Cryptanalysis and improvement on new type of group signature scheme
一种新型群签名的分析与改进*

The recently proposed new type of group signature scheme was constructed on a new signature derived from the Boneh-Boyen short signature scheme. However, the new signature scheme was fault thus the group signature was flawed. Besides, the proposed group signature scheme was long in length and the signatures of the same signer are linkable. Further, this paper proposed an improved scheme.