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Paper Abstract and Keywords
Presentation 2007-07-20 10:45
A Study on the Tews-Weinmann-Pyshkin Attack against WEP
Yuko Ozasa, Yoshiaki Fujikawa, Toshihiro Ohigashi, Hidenori Kuwakado, Masakatu Morii (Kobe Univ.) ISEC2007-47
Abstract (in Japanese) (See Japanese page) 
(in English) Tews, Weinmann, and Phshkin have shown a key recovery attack against WEP (the TWP attack), which is the modification of Klein's key recovery attack against RC4. The TWP attack allows an attacker to recover a 104-bit secret key from 40,000 captured packets with probability 0.5 and from 85,000 captured packets with probability 0.95. In this paper, we improve the probability of recovering the key when the number of captured packets is less，efficiently. For example, if 10,000 packets are captured, then the probability of recovering it is three times as large as than that of the TWP attack. If 20,000 packets are done, then it is twice as large as than that of the TWP attack. Our attack can find the secret key in a few seconds.
Keyword (in Japanese) (See Japanese page) 
(in English) WEP / key recovery attack / RC4 / / / / /  
Reference Info. IEICE Tech. Rep., vol. 107, no. 141, ISEC2007-47, pp. 17-21, July 2007.
Paper # ISEC2007-47 
Date of Issue 2007-07-13 (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 SITE IPSJ-CSEC  
Conference Date 2007-07-19 - 2007-07-20 
Place (in Japanese) (See Japanese page) 
Place (in English) Future University-Hakodate 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To ISEC 
Conference Code 2007-07-ISEC-SITE-IPSJ-CSEC 
Language English (Japanese title is available) 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) A Study on the Tews-Weinmann-Pyshkin Attack against WEP 
Sub Title (in English)  
Keyword(1) WEP  
Keyword(2) key recovery attack  
Keyword(3) RC4  
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1st Author's Name Yuko Ozasa  
1st Author's Affiliation Kobe University (Kobe Univ.)
2nd Author's Name Yoshiaki Fujikawa  
2nd Author's Affiliation Kobe University (Kobe Univ.)
3rd Author's Name Toshihiro Ohigashi  
3rd Author's Affiliation Kobe University (Kobe Univ.)
4th Author's Name Hidenori Kuwakado  
4th Author's Affiliation Kobe University (Kobe Univ.)
5th Author's Name Masakatu Morii  
5th Author's Affiliation Kobe University (Kobe Univ.)
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Speaker Author-1 
Date Time 2007-07-20 10:45:00 
Presentation Time 25 minutes 
Registration for ISEC 
Paper # ISEC2007-47 
Volume (vol) vol.107 
Number (no) no.141 
Page pp.17-21 
#Pages 5 
Date of Issue 2007-07-13 (ISEC) 

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