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| Presentation | 2008-09-12 15:20 Reduction of Public-Key Size in a Revocable Group Signature Scheme with Constant Costs for Signing and Verifying Hiroki Fujii, Yuta Hira, Toru Nakanishi, Nobuo Funabiki (Okayama Univ.)  ISEC2008-68 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | Group signature scheme is the digital signature scheme enhancing the privacy of the user. We proposed a revocable scheme where signing and verifying require only $O(1)$ costs, while various schemes were previously proposed. However, the scheme has a problem that the public key size is $O(N)$. In this paper, we extend the scheme to reduce the public key size into $O(\sqrt{N})$. In addition, we implement it to confirm the reduction of the size and show that the scheme works at practical execution times. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | Group signature / anonymity / bilinear map / pairing / / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 108, no. 207, ISEC2008-68, pp. 33-38, Sept. 2008. | |
| Paper # | ISEC2008-68 | |
| Date of Issue | 2008-09-05 (ISEC) | |
| 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 | ISEC2008-68 |
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| Conference Information | |
| Committee | ISEC |
| Conference Date | 2008-09-12 - 2008-09-12 |
| 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 | 2008-09-ISEC |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Reduction of Public-Key Size in a Revocable Group Signature Scheme with Constant Costs for Signing and Verifying |
| Sub Title (in English) | |
| Keyword(1) | Group signature |
| Keyword(2) | anonymity |
| Keyword(3) | bilinear map |
| Keyword(4) | pairing |
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| 1st Author's Name | Hiroki Fujii |
| 1st Author's Affiliation | Okayama University (Okayama Univ.) |
| 2nd Author's Name | Yuta Hira |
| 2nd Author's Affiliation | Okayama University (Okayama Univ.) |
| 3rd Author's Name | Toru Nakanishi |
| 3rd Author's Affiliation | Okayama University (Okayama Univ.) |
| 4th Author's Name | Nobuo Funabiki |
| 4th Author's Affiliation | Okayama University (Okayama Univ.) |
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| Speaker | Author-1 |
| Date Time | 2008-09-12 15:20:00 |
| Presentation Time | 25 minutes |
| Registration for | ISEC |
| Paper # | ISEC2008-68 |
| Volume (vol) | vol.108 |
| Number (no) | no.207 |
| Page | pp.33-38 |
| #Pages | 6 |
| Date of Issue | 2008-09-05 (ISEC) |
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