Research on Anti-eavesdropping Communication Mechanism for NFC

With the rapid development of mobile payment, people pay more attention to the safety problems of eavesdropping in NFC communication. This paper proposes a new NFC anti-eavesdropping communication mechanism, by both sides of communication transmission scrambling synchronization signal and interference signal in order to make the two sides signal can be superimposed, so that an eavesdropper can not correctly judge both sides of communication data sent by the superposition of 0 and 1 in this case. Then, the probability of each bit eavesdropping is reduced to 70% and both sides of communication can get each other communication content by a superimposed signal and its signal synchronization signal of two sides subtraction. The experimental results shows the proposed method only needs less hardware consumption in duplex mode of operation.