Analysis and Optimization to an NFC Security Authentication Algorithm Based on Hash Functions

Currently, NFC security authentication solutions widely use third-party authentication platforms, but their high cost and power consumption are not conducive to popularize NFC technology. To solve this problem, this paper presents a security authentication algorithm entirely based on a Hash function. It is an independent and complete algorithm without the aid of third-party certification platform. The main research process is transplanting an authentication algorithm in RFID, and then applying it to the NFC field after a wide range of optimization and improvement. This paper first changes the initiating mechanism to reduce the system error rate and save the power consumption of initiating device. Then, it removes some key data to save the storage resources. This scheme doesn't reduce the level of security. At last, the improved algorithm is simulated by Java Socket to obtain a kind of wider adaptability among devices. Experimental results from the simulation show that, the method can maintain the safety performance, improve efficiency and save storage space. It can be competent for the application in the relevant field, such as micro-payment, access controlling, etc.