The Study and Application of Group Blind Signature Scheme in E-Commerce´s Security

The development of e-commerce speeds up on-line commodity circulation, so safe and efficient conduct of electronic payment has become a biggest problem which needs to be solved urgently. In this paper, a scheme of dynamic group blind signature based on elliptic curve discrete logarithm problem is adopted. And at the basic of this scheme, a security model of group blind signature based on elliptic curve discrete logarithm problem is constituted which extends the group blind signature and the knowledge signature to the elliptic curve cyclic group. It synthesizes the elliptic curve cryptogram scheme, the data digest and the theory of group blind signature.