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Paper Abstract and Keywords
Presentation 2009-12-16 13:25
Beyond the Shannon limit by quantum stream cipher Y-00 and Holevo-Sohma-Hirota theorem -- General proof --
Osamu Hirota (Tamagawa Univ.) ISEC2009-72
Abstract (in Japanese) (See Japanese page) 
(in English) One of important problems in cryptography is to prove the existence of a cipher which can break the Shannon limit.
Yuen 2000 protocol so called Y-00 is an example of the ciphers which get out of the Shannon frame. Y-00 consists of Gauss private randomization and quantum measurement theory. There are two models to realize Y-00 scheme. One is that the legitimate user employs the quantum optimum receiver, and other is that he employs the conventional optical receiver. In the former case, the Shannon limit is broken by the basic protocol of Y-00, but in the latter case, one needs to employ
another randomization. However, in any case, Y-00 can break the Shannon limit by making the difference of the signal detection ability between the legitimate user and attackers using the running key sequence from LFSR. In this paper, we give a general proof of the exsitence of beyond Shannon limit by a method of the quantum Shannon channel coding theorem.
Keyword (in Japanese) (See Japanese page) 
(in English) Optical communication quantum cipher / Y-00 / Quantum stream cipher / coding theorem / / / /  
Reference Info. IEICE Tech. Rep., vol. 109, no. 337, ISEC2009-72, pp. 7-14, Dec. 2009.
Paper # ISEC2009-72 
Date of Issue 2009-12-09 (ISEC) 
ISSN Print edition: ISSN 0913-5685    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)
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Conference Information
Committee ISEC  
Conference Date 2009-12-16 - 2009-12-16 
Place (in Japanese) (See Japanese page) 
Place (in English) Kikai-Shinko-Kaikan Bldg. 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To ISEC 
Conference Code 2009-12-ISEC 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Beyond the Shannon limit by quantum stream cipher Y-00 and Holevo-Sohma-Hirota theorem 
Sub Title (in English) General proof 
Keyword(1) Optical communication quantum cipher  
Keyword(2) Y-00  
Keyword(3) Quantum stream cipher  
Keyword(4) coding theorem  
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1st Author's Name Osamu Hirota  
1st Author's Affiliation Tamagawa University (Tamagawa Univ.)
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Speaker Author-1 
Date Time 2009-12-16 13:25:00 
Presentation Time 25 minutes 
Registration for ISEC 
Paper # ISEC2009-72 
Volume (vol) vol.109 
Number (no) no.337 
Page pp.7-14 
#Pages 8 
Date of Issue 2009-12-09 (ISEC) 

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