基于激活标志位的改进RFID密钥无线生成算法

In the scenario of wireless generation of three common radio frequency identification keys, the security key problem of replay attack, key forgery attack and RFID tag identity ID leakage and the lack of algorithm theory are found in the corresponding key generation algorithms. This paper designed a more secure RFID-based key generation algorithm based on activation flag. The improved algorithm only combined multiple super-lightweight bit operations to construct a secure algorithm framework, which reduced cost and improves efficiency. It used the activation flag AckBitmechanism and the freshness mechanism to resist replay and key forgery attacks. Through the complete GNY logic proof process and safety comparison analysis, it proved the safety and feasibility of the target algorithm. Finally, This paper presented the comparison of the tag cost between the original algorithm and the improved algorithm, which shows that the improved algorithm has higher security under the condition of satisfying the low cost.