An Improved Identity-Based Group Signature Scheme

In order to improve the credibility of KGC in the group signature, this paper proposes a new identity-based dynamic group signature scheme. A New open authentication algorithm ensures that the scheme can resist forgery attack, and remove members of the group by time slice based management program, which greatly reduces the computation and transmission of the certificate time so as to improve efficiency. The group signature model can effectively solve the conflicts of computation and transmission of the certificate time with new identity-based dynamic group signature scheme as well as multiple condition attributes. The scheme improved analytic efficiency, meanwhile improving group signature technology security. The results show that the scheme guarantees the security of group signature.