A kind of authentication method of RFID system

Abstract

The invention discloses an authentication method for an RFID system, which includes: after an effective database receives an inquiry message sent by a requesting reader-writer, it uses a hash function to perform hash encryption on a character string including a time stamp and a first local time. According to the value of the time verification code sent by the requesting reader, it is judged whether the requesting reader has passed the preliminary authentication; if the value of the time verification code is different from the first local time, the authentication fails and the communication ends; otherwise , to determine that the requesting reader may be a valid reader; the valid database determines the first identifier of the requesting reader according to the timestamp and the first matching verification information sent by the requesting reader, and matches the requesting reader Authentication; if the valid database matches the requesting reader, then the requesting reader corresponding to the first identifier is a valid reader; otherwise, end the communication. The authentication method of the invention can effectively resist denial of service attacks caused by counterfeit readers.

Description

technical field [0001] The invention relates to the field of radio frequency identification (Radio Frequency Identification, RFID), in particular to an authentication method for an RFID system. Background technique [0002] In recent years, with the rapid development of the Internet of Things technology and the large-scale promotion of its application, the prospect of RFID technology is becoming more and more broad. At present, the RFID system has been deployed in different application scenarios, such as automatic payment, asset tracking, supply chain and inventory management, etc., and has become the most critical and widely used technology in the sensing layer of the Internet of Things. It has an important impact on the economic benefits of enterprises and the improvement of the level of social informatization. [0003] RFID technology is a non-contact automatic identification technology. It identifies specific targets through radio signals and can read and write related ...

AI Technical Summary

Problems solved by technology

Although the RFID authentication methods in the prior art can improve the security performance of the RFID system to a certain extent, they do not provide effective means of resisting denial-of-service attacks.

When an attacker uses a counterfeit reader to continuously send false authentication information to the background database, the background database will always be under heavy load, which can easily cause congestion, resulting in the failure of legitimate tags to be authenticated

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