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Paper Abstract and Keywords
Presentation 2016-03-04 13:30
A New Key Correlation in the Stream Cipher RC4
Daiki Michihiro (JAIST), Atsuko Miyaji (Osaka Univ./JAIST/CREST) ICSS2015-65
Abstract (in Japanese) (See Japanese page) 
(in English) The stream cipher RC4 has been analyzed by using various schemes since the algorithm was leaked
in 1994.In particular, for key recovery attack assuming known keystream there are two important key-correlation
equations found by Vaudenay et al. in 2007 and Maitra et al. in 2008. In this paper, we present third correla-
tion between keystream and secret key. This correlation hold with approximately 1.045/N at most and continue
until 140th keystream byte . Furthermore, this equation includes keylength-dependent biases found by Isobe et
al. in 2013. It is weaker than two existing correlations, we show and consider the new correlation which had been
overlooked more than twenty years.
Keyword (in Japanese) (See Japanese page) 
(in English) RC4 / Key correlation / Linear correlation / Key recovery attack / Cryptanalysis / Stream cipher / /  
Reference Info. IEICE Tech. Rep., vol. 115, no. 488, ICSS2015-65, pp. 111-116, March 2016.
Paper # ICSS2015-65 
Date of Issue 2016-02-25 (ICSS) 
ISSN Print edition: ISSN 0913-5685    Online edition: ISSN 2432-6380
Copyright
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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 ICSS IPSJ-SPT  
Conference Date 2016-03-03 - 2016-03-04 
Place (in Japanese) (See Japanese page) 
Place (in English) Academic Center for Computing and Media Studies, Kyoto University 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Information and Communication System Security, etc. 
Paper Information
Registration To ICSS 
Conference Code 2016-03-ICSS-SPT 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) A New Key Correlation in the Stream Cipher RC4 
Sub Title (in English)  
Keyword(1) RC4  
Keyword(2) Key correlation  
Keyword(3) Linear correlation  
Keyword(4) Key recovery attack  
Keyword(5) Cryptanalysis  
Keyword(6) Stream cipher  
Keyword(7)  
Keyword(8)  
1st Author's Name Daiki Michihiro  
1st Author's Affiliation Japan Advanced Institute of Science and Technology (JAIST)
2nd Author's Name Atsuko Miyaji  
2nd Author's Affiliation Osaka University/Japan Advanced Institute of Science and Technology/JST CREST (Osaka Univ./JAIST/CREST)
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Speaker Author-1 
Date Time 2016-03-04 13:30:00 
Presentation Time 30 minutes 
Registration for ICSS 
Paper # ICSS2015-65 
Volume (vol) vol.115 
Number (no) no.488 
Page pp.111-116 
#Pages
Date of Issue 2016-02-25 (ICSS) 


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