Pointcheval-Sanders Signature-Based Synchronized Aggregate Signature

【Author】 Tezuka, Masayuki; Tanaka, Keisuke

【Source】INFORMATION SECURITY AND CRYPTOLOGY - ICISC 2022

【影响因子】

【Abstract】Synchronized aggregate signature is a special type of signature that all signers have a synchronized time period and allows aggregating signatures which are generated in the same period. This signature has a wide range of applications for systems that have a natural reporting period such as log and sensor data, or blockchain protocol. In CT-RSA 2016, Pointcheval and Sanders proposed the new randomizable signature scheme. Since this signature scheme is based on type-3 pairing, this signature achieves a short signature size and efficient signature verification. In this paper, we design the Pointchcval-Sanders signature-based synchronized aggregate signature scheme and prove its security under the generalized Pointcheval-Sanders assumption in the random oracle model. Our scheme offers the most efficient aggregate signature verification among synchronized aggregate signature schemes based on bilinear groups.

【Keywords】Synchronized aggregate signature; Pointcheval-Sanders signature; Bilinear groups

【发表时间】2023

【收录时间】2023-07-01

【文献类型】理论性文章

【主题类别】

区块链技术-核心技术-签名方案