关键词: 无线射频识别（RFID）, 密钥生成, WiKey算法, 假名, 双向认证, GNY逻辑

Abstract: Aiming at the security and cost problem of the WiKey algorithm in the key generation algorithm of the existing radio frequency identification system, an improved wireless key generation algorithm for RFID system based on partial pseudonym ID is proposed. In the case where the backward channel can also be tapped, some pseudonym ID information is added to reduce the introduction of other information, and to a certain extent, to prevent the true identification of labels leaked information. Secret data are encrypted, transmitted and verified by XOR operation and bidirectional authentication mechanism, so that the algorithm can resist active and passive attacks. Finally, the GNY logical proof and security and performance analysis of the three different cases show the feasibility of the algorithm.

Key words: Radio Frequency Identification（RFID）, key generation, WiKey algorithm, pseudonym, bidirectional authentication, GNY logic