A Secure Group Signature Scheme
Liu Gu-sheng · 2007
Based on a problem introduced by Lysyanskaya,Rivest,Sahai and Wolf,using bilinear maps,this paper proposes a new group signature scheme.There exist two trusted frameworks such as group manager and revocation manager.The group manager issues a joining member a membership certificate,and the revocation manager is able to open a signature and reveal the identity of the signer.The membership certificate is unforgeable because it is based on LRSW problem.The group signature is a non-interactive zero-knowledge proof of a blinded membership certificate on the message m.Therefore,the group scheme proposed in this paper is in possession of all properties of security that a good group signature scheme should hold.