基于Hash链的RFID隐私增强标签研究

Research on Hash chain-based RFID privacy enhancement tag

无线射频识别(RFID)作为一种新型的自动识别技术在供应链与零售业中得到了广泛的应用。然而由于RFID标签强大的追踪能力,RFID的广泛应用也势必给消费者带来新的隐私威胁问题。在构造RFID方案时有几个技术关键点,尤其重要的是消费者隐私与标签信息的安全问题。低成本是另外一个关键。针对这些问题,讨论并阐明了RFID系统的需求与限制,分析了现有的一些相关的RFID方案的特性与问题。最后提出了一种简单的采用低成本的Hash链机制的安全模式标签来增强消费者隐私。

Radio Frequency Identification （RFID） as a new automated identification technology has become popular with the supply chain and retail business. However, the widespread employment of RFID tags may bring new threats to the consumers＇ privacy, due to the powerful tracking capability of the tags. There are several important technical points when constructing an RFID scheme. What is particularly important is the issue of consumers＇ privacy and security of tag information. Low cost implementation is another one. To address these issues, the requirements and restrictions of RFID systems were discussed and clarified in this paper, and the features and issues pertinent to several current RFID schemes were analyzed. Finally, a simple secure mode tag which adopted a low cost hash chain mechanism to enhance the consumers＇ privacy was proposed.