Radio frequency tag data coding method and radio frequency tag data coding system for vehicle identification

Abstract

The invention discloses a radio frequency tag data coding system and a radio frequency tag data coding method for vehicle identification. The system comprises a computer, an encryption/decryption and verification code calculation device, an RFID reading-writing device and an RFID tag. The computer divides an EPC region of the RFID tag into a data part and a verification code part and codes a license plate number; the encryption/decryption and verification code calculation device encrypts the coded license plate number data and calculates the verification code of the license plate number data; the computer concatenates the license plate number data and the verification code; the RFID reading-writing device writes the concatenation data into the EPC region; the encryption/decryption and verification code calculation device carries out decryption to obtain decryption data and calculates the verification code; and the computer compares the decrypted verification code with the verification code part of the EPC region and judges whether data in the EPC region is tampered. The defect that data encryption and verification code calculation cannot be carried out due to the fact that the license plate number is stored in the EPC region of the RFID tag in the prior art is overcome.

Description

technical field [0001] The present invention relates to a radio frequency tag data encoding method applied to vehicle identification, in particular to a method for encoding data stored in radio frequency identification tags in vehicle identification applications, encrypting the encoded data and calculating verification codes to prevent The means by which data can be learned or tampered with by unauthorized persons. Background technique [0002] RFID (Radio Frequency Identification, radio frequency identification) technology has the characteristics of fast, long-distance, multi-target, and non-line-of-sight reading items, and passive RFID tags do not require battery power and maintenance, so they are widely used in vehicle identification and other tracking The field of the item. Currently, the widely used UHF RFID tags are RFID tags that comply with the ISO / IEC 18000-6C standard. [0003] The main purpose of the RFID system of the ISO / IEC 18000-6C standard is to apply to si...

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Problems solved by technology

[0006] The purpose of the present invention is to provide a radio frequency tag data encoding method and system applied to vehicle identification, which is used to overcome the problem of directly storing the license plate number in the EPC area of ​​the RFID tag in the application of vehicle identification and unable to encrypt the data and calculate the verification code. defect

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