Security authentication method of radio-frequency identification system

Abstract

The invention discloses a security authentication method of a radio-frequency identification system, belonging to the field of communication technology. The radio-frequency identification system comprises a background database, a reader and a label; and an authentication process comprises five rounds of communication process, realizes bidirectional authentication between the label and the reader and ensures the legality of the label and the reader. In the authentication process, the label only needs to execute the operation of a Hash function once, thereby reducing the system cost; and the label ID also has a dynamic updating function so that the label is not easily tracked. In the invention, the problem that a legal label cannot be authenticated due to the asynchronous ID update is solved by storing a label oldID and a label newID in the background database.

Description

technical field [0001] The invention belongs to the technical field of communication, and relates to a safety authentication method of a radio frequency identification system based on a hash (hash) function. Background technique [0002] The application of radio frequency identification (RFID) technology is becoming more and more widespread, and it has shown strong practical value in the fields of manufacturing, retailing and logistics, but it is followed by various security and privacy issues of RFID. Mainly manifested in the following two aspects: [0003] (a) User information privacy and security. When the RFID reader communicates with the RFID tag, the communication content contains the personal privacy information of the tag user, which will cause the leakage of the user's private information when it is attacked by security. [0004] (b) User location privacy and security. The RFID reader can easily detect the activity location of the tag user through the RFID tag, s...

AI Technical Summary

Problems solved by technology

In the Hash lock protocol and the random Hash lock protocol, the ID is transmitted through an insecure channel in the form of plain text, so it is very vulnerable to counterfeit attacks and retransmission attacks, and attackers can easily track tags; the Hash chain protocol is A one-way authentication protocol, that is, it can only enable the reader to authenticate the identity of the tag, but the tag cannot verify the identity of the reader; in the Hash chain protocol and the distributed query-response protocol, the execution of an authentication protocol requires the tag to Two hash operations increase the cost of the system; there is no dynamic ID update mechanism in the Hash lock protocol, random Hash lock protocol, and distributed query-response protocol, making tags easy to track

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