Paper Abstract and Keywords |
Presentation |
2007-07-20 15:45
Efficient Group Signature Scheme based on the DDH Problem Takuya Yoshida, Koji Okada (Toshiba Solutions) ISEC2007-66 |
Abstract |
(in Japanese) |
(See Japanese page) |
(in English) |
We propose an efficient group signature scheme, which is based on the DDH problem. A group signature scheme can be used as a useful tool to protect personal information and privacy. However, its computational efficiency is far less efficient than ordinary signature schemes and thus it is often considered to be impractical. The computational cost of signature generation of our scheme is only 3 times of RSA signature whereas those of the previous schemes are about 8 to more than 200 times and the length of a member secret key of the proposed schemes is much shorter than RSA signature and previous group signature schemes. Moreover, the proposed scheme can be efficiently implemented on elliptic curves. |
Keyword |
(in Japanese) |
(See Japanese page) |
(in English) |
group signature / DDH problem / / / / / / |
Reference Info. |
IEICE Tech. Rep., vol. 107, no. 141, ISEC2007-66, pp. 141-146, July 2007. |
Paper # |
ISEC2007-66 |
Date of Issue |
2007-07-13 (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) |
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ISEC2007-66 |
Conference Information |
Committee |
ISEC SITE IPSJ-CSEC |
Conference Date |
2007-07-19 - 2007-07-20 |
Place (in Japanese) |
(See Japanese page) |
Place (in English) |
Future University-Hakodate |
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(See Japanese page) |
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Paper Information |
Registration To |
ISEC |
Conference Code |
2007-07-ISEC-SITE-IPSJ-CSEC |
Language |
Japanese |
Title (in Japanese) |
(See Japanese page) |
Sub Title (in Japanese) |
(See Japanese page) |
Title (in English) |
Efficient Group Signature Scheme based on the DDH Problem |
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group signature |
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DDH problem |
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1st Author's Name |
Takuya Yoshida |
1st Author's Affiliation |
Toshiba Solutions Corporation (Toshiba Solutions) |
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Koji Okada |
2nd Author's Affiliation |
Toshiba Solutions Corporation (Toshiba Solutions) |
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Speaker |
Author-1 |
Date Time |
2007-07-20 15:45:00 |
Presentation Time |
25 minutes |
Registration for |
ISEC |
Paper # |
ISEC2007-66 |
Volume (vol) |
vol.107 |
Number (no) |
no.141 |
Page |
pp.141-146 |
#Pages |
6 |
Date of Issue |
2007-07-13 (ISEC) |
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