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| Presentation | 2010-03-05 13:50 Traitor Tracing system with Constant-size Public-key and Ciphertext using q-ary fingerprinting codes Ying Zhang (Chuo Univ.), Takashi Kitagawa (Univ. of Tokyo.), Nuttapong Attrapadung (AIST), Hideki Imai (Chuo Univ/AIST)  IT2009-110 ISEC2009-118 WBS2009-89 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | A traitor tracing system enables a publisher to trace a pirate decryption box to one of the secret keys used to create the box. In 2008, Boneh and Naor proposed a traitor tracing system where ciphertext size is constant,namely independent of the number of users in the system and the collusion bound. Their system uses a collusion secure fingerprint code and the size of the public key and the secret key depends on the length of the code. Due to the long code length of fingerprint codes, the sizes of the public and secret keys become very large. In 2009,Douman et al. improved the traitor tracing system to have constant size public key by using an ID-based encryption scheme.However, the size of secret key still depends on the length of a fingerprint code. In this paper, we extend their methods using q-ary fingerprint codes. The size of public key and ciphertext are constant. The size of the secret key reduced to 20% when q = 10. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | traitor-tracing / q-ary fingerprinting code / ID-Based Encryption / / / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 109, no. 445, ISEC2009-118, pp. 255-260, March 2010. | |
| Paper # | ISEC2009-118 | |
| Date of Issue | 2010-02-25 (IT, ISEC, WBS) | |
| 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 | IT2009-110 ISEC2009-118 WBS2009-89 |
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| Conference Information | |
| Committee | IT ISEC WBS |
| Conference Date | 2010-03-04 - 2010-03-05 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Nagano-Engineering Campus, Shinshu University |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Paper Information | |
| Registration To | ISEC |
| Conference Code | 2010-03-IT-ISEC-WBS |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Traitor Tracing system with Constant-size Public-key and Ciphertext using q-ary fingerprinting codes |
| Sub Title (in English) | |
| Keyword(1) | traitor-tracing |
| Keyword(2) | q-ary fingerprinting code |
| Keyword(3) | ID-Based Encryption |
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| 1st Author's Name | Ying Zhang |
| 1st Author's Affiliation | Chuo University (Chuo Univ.) |
| 2nd Author's Name | Takashi Kitagawa |
| 2nd Author's Affiliation | Institute of Industrial Science,the University of Tokyo (Univ. of Tokyo.) |
| 3rd Author's Name | Nuttapong Attrapadung |
| 3rd Author's Affiliation | National Institute ofAdvanced Industrial Science and Technology (AIST) |
| 4th Author's Name | Hideki Imai |
| 4th Author's Affiliation | Chuo University/National Institute ofAdvanced Industrial Science and Technology (Chuo Univ/AIST) |
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| Speaker | Author-1 |
| Date Time | 2010-03-05 13:50:00 |
| Presentation Time | 25 minutes |
| Registration for | ISEC |
| Paper # | IT2009-110, ISEC2009-118, WBS2009-89 |
| Volume (vol) | vol.109 |
| Number (no) | no.444(IT), no.445(ISEC), no.446(WBS) |
| Page | pp.255-260 |
| #Pages | 6 |
| Date of Issue | 2010-02-25 (IT, ISEC, WBS) |
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