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| Presentation | 2024-03-14 17:00 Reconstruction of Boyer quantum algorithm and its application to hash puzzles Chris Idota, Yuichi Kaji (Nagoya Univ.)  IT2023-132 ISEC2023-131 WBS2023-120 RCC2023-114 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | This study investigates the computational complexity of solving hash puzzles using quantum algorithms. A hash puzzle is a generalization of the pre-image computation of a cryptographic hash function and is formalized as a problem for finding a pre-image whose hash value falls within a specified target set. It is known that Grover's quantum search algorithm and Boyer's algorithm, which is a Bayesian utilization of Grover's algorithm, can compute the pre-image of a given hash value more efficiently than classical (non-quantum) algorithms. However, those quantum algorithms use implicit assumptions and approximations that are not compatible with a general hash puzzle. This study reconstructs Boyer's algorithm by excluding those assumptions and approximations and clarifies the relation between the size of the target set and the complexity needed for solving the puzzle. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | hash puzzle / cryptographic hash function / quantum algorithm / Grover's search algorithm / Boyer's algorithm / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 123, no. 424, ISEC2023-131, pp. 358-365, March 2024. | |
| Paper # | ISEC2023-131 | |
| Date of Issue | 2024-03-06 (IT, ISEC, WBS, RCC) | |
| 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 | IT2023-132 ISEC2023-131 WBS2023-120 RCC2023-114 |
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| Conference Information | |
| Committee | RCC ISEC IT WBS |
| Conference Date | 2024-03-13 - 2024-03-14 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Osaka Univ. (Suita Campus) |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | RCC, ISEC, IT, WBS |
| Paper Information | |
| Registration To | ISEC |
| Conference Code | 2024-03-RCC-ISEC-IT-WBS |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Reconstruction of Boyer quantum algorithm and its application to hash puzzles |
| Sub Title (in English) | |
| Keyword(1) | hash puzzle |
| Keyword(2) | cryptographic hash function |
| Keyword(3) | quantum algorithm |
| Keyword(4) | Grover's search algorithm |
| Keyword(5) | Boyer's algorithm |
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| Keyword(7) | |
| Keyword(8) | |
| 1st Author's Name | Chris Idota |
| 1st Author's Affiliation | Nagoya University (Nagoya Univ.) |
| 2nd Author's Name | Yuichi Kaji |
| 2nd Author's Affiliation | Nagoya University (Nagoya Univ.) |
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| Speaker | Author-1 |
| Date Time | 2024-03-14 17:00:00 |
| Presentation Time | 25 minutes |
| Registration for | ISEC |
| Paper # | IT2023-132, ISEC2023-131, WBS2023-120, RCC2023-114 |
| Volume (vol) | vol.123 |
| Number (no) | no.423(IT), no.424(ISEC), no.425(WBS), no.426(RCC) |
| Page | pp.358-365 |
| #Pages | 8 |
| Date of Issue | 2024-03-06 (IT, ISEC, WBS, RCC) |
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