关键词: 移动RFID, 动态密钥, 安全, 隐私, 认证协议, 协议分析

Abstract: In view of the poor mobility of the existing RFID security authentication protocol, as well as the tracking, and data synchronization problems caused by the failure of the agreements key update, this paper proposes a mobile RFID security authentication protocol based on dynamic key. Random number is used to select the authentication key dynamically, which can not only keep the freshness of the key, but also avoid tracking and data synchronization problems. A preprocess of reader is taken on the server, which can effectively prevents impersonation and denial of service attacks on the server from the external illegal reader. This paper analyses the performance and security of the protocol. The analysis results show that the protocol meets the security requirements and has good mobility and low computational complexity, which is suitable for large-scale mobile RFID system.

Key words: mobile RFID, dynamic key, safety, privacy, authentication protocol, protocol analysis