关键词: 无线射频识别, 密钥生成, 密钥托管, 假名标识, 加密, 窃听, GNY逻辑

Abstract: In view of the problems including the key escrow,the insecurity of the wireless channel and the high cost of the tag in the key generation process of Radio Frequency Identification(RFID) system,an wireless key generation protocol for RFID system is proposed.On the premise that the forward and backward channels can be eavesdropped,the paper introduces the pseudonym logo to prevent the disclosure of secret information.The paper only uses simple bit operations to reduce the tag cost and computation,and it uses Exclusive OR(XOR) and shift operations to encrypt and transmit information,which aims to ensure the security of protocol.The proposed protocol is formally proved by using GNY logic.The security and performance of the protocol are analyzed under three kinds of applications,which are the single label individual key generation,batch label key generation and group label key generation.It is proved that the proposed protocol has higher security and lower cost.

Key words: Radio Frequency Identification(RFID), key generation, key escrow, pseudonym logo, encryption, eavesdrop, GNY logic