The Study Of Multi-bank Divisible E-Cash Protocol

With network technology developing rapidly, the electronic commerce has been moreand more people’s attention and favor. Electronic cash transactions is a very importante-commerce activities, it can simulate real currency transactions and has a higher level ofsecurity and convenience. Currently, E-cash transaction protocol focuses on its usefulnesspracticality.First, in accordance with the drawback of the existing divisible e-cash and multi-banke-cash in the traditional network, proposes a new model of multi-bank divisible e-cash andachieve the multi-bank and the divisibility of e-cash reasonably. In order to solve theclassic binary tree’s low efficiency of achieving divisibility, proposes a new model ofbinary tree with all nodes can be spent and a new principle of cost: combination andsubdivision. Finally, based on the model of multi-bank divisible e-cash and a groupsignature technology, this article builds a multi-bank divisible e-cash scheme withfairness.Second, because multi-bank e-cash scheme achieved by group signature is notefficient and there are some limitations of traditional network, proposes a new model ofmulti-bank divisible e-cash applying to mobile network using proxy digital signaturebased on elliptic curves and design a multi-bank divisible e-cash improving security andreducing the computation of the system.Finally, this article developes an e-cash scheme applying to mobile network withinwinphone development environment. It can simulate the basic process and verify thecorrectness and practicality of protocol.