Improved E-cash Protocol

Abstract - Electronic cash e-cash has been more and more popular in the electronic commerce transaction protocol. Ronggong Song and Larry Korba present their views on e-cash to improve Abe and Fujisakis protocol. Their protocol achieves non-repudiation and anonymity services between customer and merchant. However there still has weak fairness in their protocol. Therefore we propose a modified e-cash protocol to avoid weak fairness. The properties of our protocol include 1 fair exchange for everyone that include in the protocol 2 anonymity for the customer and 3 non-repudiation for the customer merchant and bank.