International Journal of Engineering & Technology IJET-IJENS Vol:17 No:03 7 174703-5858-IJET-IJENS © June 2017 IJENS I J E N S A new design of Mobile Payment system based on NFC Technology Ahmed H. Ali 1 , Reham Abdellatif Abouhogail 2 , Ibrahim F. Tarrad 3 and Mohamed I. Youssef 4 1,2 Electrical Quantities Metrology Dept., National Institute for Standards, Egypt 1 Ahmed.hussien@hotmail.com , 2 rehlatif@yahoo.com 3,4 Electrical Engineering Department Al-Azhar University, Egypt 4 tarradif@gmail.com Abstract-- Mobile Payment researches has increased rapidly in recent years. A most recent researchers are focusing on contactless mobile payment systems that uses mobile phones wireless technologies to achieve payment system success factors like availability, simplicity, security, and privacy of payment transaction. Moreover, Mobile technologies has a number of security risks. This paper proposes a new secured design of mobile payment system using a Near Field Communication (NFC) technology. The proposed system uses the features of NFC system to achieve an efficient and complete payment cycle. Furthermore, a solution to the relay attack is proposed. Also the proposed design satisfies the three most important security measures, Confidentiality, integrity and availability. Index Term-- Mobile Payment Privacy protection; Secured Payment System; NFC Payment System. 1. INTRODUCTION As mobile devices have become one of the most trusted personal devices, also mobile payment is defined as interactions between parties in an electronic Payment (e- payment) system with specific data and certain payment capabilities, the concept of mobile payment (m-payments) includes any payment in which a mobile device is used in at least one step of payment process [1]. The m-payment services can be done through a none-bank party (as financial or credit institutions) that independent of pre-existing bank accounts [2]. Figure.1 shows m-payment basic process steps, m-payment system main steps are the registration and forwarding the authorized and validated payment transactions [3]. Payment system life-cycle starts with payment request creation then payment authorization, and ended by payment request completion [4]. Fig. 1. m-Payment Conceptual Schema Moreover, the proposed m-payments contains four entities: consumer who subscribe to a service, merchants who provide product or service to consumers, payment service provider, which controls the payment process in additional to the financial organization (FO) who manage users financial accounts [5]. The proposed system simulates a payment transaction process where an NFC mobile phone is used as a payment terminal at a point of sale device (POS). Also, the transaction is made through NFC communication between the customer NFC-phone and POS contactless reader which connected to a computer. The reader acts as a payment card terminal and an application running on the Personal Computer (PC) acts as a cash register system. An overview of the proposed system is shown in Figure 2.