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Authors: Takuya Ezure and Masaki Inamura

Affiliation: Graduate School of Science and Engineering, Tokyo Denki University, Saitama and Japan

ISBN: 978-989-758-359-9

Keyword(s): Digital Signature, Aggregate Signature, Authority Transfer, Gap-Diffie-Hellman.

Abstract: We propose an order-specified aggregate authority-transfer signature based on the gap Diffie-Hellman group. In various organizations, to reduce the number of approvals required by someone who has relevant authority, the authority for a task can be transferred to a subordinate or another person who executes the task. Currently, authority is commonly transferred via a document, such as an authority-transfer agreement. However, to speed up the process and maintain the integrity of the evidence, we believe that it is better to transfer such authority via a computer network. In this paper, we propose an authority-transfer signature scheme using an order-specified aggregate signature and a group signature, and we propose a new authority-transfer system. In the signature method, a group signature scheme is used to express authority. Moreover, it transfers the authority owned by the manager to another member of the group. The difference from the group manager of the group signature is that th is manager not only manages the group but also delegates authority. With the order-specified aggregate signature, it is possible to handle multiple signatures efficiently while verifying the order. We show that a safe and efficient authority-transfer system can be constructed using this new digital signature. (More)

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Paper citation in several formats:
Ezure, T. and Inamura, M. (2019). An Order-specified Aggregate Authority-transfer Signature.In Proceedings of the 5th International Conference on Information Systems Security and Privacy - Volume 1: ICISSP, ISBN 978-989-758-359-9, pages 309-318. DOI: 10.5220/0007359103090318

@conference{icissp19,
author={Takuya Ezure. and Masaki Inamura.},
title={An Order-specified Aggregate Authority-transfer Signature},
booktitle={Proceedings of the 5th International Conference on Information Systems Security and Privacy - Volume 1: ICISSP,},
year={2019},
pages={309-318},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0007359103090318},
isbn={978-989-758-359-9},
}

TY - CONF

JO - Proceedings of the 5th International Conference on Information Systems Security and Privacy - Volume 1: ICISSP,
TI - An Order-specified Aggregate Authority-transfer Signature
SN - 978-989-758-359-9
AU - Ezure, T.
AU - Inamura, M.
PY - 2019
SP - 309
EP - 318
DO - 10.5220/0007359103090318

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