一种轻量级RFID安全协议的改进
Enhancement of a Lightweight RFID Security Protocol
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摘要: 针对相关文献提出的基于异或和哈希算法的轻量级射频识别认证技术,对其潜在的危险进行了深入的分析。在此基础之上,结合应用于Internet或应用系统中的传统的安全机制和一些轻量级的节省资源的安全机制,对上述协议进行改进,提出一种新的轻量级射频识别安全协议。该协议适用于现实的系统中,以避免已确认的潜在危险,并充分考虑在RFID系统中,RFID标签低成本的要求、强大的约束性以及对外界不可抗拒性等限制RFID发展的主要因素。Abstract: This article has a deep analysis on the potential danger of the Exclusive OR (XOR) and Hash chain based light weight Radio Frequency Edentification (RFID) security protocol brought by some articles. On the base of analysis, combining the traditional security schemes widely used in Internet or existing application systems and some light weight and resource-saving security mechanism, we enhance the lightweight RFID security protocol mentioning above and give a new light weight RFID security protocol. Special attention is focused on the deployment considerations for applying the protocol in real application to avoid the identified potential risk. Full consideration is given to the low cost demands for RFID tags, the power restrictions, and the non-resistant against physical tampering feature, which are common limitations in the RFID system.