Affiliations: Department of Computer Science and Engineering, Shanghai Jiao Tong University, 1954 Huashan Road, Shanghai 200030, the People's Republic of China, e‐mail: ares@sjtu.edu.cn, cao‐zf@cs.sjtu.edu.cn, xue‐qsh@cs.sjtu.edu.cn
Note: [] Corresponding author.
Abstract: Since threshold proxy signature has been proposed, all threshold proxy signature schemes are based on the discrete logarithm problems in the modular multiplicative group which has an element g with a large prime order. Nowadays this kind of threshold proxy signature schemes become more and more complex and time‐consuming for security and specific requirement. In this paper, we propose a (bilinear) pairing‐based threshold proxy signature scheme with known signers, analyze its security and check the following properties the proposed scheme has: non‐repudiation, unforgeability, identifiability, distinguishability, verifiability, prevention of misuse of proxy signing right, etc. Moreover, we point out that the proposed scheme is of great efficiency by comparing it with Sun's and Hsu et al.'s scheme.
