Highly anonymous RFID authentication protocol based on Hash function and dynamic shared key

Abstract

The invention discloses an encryption method of information transmission in an RFID authentication process. A label can be in communication connection with a reader-writer, and the encryption method comprises the following steps: after the label receives an inquiry instruction of the reader-writer, generating a first random number, and performing xor operation on the first random number and a public key to obtain a first output; providing a label identifier, the first random number and a dynamic sequence value for a one-way Hash function as inputs so as to generate a second output; providing the second output, the public key, the first output and a reader-writer identifier for the one-way Hash function as inputs so as to generate a third output; providing the reader-writer identifier, the label identifier and the public key for the one-way Hash function so as to generate a filtering identifier; and sending a first message to the reader-writer by the label, wherein the first message comprises the second output, the third output, the filtering identifier and the dynamic sequence value. The invention further discloses a highly anonymous RFID authentication protocol based on a Hash function and a dynamic shared key.

Description

technical field [0001] Most of the existing lightweight RFID authentication protocols based on Hash function are easy to be traced after the intercepted message, which leaks the privacy of the label and does not really achieve the strong anonymity of the label. Based on a Hash function and a dynamic shared key mechanism, the invention proposes a lightweight RFID authentication protocol that truly satisfies the strong anonymity of tags. Background technique [0002] Radio Frequency Identification (RFID) is a non-contact automatic identification technology, which is recognized as one of the core technologies of the Internet of Things. The current RFID technology can identify multiple objects in parallel, even objects in a moving state can be accurately identified. This technology has been applied in various complex environments, such as logistics, libraries, and manufacturing industries. Radio frequency identification communicates and identifies objects through radio signals....

AI Technical Summary

Problems solved by technology

High-cost tags have strong computing and storage capabilities, but are not conducive to the wide-scale application of RFID systems

However, the computing and storage capabilities of low-cost tags are limited, and heavyweight encryption algorithms are not applicable, so there are more security issues.

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