A security processing method for an RFID system applied to a door lock

Abstract

The invention discloses a safety processing method for an RFID system applied to door locks. A reader / writer randomly generates a broadcast signal. When a tag receives the broadcast signal, a first microprocessor determines the distance between the tag and the reader / writer through the broadcast signal. The instant communication frequency point for communication between the reader and the reader makes the corresponding communication frequency conversion to complete the communication, making it difficult to steal the communication data between the tag and the reader by using eavesdropping technology; the encryption and decryption determined by the broadcast signal method, combined with the instant messaging frequency point, a stable communication with double security functions is established between the reader-writer and the tag, so that the communication data can be transmitted reliably and safely; when the identity code pre-stored in the reader-writer and When the decrypted identity codes are consistent, the reader generates a handshake signal and sends it to the tag, so that the tag switches from the wake-up listening state to the dormant state, that is, the communication channel is closed, reducing the multiple transmissions of communication data.

Description

technical field [0001] The invention relates to an automatic identification technology, in particular to a security processing method of an RFID (Radio Frequency Identification, radio frequency identification) system applied to a door lock. Background technique [0002] Automatic identification technology traditionally includes barcode, optical symbol recognition, speech recognition, fingerprint recognition and other biological information measurement methods, IC (Integrated Circuit, integrated circuit) card, etc., each has its own advantages and disadvantages, and has been developed and applied in different ways. [0003] In recent years, one of the technically best solutions for automatic identification has been to store the data on a silicon chip. In daily life, IC cards (including telephone IC cards, bank cards, etc.) with contact rows are the most common structure of electronic data carriers. In many cases, such as for IC cards, the connection of its mechanical contact...

AI Technical Summary

Problems solved by technology

[0006] (2) Man-made signal interference makes the legitimate reader unable to read the data sent by the tag normally;

Images