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Paper Abstract and Keywords
Presentation 2007-10-26 11:00
A Private Storage System Using Self-Encryption Scheme over P2P Distributed File Sharing Infrastructure
Hiroki Endo, Yoshihiro Kawahara, Tohru Asami (The Univ. of Tokyo) IA2007-38
Abstract (in Japanese) (See Japanese page) 
(in English) We have proposed a distributed storage system based on self encryption scheme for the purpose of protecting private information stored in mobile handsets. In a ubiquitous computing environment where people use public computers installed everywhere, mobile handsets, which users always carry, are expected to act as secure file storages to carry private information. However, if the mobile handsets are combined with PCs, the limited computation capability of a mobile handset can slow down the performance of the PCs. In this paper, we review the role of the mobile handsets and the network storage to relax the load of mobile handsets as well as to balance the utility and security of the system. When we allow network servers to split a plain text file into s cipher text files using self encryption scheme, a malicious intruder of the network storage server can decrypt the original text with only cCs trials. To avoid this problem, we share a network DHT based storage infrastructure with other m users. With this modification, the intruder needs (m*n)Cs trials to decrypt a single file, which is quite hard when m is large enough.
Keyword (in Japanese) (See Japanese page) 
(in English) Distributed Storage / Mobile Handsets / P2P / Self-Encryption / / / /  
Reference Info. IEICE Tech. Rep., vol. 107, no. 280, IA2007-38, pp. 45-50, Oct. 2007.
Paper # IA2007-38 
Date of Issue 2007-10-18 (IA) 
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 IA  
Conference Date 2007-10-25 - 2007-10-26 
Place (in Japanese) (See Japanese page) 
Place (in English) Fukuoka SRP Center Building 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Quality Aware Internet,etc 
Paper Information
Registration To IA 
Conference Code 2007-10-IA 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) A Private Storage System Using Self-Encryption Scheme over P2P Distributed File Sharing Infrastructure 
Sub Title (in English)  
Keyword(1) Distributed Storage  
Keyword(2) Mobile Handsets  
Keyword(3) P2P  
Keyword(4) Self-Encryption  
Keyword(5)  
Keyword(6)  
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Keyword(8)  
1st Author's Name Hiroki Endo  
1st Author's Affiliation The University of Tokyo (The Univ. of Tokyo)
2nd Author's Name Yoshihiro Kawahara  
2nd Author's Affiliation The University of Tokyo (The Univ. of Tokyo)
3rd Author's Name Tohru Asami  
3rd Author's Affiliation The University of Tokyo (The Univ. of Tokyo)
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Speaker Author-1 
Date Time 2007-10-26 11:00:00 
Presentation Time 30 minutes 
Registration for IA 
Paper # IA2007-38 
Volume (vol) vol.107 
Number (no) no.280 
Page pp.45-50 
#Pages 6 
Date of Issue 2007-10-18 (IA) 

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