Read-write control method and apparatus of ultrahigh frequency electronic tag, and read-write device

Abstract

The embodiment of the invention discloses a read-write control method and apparatus of an ultrahigh frequency electronic tag, and a read-write device. The method comprises the following steps: performing encryption operation on a random number according to a preset encryption algorithm to generate a random password; receiving a third password calculated by upper computer software based on the random number, and a fourth password calculated by an encryption module based on the random number; respectively judging whether a random password is consistent with the third password and the fourth password; and if the random password is inconsistent with the third password, and / or random password is inconsistent with the fourth password, feeding back an authentication failure signal to the upper computer software, and controlling the read-write device to enter a standby state. Through the above manner, the embodiment of the invention can prevent the data in the electronic tag from being rewritten by unauthorized software or an unauthorized device, thereby ensuring the security of the data.

Description

technical field [0001] The embodiment of the present invention relates to the technical field of radio frequency identification, in particular to a method, device and device for reading and writing of UHF electronic tags. Background technique [0002] Ultra-high frequency radio frequency identification (RFID) is a technology that uses microwave signals for wireless communication. It can identify specific targets and read and write related data through microwave signals without establishing mechanical or optical contact between the identification system and specific targets. Ultra-high frequency radio frequency identification technology has the characteristics of fast reading and writing speed, long recognition distance, and more electronic tags can be read and written. It has been more and more widely used in many fields such as railway safety, intelligent parking lot, and production line management. [0003] The RFID reading and writing system is composed of electronic tags...

AI Technical Summary

Problems solved by technology

[0003] The RFID reading and writing system is composed of electronic tags, reading and writing equipment and host computer software (i.e. RFID application software). And the upper computer software is based on the way of data encryption transmission to protect the security of tag data, but there are still some shortcomings, for example, the tag password is easy to leak, and there is no authentication mechanism for the read-write device. If the tag password of the electronic tag is leaked Then the attacker can use the same type of read-write device to change the data of the electronic tag according to this password

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