A Novel Authentication Protocol for Micropayment with Wearable Devices

Abstract

Wearable devices show rapid market growth in the last five years. General application areas include fitness trackers, watches, glasses, smart clothing, and healthcare. Recently, it becomes a hot topic for people to adopt wearable devices as a tool to conduct micropayment in their daily life. Given the sensitivity of required information to perform micropayment, a robust and secure authentication protocol is necessary to ensure the security and the credibility of all transmitted information. The existing security mechanism for wearable device technology only resides in network layer such as the security mechanism used in Bluetooth Low Energy (BLE) standard. In this paper, we propose an authentication protocol to support micropayment using wearable devices such as smart-watch. Our proposed authentication protocol generates and utilizes unique session key for each communication process along with secret string stored in the wearable device (WD) and the corresponding wearable payment counter (WP counter) to ensure the security robustness of our protocol. Finally, we present security analysis for the proposed protocol.