Chuo Univ.) IT2022-128 ISEC2022-107 WBS2022-125 RCC2022-125
Abstract (in Japanese) (See Japanese page) 
(in English) Shannon proposed a theory to evaluate cryptographic functions based on the entropy theory he had developed in order to analyze whether cryptography can be cracked in principle. On the other hand Shannon offers two important warnings. One is that entropy does not cover all the information handled by humans in discussing unbreakability, one should carefully consider its limitations. The other is to carefully argue that a principle always has ancillary conditions.
In this paper, we first analyze in detail the assumptions on which Shannon's theory is based and systematically explain the notion of security it provides. Next, an attempt to extend Shannon theory to the case of cryptographic mechanisms for which Shannon's preconditions do not hold is presented.
Keyword (in Japanese) (See Japanese page) 
(in English) Shannon random cipher / Generalized random cipher / Infoumation theoretic security / Ciphertext hiding cipher / / / /  
Reference Info. IEICE Tech. Rep., vol. 122, no. 428, ISEC2022-107, pp. 378-385, March 2023.
Paper # ISEC2022-107 
Date of Issue 2023-03-07 (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 IT2022-128 ISEC2022-107 WBS2022-125 RCC2022-125

Conference Information
Committee RCC ISEC IT WBS  
Conference Date 2023-03-14 - 2023-03-15 
Place (in Japanese) (See Japanese page) 
Place (in English)  
Topics (in Japanese) (See Japanese page) 
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Paper Information
Registration To ISEC 
Conference Code 2023-03-RCC-ISEC-IT-WBS 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Generalized Unicity Distance and its Application to Y-00 Quantum Stream Cipher 
Sub Title (in English)  
Keyword(1) Shannon random cipher  
Keyword(2) Generalized random cipher  
Keyword(3) Infoumation theoretic security  
Keyword(4) Ciphertext hiding cipher  
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1st Author's Name Masaki Sohma  
1st Author's Affiliation Tamagawa University (Tamagawa Univ.)
2nd Author's Name Osamu Hirota  
2nd Author's Affiliation Chuo University (Chuo Univ.)
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Speaker Author-2 
Date Time 2023-03-15 13:25:00 
Presentation Time 25 minutes 
Registration for ISEC 
Paper # IT2022-128, ISEC2022-107, WBS2022-125, RCC2022-125 
Volume (vol) vol.122 
Number (no) no.427(IT), no.428(ISEC), no.429(WBS), no.430(RCC) 
Page pp.378-385 
#Pages 8 
Date of Issue 2023-03-07 (IT, ISEC, WBS, RCC) 

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