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An ultra-lightweight two-way authentication method for mobile RFID systems

A two-way authentication, lightweight technology, applied in the field of communication, can solve the problems of non-reusable, low efficiency, short service life, etc.

Active Publication Date: 2021-05-04
XIDIAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, the physical method has shortcomings such as short service life, low efficiency, and non-reusability. Based on the Hash function encryption mechanism, it is widely used because of the one-way and confidentiality of the Hash function.
However, existing security protocols cannot fully meet the security requirements of mobile RFID systems.
At the same time, due to the limited computing power and storage capacity of the tag, it is impossible to perform complex calculations and store a large amount of data on the tag, which will increase the cost of the tag while ensuring the security of the protocol

Method used

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  • An ultra-lightweight two-way authentication method for mobile RFID systems
  • An ultra-lightweight two-way authentication method for mobile RFID systems
  • An ultra-lightweight two-way authentication method for mobile RFID systems

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Experimental program
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Embodiment Construction

[0041] The technical solutions of the present invention will be further described below in conjunction with the implementation manners.

[0042] Step 1: The reader generates a random number r, then sends a Query request to the tag, and sends the random number to the tag.

[0043] Step 2: After receiving the request initiated by the reader, the tag first judges the value of the random number flag bit to determine whether the random number is legally updated. If flag=1, it means that the last random number update was successful, then t will be used as a normal random number and set flag to 0; if flag=0, it means that there was an exception in the last authentication, and the CRC() algorithm in the tag is used at this time Update the random number, that is, t=CRC(A), where A=IDS||t||r, and use it as the random number this time. After the random number update is completed, the flag is still set to 0. Then calculate M1=CRC(A ⊕KT⊕r⊕t), and send the message (M1, t) to the reader.

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Abstract

The invention relates to the technical field of communication, and more specifically relates to the issue of security authentication among tags, readers and back-end databases in a mobile RFID system. The implementation steps are: (1) the reader sends request information to the tag; (2) the reader sends the tag response request information and its own information to the database; (3) the database authenticates the reader and the tag; (4) the reader authenticates the database ; (5) Label authentication database. This protocol uses a circular check function and simple XOR and cascade operations to encrypt the message to be transmitted, realizes the anonymity of the tag and the two-way authentication of the system, and effectively reduces the calculation amount of the database and the tag. The tag random number is generated by the random number generation mechanism of the back-end database and then forwarded to the tag or self-renewed by using the cycle check function, thereby reducing the hardware cost of the tag. The present invention utilizes the dynamic ID and the circular check function mechanism to enable the system to resist various attacks.

Description

technical field [0001] The invention relates to the technical field of communication, and more specifically relates to the issue of security authentication among tags, readers and back-end databases in a mobile RFID system. Background technique [0002] Radio Frequency Identification (RFID) technology is a non-contact automatic identification technology. A complete RFID system is composed of three parts: reader, electronic tag and server. The basic working principle of RFID technology is: after the tag enters the magnetic field, it receives the radio frequency signal sent by the reader, and sends out the product information stored in the chip by virtue of the energy obtained by the induced current (passive tag or passive tag), or the tag actively Send a signal of a certain frequency (active tag or active tag), the reader reads and decodes the information, and sends it to the server for relevant data processing. Compared with traditional identification technology, RFID is a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06K17/00G06F21/44G06F21/60G06F21/62G06F21/64G06F16/23H04L1/00H04L9/08
CPCG06F21/445G06F21/602G06F21/6218G06F21/64G06K17/0029G06F16/2365H04L1/004H04L9/085H04L9/0869
Inventor 方建平彭勃
Owner XIDIAN UNIV
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