Fairness is an important attribute that electronic cash transaction protocol should satisfy

as dishonesty of the transaction entity and unreliable communication are the major reasons that harm transaction fairness. Focusing on the transaction unfairness issue caused by dishonest behavior of the transaction entity

and using the methodology of undeniable conversion signature for reference

interactive confirmer mechanism to effectively solve the problem of conflict between fairness and anonymity of electronic cash transaction protocol is established. Based on improved CEMBS verifiable algorithm

a new fair electronic cash transaction protocol is proposed and its attributes are analyzed. The analysis demonstrates that the proposed protocol can effectively avoid the ambiguity of transaction while satisfying the need for fairness and anonymity.