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Paper Abstract and Keywords
Presentation 2010-07-02 13:50
An Efficient Broadcast Encryption with Personalized Messages
Go Ohtake (NHK), Goichiro Hanaoka (AIST), Kazuto Ogawa (NHK) ISEC2010-31 SITE2010-27 ICSS2010-37
Abstract (in Japanese) (See Japanese page) 
(in English) In broadcasting services, a broadcaster may transmit not only a roadcast content but also a personalized message for each user, both of which are encrypted. Current broadcasting services employ some symmetric key encryption schemes. For the personalized message encryption, all of the user’s secret key must be managed securely. On the other hand, several broadcast encryption schemes using a public key have been proposed. A broadcaster encrypts a message for some subset S of users with a public key and any user in S can decrypt the broadcast with his/her private key. However, it is difficult to encrypt a personalized message and transmit it to each user efficiently. In this paper, we propose a broadcast encryption scheme which has a personalized message encryption function. We show that our scheme is efficient in terms of ciphertext size.
Keyword (in Japanese) (See Japanese page) 
(in English) digital broadcasting / copyright protection / Conditional Access System (CAS) / broadcast encryption / / / /  
Reference Info. IEICE Tech. Rep., vol. 110, no. 113, ISEC2010-31, pp. 159-166, July 2010.
Paper # ISEC2010-31 
Date of Issue 2010-06-24 (ISEC, SITE, ICSS) 
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 ISEC2010-31 SITE2010-27 ICSS2010-37

Conference Information
Committee ISEC IPSJ-CSEC SITE ICSS  
Conference Date 2010-07-01 - 2010-07-02 
Place (in Japanese) (See Japanese page) 
Place (in English) Hirosaki University 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To ISEC 
Conference Code 2010-07-ISEC-CSEC-SITE-ICSS 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) An Efficient Broadcast Encryption with Personalized Messages 
Sub Title (in English)  
Keyword(1) digital broadcasting  
Keyword(2) copyright protection  
Keyword(3) Conditional Access System (CAS)  
Keyword(4) broadcast encryption  
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1st Author's Name Go Ohtake  
1st Author's Affiliation Japan Broadcasting Corporation (NHK)
2nd Author's Name Goichiro Hanaoka  
2nd Author's Affiliation National Institute of Advanced Industrial Science and Technology (AIST)
3rd Author's Name Kazuto Ogawa  
3rd Author's Affiliation Japan Broadcasting Corporation (NHK)
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Speaker Author-1 
Date Time 2010-07-02 13:50:00 
Presentation Time 25 minutes 
Registration for ISEC 
Paper # ISEC2010-31, SITE2010-27, ICSS2010-37 
Volume (vol) vol.110 
Number (no) no.113(ISEC), no.114(SITE), no.115(ICSS) 
Page pp.159-166 
#Pages 8 
Date of Issue 2010-06-24 (ISEC, SITE, ICSS) 

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