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Paper Abstract and Keywords
Presentation 2011-03-04 09:10
A Consideration of Security Risk in Compromising Hash Function -- An Exposure of Vulnerability against Information Storage System --
Kenichiro Muto, Sakae Chikara, Katsuhiko Yoshida, Shigeru Kayaguchi, Yoshiaki Seki (NTT Corp.) LOIS2010-81
Abstract (in Japanese) (See Japanese page) 
(in English) Lifelog and office information systems store processing data. Because these systems process data with these stored data, integrity of stored data is very important. A hash function that is the cryptographic algorithm is used for integrity.
On the other hand, a security of a hash function is weakening because of compromising of cryptosystems.
In this paper, we compare the computational complexity of attack against hash function MD5 and SHA-1, and consider attack feasibility and the security risk against practical system.
Keyword (in Japanese) (See Japanese page) 
(in English) Compromising of Cryptosystems / Hash Function / Security Protocols / / / / /  
Reference Info. IEICE Tech. Rep., vol. 110, no. 450, LOIS2010-81, pp. 95-100, March 2011.
Paper # LOIS2010-81 
Date of Issue 2011-02-24 (LOIS) 
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 LOIS2010-81

Conference Information
Committee LOIS  
Conference Date 2011-03-03 - 2011-03-04 
Place (in Japanese) (See Japanese page) 
Place (in English) Ishigaki IT business support center 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Practical Use of Lifelog, Office Information System, LifeInteligence, etc. 
Paper Information
Registration To LOIS 
Conference Code 2011-03-LOIS 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) A Consideration of Security Risk in Compromising Hash Function 
Sub Title (in English) An Exposure of Vulnerability against Information Storage System 
Keyword(1) Compromising of Cryptosystems  
Keyword(2) Hash Function  
Keyword(3) Security Protocols  
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1st Author's Name Kenichiro Muto  
1st Author's Affiliation NTT Information Sharing Platform Laboratories, NTT Corporation. (NTT Corp.)
2nd Author's Name Sakae Chikara  
2nd Author's Affiliation NTT Information Sharing Platform Laboratories, NTT Corporation. (NTT Corp.)
3rd Author's Name Katsuhiko Yoshida  
3rd Author's Affiliation NTT Information Sharing Platform Laboratories, NTT Corporation. (NTT Corp.)
4th Author's Name Shigeru Kayaguchi  
4th Author's Affiliation NTT Information Sharing Platform Laboratories, NTT Corporation. (NTT Corp.)
5th Author's Name Yoshiaki Seki  
5th Author's Affiliation NTT Information Sharing Platform Laboratories, NTT Corporation. (NTT Corp.)
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Speaker Author-1 
Date Time 2011-03-04 09:10:00 
Presentation Time 25 minutes 
Registration for LOIS 
Paper # LOIS2010-81 
Volume (vol) vol.110 
Number (no) no.450 
Page pp.95-100 
#Pages 6 
Date of Issue 2011-02-24 (LOIS) 

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