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On-line Access: 2024-08-27

Received: 2023-10-17

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Journal of Zhejiang University SCIENCE A 2005 Vol.6 No.6 P.560-564

http://doi.org/10.1631/jzus.2005.A0560


A novel group signature with one time secret key


Author(s):  XIE Qi, YU Xiu-yuan

Affiliation(s):  Department of Mathematics, Zhejiang University, Hangzhou 310027, China; more

Corresponding email(s):   qixie68@yahoo.com.cn, qixie@hztc.edu.cn

Key Words:  Cryptography, Group signature, Discrete logarithm problem, Factoring problem



Abstract: 
A new group signature with one time secret key is proposed. The main merits are that it only needs the trusted center issuing the partial secret key one time for each group member; and that the group member can generate his different secret key each time when he wants to sign a message. The group public key is constant and the size of the signature is independent of the number of group members. The total computation cost of signature and verification requires only 8 modular exponentiations.

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