一种新的防窃听NFC通信机制  

A Novel Anti-eavesdrop Communication Mechanism for NFC

作　　者：盖玲[1] 

机构地区：[1]江汉大学政法学院,湖北武汉430056

出　　处：《无线电工程》2014年第3期67-68,80,共3页Radio Engineering

摘　　要：针对于近场通信(Near Field Communication,NFC)中存在窃听的安全问题,提出了一种新的NFC防窃听通信机制,可以降低每bit窃听的概率。通过通信双方发送同步信号的方式使双方信号可以叠加,从而使窃听者不能正确地判断出0和1叠加这种情况下通信双方发送的数据,使每bit被窃听的概率降低到75%,而通信双方可以通过叠加信号和自身信号相减得到对方通信内容。通过分析发现此方法基本上不会增加额外硬件消耗。通过硬件验证,在全双工的工作模式下,此通信机制防窃听能力符合理论值。For the eavesdropping problems in the NFC communication,this paper proposes a novel anti-eavesdrop communication mechanism,which can reduce the eavesdropping probability of each bit. It requires that both sides of communication can synchronously send their signals,so their signals can be superposed in the channel,and the eavesdropper cannot correctly judge the data when one part sends 1 and the other sends 0,but both communicating parties can judge the signal by the superposed signal and their own sending signal. It can reduce eavesdropping probability of every bit to 75%.This method doesn’t increase additional hardware cost.The hardware verifica-tion show that,in full duplex mode,the anti-eavesdrop capability of this communication mechanism accord with the theoretical value.

关 键 词：信息安全 NFC 防窃听 

分 类 号：TP309[自动化与计算机技术—计算机系统结构]