Abstract
Near Field Communication (NFC) has been used for short range communications in a number of applications for consumer electronics devices. Specifically, NFC has been used in electronic payment systems. To ensure secure communications, security protocols for various NFC applications have been proposed. Recently, a conditional privacy preserving security protocol was introduced. However this paper demonstrates that the protocol is vulnerable to two impersonations attacks and then proposes a new secure pseudonym-based NFC protocol that eliminates vulnerabilities of the previous security protocol. Security and performance analysis results confirm that the proposed protocol could solve security problems of the previously introduced NFC security protocol with a marginal computational cost increase(1).