Abstract
We propose a new order-specified aggregate authority-transfer signature based on the gap Diffie-Hellman group and evaluate the performance of it. In companies, in order to prevent stagnation of the work flow or suspension of operations accompanied by an accident due to concentration of authority to one or a few people, distribution and delegation of authority to multiple persons is performed. Currently, since various operations in a company are performed via a computer network, a mechanism of authority transfer to allow delegation and distribution of authority quickly and properly on this network is needed. In this paper, we propose an authority-transfer signature scheme combining an order-specified aggregate signature and a group signature. In our method, a signature scheme uses a group signature scheme to guarantee authority. Moreover, it transfers the authority owned by the manager to another member of the group. The difference from the group manager of existing group signatures is that this manager not only manages the group but also delegates authority. Regarding this signature, we implement a simulation program and evaluate the performance. As a result, we show that our proposal is practical.
Supported by JSPS KAKENHI Grant Number JP16K00192.
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Ezure, T., Inamura, M. (2020). Proposal and Performance Evaluation of an Order-Specified Aggregate Authority-Transfer Signature. In: Mori, P., Furnell, S., Camp, O. (eds) Information Systems Security and Privacy. ICISSP 2019. Communications in Computer and Information Science, vol 1221. Springer, Cham. https://doi.org/10.1007/978-3-030-49443-8_6
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