A Study on Electronic-Money Technology Using Near Field Communication

Recently, NFC (Near Field Communication) and its related technologies are being loaded into smartphones. Consequently, payment and data exchange are easily made through NFC. However, smartphone can be permitted an attack such as a user impersonation by exposure to information in the communication process. Therefore, the communication between mobile devices in NFC environments must be made safely with leaving any information at the other party. Moreover, it should be light-weight for wireless communication. In this paper, we propose an authentication method and a scheme of key agreement that can reduce the weight by using a hash function and XOR operation algorithms for mobile payment systems. We confirm that the proposal method leaves no information at the other party.