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Paper Abstract and Keywords
Presentation 2015-09-04 10:55
Improvement of RainbowCrack Reduction Function
Yuki Tabata, Keisuke Iwai, Hidema Tanaka, Takakazu Kurokawa (NDA) ISEC2015-26
Abstract (in Japanese) (See Japanese page) 
(in English) Rainbow table is a method to crack the password in high speed from hash values. Rainbow table can crack passwords only if they are stored in a pre-calculated table. However, overlap of password candidates occurs frequently when the table size is big enough, since the table is made by reduction function. To solve this problem, this paper proposes improvement of reduction function, which is used in RainbowCrack, a representative password cracking software which implements rainbow table. As a result, Overlapping password candidates can be decreased, and cracking time was improved 53.9% compared with RainbowCrack.
Keyword (in Japanese) (See Japanese page) 
(in English) Rainbow Table / Reduction Function / RainbowCrack / Password Crack / Hash Function / / /  
Reference Info. IEICE Tech. Rep., vol. 115, no. 215, ISEC2015-26, pp. 9-14, Sept. 2015.
Paper # ISEC2015-26 
Date of Issue 2015-08-28 (ISEC) 
ISSN Print edition: ISSN 0913-5685  Online edition: ISSN 2432-6380
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 ISEC2015-26

Conference Information
Committee ISEC  
Conference Date 2015-09-04 - 2015-09-04 
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 2015-09-ISEC 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Improvement of RainbowCrack Reduction Function 
Sub Title (in English)  
Keyword(1) Rainbow Table  
Keyword(2) Reduction Function  
Keyword(3) RainbowCrack  
Keyword(4) Password Crack  
Keyword(5) Hash Function  
1st Author's Name Yuki Tabata  
1st Author's Affiliation National Defence Academy (NDA)
2nd Author's Name Keisuke Iwai  
2nd Author's Affiliation National Defence Academy (NDA)
3rd Author's Name Hidema Tanaka  
3rd Author's Affiliation National Defence Academy (NDA)
4th Author's Name Takakazu Kurokawa  
4th Author's Affiliation National Defence Academy (NDA)
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Date Time 2015-09-04 10:55:00 
Presentation Time 25 
Registration for ISEC 
Paper # IEICE-ISEC2015-26 
Volume (vol) IEICE-115 
Number (no) no.215 
Page pp.9-14 
#Pages IEICE-6 
Date of Issue IEICE-ISEC-2015-08-28 

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