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| Presentation | 2022-03-08 15:10 Proposal of a lattice-based accumulator with efficient update function Yuta Maeno, Hideaki Miyaji, Atsuko Miyaji (Osaka Univ)  ICSS2021-80 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | In recent years, as the digitization of various information and assets continues, the technology of proving the ownership of data through signatures has been actively studied. Among them, accumulator is a proof of possession technique that compresses the source of a set of data into a small value and proves that each element of the set is contained by using the compressed value. Libert et al. and Ling et al. proposed an accumulator based on the lattice problem, and proposed a group signature protocol using it. However, the functions of updating the value of the accumulator when multiple elements of the compressed set are updated, and proving that the compressed set contains multiple specific elements at the same time, are guaranteed in the accumulator based on the discrete logarithm problem, but not in the accumulator based on the lattice problem. There are many functions that are guaranteed in the accumulator based on the discrete logarithm problem but not in the accumulator based on the lattice problem. In this study, we propose a new function for the lattice-based accumulator of Ling et al. to update the value of the accumulator when one element of the compressed data set is updated and to update the value of the accumulator when multiple elements of the set are updated. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | accumulator / lattice-based accumulator / group signature / lattice-based group signature / update / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 121, no. 410, ICSS2021-80, pp. 129-134, March 2022. | |
| Paper # | ICSS2021-80 | |
| Date of Issue | 2022-02-28 (ICSS) | |
| 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) | |
| Download PDF | ICSS2021-80 |
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| Conference Information | |
| Committee | ICSS IPSJ-SPT |
| Conference Date | 2022-03-07 - 2022-03-08 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Online |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Security, Trust, etc. |
| Paper Information | |
| Registration To | ICSS |
| Conference Code | 2022-03-ICSS-SPT |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Proposal of a lattice-based accumulator with efficient update function |
| Sub Title (in English) | |
| Keyword(1) | accumulator |
| Keyword(2) | lattice-based accumulator |
| Keyword(3) | group signature |
| Keyword(4) | lattice-based group signature |
| Keyword(5) | update |
| Keyword(6) | |
| Keyword(7) | |
| Keyword(8) | |
| 1st Author's Name | Yuta Maeno |
| 1st Author's Affiliation | Osaka University (Osaka Univ) |
| 2nd Author's Name | Hideaki Miyaji |
| 2nd Author's Affiliation | Osaka University (Osaka Univ) |
| 3rd Author's Name | Atsuko Miyaji |
| 3rd Author's Affiliation | Osaka University (Osaka Univ) |
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| Speaker | Author-1 |
| Date Time | 2022-03-08 15:10:00 |
| Presentation Time | 20 minutes |
| Registration for | ICSS |
| Paper # | ICSS2021-80 |
| Volume (vol) | vol.121 |
| Number (no) | no.410 |
| Page | pp.129-134 |
| #Pages | 6 |
| Date of Issue | 2022-02-28 (ICSS) |
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