Research On Lightweight Bidirectional Security Authentication Protocol Based On RFID

With the continuous application of electronic tags in various industries,the importance of tag identity security authentication is more prominent.This paper summarizes various problems faced by Radio Frequency Identification(RFID)system security authentication,and focuses on the existing lightweight RFID bidirectional security authentication protocol.This paper studies the tag power consumption,computation,storage and bidirectional from the two perspectives of security and lightweight,improves the lightweight LMAP++ bidirectional security authentication protocol,and solves the problem of tag desynchronization attack and location tracking.On this basis,a Lightweight Security Authentication Protocol LSAPP based on PRESENT algorithm is proposed to solve the problem of asynchronous key update.The specific work is as follows:(1)The security of RFID system authentication is studied.To solve the problem of tag location information leakage in lightweight LMAP++ protocol,an improved scheme based on random Numbers is proposed.At the same time,aiming at the problem of LMAP++ protocol desynchronization attack,the bidirectional authentication model of LMAP++ is modified to add a authentication step of confirmation signal to solve the problem of desynchronization attack.Finally,the improved LMAP++ protocol based on the proposed random number is proved to be able to resist both location-tracking attacks and synchronous attacks,ensuring security of bidirectional authentication between tags and readers.(2)The lightweight problem of RFID system authentication is studied.By referring to the improved lightweight PRESENT optimization algorithm and reducing the number of rounds of PRESENT encryption algorithm,the algorithm is made more portable and the execution cost is greatly reduced.At the same time,the S matrix and T matrix in the PRESENT algorithm are optimized to reduce the computational complexity and thus reduce the power consumption of the tag.In the process of tag authentication,the improved lightweight PRESENT algorithm can realize the lightweight authentication between tag and reader.Finally,aiming at the bidirectional security problem of RFID system authentication protocol,a new bidirectional authentication model based on PRESENT algorithm was designed based on the bidirectional security authentication model of lightweight LMAP++protocol,and the protocol under this model was named as LSAPP protocol.This model takes full account of the computing power and storage capacity of the tag,and ensures the bidirectional security of the protocol under the condition that the RFID system authenticationprotocol is lightweight.The security,power consumption and attack resistance of LSAPP protocol were analyzed by simulation.Verify the superiority of LSAPP protocol over LMAP++ and illustrate its practical value from four aspects of security,adaptability,power consumption and attack resistance through comparative analysis.