Radio frequency identification (RFID) bidirectional authentication method

A technology of two-way authentication and identity verification information, applied in the field of ultra-high frequency RFID intelligent terminal processing, can solve problems such as interference and collision, and achieve the effect of reducing congestion, ensuring the process, and reducing the number of times.

Inactive Publication Date: 2013-03-13
上海孚恩电子科技有限公司
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Problems solved by technology

However, in the case of multiple RFID smart terminals reading an

Method used

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  • Radio frequency identification (RFID) bidirectional authentication method

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Embodiment 1

[0007] Embodiment 1: see figure 1 , the RFID two-way authentication method includes a tag, a reader and a database, and its signal transmission method is: first, the reader sends a request command to the tag, and the reader sends a dynamic password R, ID, K to the reader after receiving the request command, and the reader The dynamic password and Hash are transmitted to the database, and the database will feed back the retrieved identity verification information and dynamic password R to the reader, and the reader will then transmit the data verification information and dynamic password R to the tag. When multiple electronic tags enter the radio frequency range of the reader at the same time, they will respond to the command of the reader and return their own ID information at the same time, and selectively sort the ID symbols of the same length through RFID bidirectional authentication, effectively It reduces the congestion of the queue, reduces the number of times the reader...

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Abstract

The invention discloses an RFID bidirectional authentication method. The method comprises tags, a reader and a database. A binary anti-collision search algorithm is improved on the basis that the algorithm is quantitatively analyzed in detail, and the RFID bidirectional authentication method and an anti-interference and anti-collision design scheme of the method are designed. When a plurality of electronic tags enter a radio-frequency range of the reader simultaneously, electronic tags respond to a command of the reader simultaneously and return identity (ID) information of electronic tags, ID signs of the same length are selectively sorted through RFID bidirectional authentication, the congestion of a queue is effectively reduced, and the number of times that the reader accesses electronic tags is reduced to achieve quick positioning and credible identification, so that the high anti-interference and anti-collision capability of an item can be achieved, and the read-write process is stable.

Description

technical field [0001] The invention relates to an ultra-high frequency RFID intelligent terminal processing technology, in particular to an RFID bidirectional authentication method. Background technique [0002] The RFID wireless smart handheld terminal is a radio frequency identification product based on RFID technology. The internal RFID reading and writing module uses radio frequency technology to read the information of the external radio frequency identification tag, or write the information into the electronic tag. The reading and writing method is mainly by using a computer and Network system for management and information transmission. However, in the case of multiple RFID smart terminals reading and writing, problems such as collision and interference may occur. Contents of the invention [0003] The purpose of the present invention is to provide an RFID two-way authentication method for problems such as collision and interference when multiple RFID intelligent ...

Claims

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Application Information

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IPC IPC(8): G06K7/00
Inventor 徐坚强刘习奎胡注娇
Owner 上海孚恩电子科技有限公司
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