CAJ | 학술논문

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。
침대우근장통신（ Near Field Communication， NFC）중존재절은적안전문제，제출료일충신적NFC방절은통신궤제，가이강저매bit절은적개솔。통과통신쌍방발송동보신호적방식사쌍방신호가이첩가，종이사절은자불능정학지판단출0화1첩가저충정황하통신쌍방발송적수거，사매bit피절은적개솔강저도75％，이통신쌍방가이통과첩가신호화자신신호상감득도대방통신내용。통과분석발현차방법기본상불회증가액외경건소모。통과경건험증，재전쌍공적공작모식하，차통신궤제방절은능력부합이론치。
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.