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Paper Abstract and Keywords
Presentation 2014-11-18 15:00
[Poster Presentation] A Note on Attack Against Nonlinear Combiner Generator Using Sum-Product Algorithm
Kota Kubo, Shota Saito, Akira Kamatsuka, Toshiyasu Matsushima (Waseda Univ.) IBISML2014-83
Abstract (in Japanese) (See Japanese page) 
(in English) When parameters have some restrictions, we can present it on a graphical model and find the values of unknown parameters from the parameters that we know. The one method to estimate the values of unknown parameters is to apply Sum-Product Algorithm(SPA). This technique is also discussed in cryptology. In this paper, finding the value of unknown parameters in stream cipher by using SPA is discussed. Some loops exist in the graph, thus the result of SPA is not guaranteed. Therefore, we evaluate calculating posterior probabilities using SPA by changing shape of the graphical model, and by changing message passing schedule.
Keyword (in Japanese) (See Japanese page) 
(in English) factor graph / message passing schedule / nonlinear combiner generator / Sum-Product Algorithm / / / /  
Reference Info. IEICE Tech. Rep., vol. 114, no. 306, IBISML2014-83, pp. 357-364, Nov. 2014.
Paper # IBISML2014-83 
Date of Issue 2014-11-10 (IBISML) 
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 IBISML  
Conference Date 2014-11-17 - 2014-11-19 
Place (in Japanese) (See Japanese page) 
Place (in English) Nagoya Univ. 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To IBISML 
Conference Code 2014-11-IBISML 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) A Note on Attack Against Nonlinear Combiner Generator Using Sum-Product Algorithm 
Sub Title (in English)  
Keyword(1) factor graph  
Keyword(2) message passing schedule  
Keyword(3) nonlinear combiner generator  
Keyword(4) Sum-Product Algorithm  
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Keyword(6)  
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1st Author's Name Kota Kubo  
1st Author's Affiliation Waseda University (Waseda Univ.)
2nd Author's Name Shota Saito  
2nd Author's Affiliation Waseda University (Waseda Univ.)
3rd Author's Name Akira Kamatsuka  
3rd Author's Affiliation Waseda University (Waseda Univ.)
4th Author's Name Toshiyasu Matsushima  
4th Author's Affiliation Waseda University (Waseda Univ.)
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Speaker Author-1 
Date Time 2014-11-18 15:00:00 
Presentation Time 180 minutes 
Registration for IBISML 
Paper # IBISML2014-83 
Volume (vol) vol.114 
Number (no) no.306 
Page pp.357-364 
#Pages 8 
Date of Issue 2014-11-10 (IBISML) 

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