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Paper Abstract and Keywords
Presentation 2007-11-22 16:10
New Weak Keys on RC4
Ryoichi Teramura, Toshihiro Ohigashi, Hidenori Kuwakado, Masakatu Morii (Kobe Univ.) ISEC2007-111 OIS2007-83
Abstract (in Japanese) (See Japanese page) 
(in English) This paper discusses the keys on RC4 which parts of them can be recovered from
their outputs with high probability.
We show parts of initial states can be recovered from their outputs
with high probability than the probability that parts of internal state are
recovered,
and specified RC4 keys generate that kind of initial states with high probability.
Exploiting those keys, cryptanalysts can reduce RC4 key space than exploiting Roos's weak key.
Keyword (in Japanese) (See Japanese page) 
(in English) RC4 / weak key / predictive state / / / / /  
Reference Info. IEICE Tech. Rep., vol. 107, no. 346, ISEC2007-111, pp. 75-80, Nov. 2007.
Paper # ISEC2007-111 
Date of Issue 2007-11-15 (ISEC, OIS) 
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)
Download PDF ISEC2007-111 OIS2007-83

Conference Information
Committee ISEC LOIS  
Conference Date 2007-11-21 - 2007-11-22 
Place (in Japanese) (See Japanese page) 
Place (in English) Kobe University 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To ISEC 
Conference Code 2007-11-ISEC-OIS 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) New Weak Keys on RC4 
Sub Title (in English)  
Keyword(1) RC4  
Keyword(2) weak key  
Keyword(3) predictive state  
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1st Author's Name Ryoichi Teramura  
1st Author's Affiliation Kobe University (Kobe Univ.)
2nd Author's Name Toshihiro Ohigashi  
2nd Author's Affiliation Kobe University (Kobe Univ.)
3rd Author's Name Hidenori Kuwakado  
3rd Author's Affiliation Kobe University (Kobe Univ.)
4th Author's Name Masakatu Morii  
4th Author's Affiliation Kobe University (Kobe Univ.)
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Speaker Author-1 
Date Time 2007-11-22 16:10:00 
Presentation Time 25 minutes 
Registration for ISEC 
Paper # ISEC2007-111, OIS2007-83 
Volume (vol) vol.107 
Number (no) no.346(ISEC), no.348(OIS) 
Page pp.75-80 
#Pages 6 
Date of Issue 2007-11-15 (ISEC, OIS) 

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