A Secure and Efficient Mobile Payment Protocol with Fair-Exchange Feature

Abstract

Mobile commerce helps transactions to be done via mobile devices in a wireless environment. Several mobile payment protocols have already been developed trying to provide essential security requirements of users. So far, there has been low attention to fair-exchange requirement in mobile payment protocols while it is considered as an important factor in users' point of view. In most of mobile payment protocols, client must pay for the product before he delivers it. This is an unfair situation that is addressed in this paper by proposing a mobile payment protocol that not only provides the security requirements but also provides fairexchange feature. This protocol is based on the APSWPP protocol. In this protocol client receives committed product before paying and after paying for the product it can get the secret of committed product. Also to serve fair-exchange completely, some steps are added to main steps of this protocol. The security of our proposed protocol is validated by AVISPA tool. © 2020 IEEE.