Paper Abstract and Keywords |
Presentation |
2021-03-05 11:45
A Proposal of Decentralized Multi-authority Traceable Anonymous Credential Scheme and Its Generic Construction Hiroaki Anada (Univ. of Nagasaki) IT2020-149 ISEC2020-79 WBS2020-68 |
Abstract |
(in Japanese) |
(See Japanese page) |
(in English) |
We propose an anonymous credential scheme and its generic construction, where there are independent decentralized multi-authorities which issue attribute credentials. A feature is that the authorities are capable of tracing users who generate proofs for their attribute keys. The syntax, security definitions and a generic construction are based on those of the dynamic group signature scheme due to Bellare et al. (CT-RSA 2005). That is, the building blocks of the generic construction are a digital signature scheme, a public-key encryption scheme and a non-interactive zero-knowledge proof system. Security properties are based on existential unforgeability against chosen-message attacks, indistinguishability against chosen-ciphertext attacks and computational zero-knowledge and simulation-soundness. %The construction is by employing a dynamic group signature scheme. %The security is reduced in the random oracle model to the security of the building blocks. Finally, we mention an instantiation in the lattice structure having the hardness of the Ring Short Integer Solution (RSIS) and the Ring Learning With Errors (RLWE) problems. |
Keyword |
(in Japanese) |
(See Japanese page) |
(in English) |
anonymous credential scheme / attribute-based / traceable / dynamic group signature / lattice / / / |
Reference Info. |
IEICE Tech. Rep., vol. 120, no. 411, ISEC2020-79, pp. 225-231, March 2021. |
Paper # |
ISEC2020-79 |
Date of Issue |
2021-02-25 (IT, ISEC, WBS) |
ISSN |
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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IT2020-149 ISEC2020-79 WBS2020-68 |
Conference Information |
Committee |
WBS IT ISEC |
Conference Date |
2021-03-04 - 2021-03-05 |
Place (in Japanese) |
(See Japanese page) |
Place (in English) |
Online |
Topics (in Japanese) |
(See Japanese page) |
Topics (in English) |
Joint Meeting of WBS, IT, and ISEC |
Paper Information |
Registration To |
ISEC |
Conference Code |
2021-03-WBS-IT-ISEC |
Language |
Japanese |
Title (in Japanese) |
(See Japanese page) |
Sub Title (in Japanese) |
(See Japanese page) |
Title (in English) |
A Proposal of Decentralized Multi-authority Traceable Anonymous Credential Scheme and Its Generic Construction |
Sub Title (in English) |
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anonymous credential scheme |
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attribute-based |
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traceable |
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dynamic group signature |
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lattice |
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1st Author's Name |
Hiroaki Anada |
1st Author's Affiliation |
University of Nagasaki (Univ. of Nagasaki) |
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Speaker |
Author-1 |
Date Time |
2021-03-05 11:45:00 |
Presentation Time |
25 minutes |
Registration for |
ISEC |
Paper # |
IT2020-149, ISEC2020-79, WBS2020-68 |
Volume (vol) |
vol.120 |
Number (no) |
no.410(IT), no.411(ISEC), no.412(WBS) |
Page |
pp.225-231 |
#Pages |
7 |
Date of Issue |
2021-02-25 (IT, ISEC, WBS) |
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